Toroidal Core Power Transformers
Last Updated: January 16, 2025 Reviewed by: Jon Lowy, consulting engineer
Description
Toroidal core power transformers are electrical devices that consist of copper wire wrapped around a cylindrical core. These transformers are designed to transfer electrical energy between circuits through electromagnetic induction. The toroidal shape of the core helps in confining the magnetic flux within the core, thereby reducing electromagnetic interference (EMI).
Working Principle
Toroidal core power transformers operate on the principle of electromagnetic induction. When an alternating current (AC) flows through the primary winding, it generates a magnetic field. This magnetic field induces a voltage in the secondary winding, which is proportional to the number of turns in the winding. The toroidal shape of the core ensures that the magnetic flux is confined within the core, minimizing leakage and improving efficiency. This design also allows for higher inductance with fewer turns per coil, making the transformer more efficient and compact.
Applications
Toroidal core power transformers are commonly used in applications where space is limited and electromagnetic interference needs to be minimized. Specific examples include:
- Audio Equipment: Used in high-fidelity audio systems to reduce noise and improve sound quality.
- Medical Devices: Employed in sensitive medical equipment where low electromagnetic interference is crucial.
- Telecommunications: Utilized in RF and signal processing equipment to maintain signal integrity.
- Industrial Control Systems: Applied in control systems that require precise voltage regulation and minimal interference.
Advantages over other Power Transformers
Toroidal core power transformers offer several advantages over traditional laminated core transformers:
- Reduced Electromagnetic Interference (EMI): The toroidal design confines the magnetic flux within the core, reducing EMI and making them ideal for sensitive electronic applications.
- Higher Efficiency: Due to the reduced leakage inductance and fewer turns per coil, toroidal transformers are generally more efficient.
- Compact Size: The design allows for a more compact and lightweight transformer, which is beneficial in applications with space constraints.
- Lower Audible Noise: The construction of toroidal transformers results in lower audible noise, making them suitable for audio and medical applications.
Limitations
Despite their advantages, toroidal core power transformers have some limitations:
- Manufacturing Complexity: The winding process is more complex and often requires specialized machinery, making them more expensive to produce.
- Limited High-Voltage Applications: They are generally not suitable for high-voltage power applications due to their small size and design constraints.
- Cost: The materials and manufacturing process can make toroidal transformers more expensive than traditional laminated core transformers.
Considerations
When considering toroidal core power transformers, several factors should be taken into account:
- Initial Costs: The initial cost of toroidal transformers can be higher due to the specialized materials and manufacturing processes required.
- Operating Expense: While the initial cost may be higher, the improved efficiency can result in lower operating expenses over time.
- Durability: The compact and robust design generally offers good durability, but the quality of materials used can significantly impact longevity.
- Accuracy: Toroidal transformers provide high accuracy in voltage regulation, which is beneficial for sensitive applications.
- Replacement and Maintenance Costs: Due to their specialized nature, replacement and maintenance can be more costly and may require specific expertise.
from Hammond Manufacturing Company Inc.
Features. Torodial transformer benefits: low profile. lightweight. cool running / high efficiency. due to the core shape - low stray magnetic flux leakage (low EMI). Dual 117/234 VAC primary, 50/60 Hz. operation. Note: Units are designed to have all windings engaged (either series or parallel... [See More]
- Construction: Toroidal Core
- Output Voltage: 110
- Transformer Type: Electronics; Power Transformer
- Power Rating (VA): 15
from Coilcraft, Inc.
Designed for active clamp forward topology. Operates at 200 kHz with 36 – 72 V input. Provides 0.229 mm clearance above the seating plane. AEC-Q200 qualified [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from Triad Magnetics
Primary: 100, 120, 220 or 240 VAC, 50/60 Hz. Secondary: Dual for parallel or series connection. Insulation Class: Class F, 155 ºC. Dielectric Isolation (Pri to Sec): 4 KV for 60 secs. Low leakage current and low stray fields [See More]
- Construction: Toroidal Core
- Input Voltage: 100 to 240
- Transformer Type: Isolation
- Output Voltage: 6
from DigiKey
PWR XFMR TOROIDAL 80VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Hammond Manufacturing Company Inc.
Features. Low profile, lightweight, cool running - due to high efficiency toroidal design. Dual 117/234 VAC primary, 50/60 Hz. operation. Units are designed to have all windings engaged. Center single hole mounting - units over 225VA include a potted center (see photos below) for extra mounting... [See More]
- Construction: Toroidal Core
- Output Voltage: 240
- Transformer Type: Electronics; Power Transformer
- Power Rating (VA): 15
from Coilcraft, Inc.
Coilcraft ’s 1812TRX Ethernet isolation transformer features a fully automated construction, not only reducing cost but also increasing reliability. Its compact surface mount package measures just 4.7 x 3.31 x 3.1 mm, significantly smaller than traditional hand wound toroidal transformers. The... [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from Triad Magnetics
Primary: 100, 120, 220 or 240 VAC, 50/60 Hz. Secondary: Dual for parallel or series connection. Insulation Class: Class F, 155 ºC. Dielectric Isolation (Pri to Sec): 4 KV for 60 secs. Low leakage current and low stray fields [See More]
- Construction: Toroidal Core
- Input Voltage: 100 to 240
- Transformer Type: Isolation
- Output Voltage: 50
from DigiKey
PWR XFMR TOROIDAL 5VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Texas Instruments LM5070 PoE Interface. IEEE 802.3af compliant for 3 W PoE applications. Industry standard EP7 surface mount package. Three different output current and voltages. Designed to operate in continuous mode at 250 kHz with input voltage of 36 – 72 Vdc [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from Triad Magnetics
Primary: 208 or 240 VAC, 50/60 Hz. Secondary: Dual for parallel or series connection. Insulation Class: Class F, 155 ºC. Dielectric Isolation (Pri to Sec): 4 KV for 60 secs. Low leakage current and low stray fields [See More]
- Construction: Toroidal Core
- Input Voltage: 208 to 240
- Transformer Type: Isolation
- Output Voltage: 120
from DigiKey
PWR XFMR TOROIDAL 3.2VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Texas Instruments LM5070 PoE Interface. IEEE 802.3af compliant for 7 W PoE applications. Industry standard EP10 surface mount package. Three different output current and voltages. Designed to operate in continuous mode at 250 kHz with input voltage of 36 – 72 Vdc [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from Triad Magnetics
Primary: 100, 120, 220 or 240 VAC, 50/60 Hz. Secondary: Dual for parallel or series connection. Insulation Class: Class F, 155 ºC. Dielectric Isolation (Pri to Sec): 4 KV for 60 secs. Low leakage current and low stray fields [See More]
- Construction: Toroidal Core
- Input Voltage: 100 to 240
- Transformer Type: Isolation
- Output Voltage: 6
from DigiKey
PWR XFMR TOROIDAL 1.6VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
For flyback regulator applications using the Texas Instruments LM5000 Regulator. Recommended and approved by Texas Instruments [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from Triad Magnetics
These medical grade isolation boxes are built using a toroidal transformer construction that inherently helps reduce stray fields, increases efficiency and minimizes size compared to traditional EI transformers. Built with Class F (155 º) insulation system. The enclosure is made of steel and... [See More]
- Construction: Toroidal Core
- Input Voltage: 240
- Transformer Type: Isolation
- Power Rating (VA): 250
from DigiKey
PWR XFMR TOROIDAL 50VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Can be used with Linear Technology LT1725 Flyback Controller. Suitable for use in PoE applications. Ideal for use in telecommunications isolated converters and isolated power supplies. Six 1:1 windings [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from Triad Magnetics
These medical grade isolation boxes are built using a toroidal transformer construction that inherently helps reduce stray fields, increases efficiency and minimizes size compared to traditional EI transformers. Built with Class F (155 º) insulation system. The enclosure is made of steel and... [See More]
- Construction: Toroidal Core
- Input Voltage: 120
- Transformer Type: Isolation
- Power Rating (VA): 2000
from DigiKey
PWR XFMR TOROIDAL 25VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Planar Transformer optimized for PoE DC/DC Powered Device (PD) resonant forward converters. Designed to meet IEEE802.3bt standard. Perfect solution for high power PoE applications up to 100 W. Optimized for 200 kHz to 350 kHz with 42.5 – 57 V input. 1500 Vrms, 1 minute isolation (hipot)... [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from Triad Magnetics
Triad chassis mount World Series Toroidal transformers are efficient, compact, cool running and cost effective. They are approved to UL 5085-1 and CE IE C 61558-1 and 615 58-2-6, and are constructed with a Class B (130C) rated insulation system. These toroidal transformers have minimal stray fields... [See More]
- Construction: Toroidal Core
- Input Voltage: 115 to 230
- Mounting: Chassis
- Output Voltage: 50
from DigiKey
PWR XFMR TOROIDAL 1.6VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Optimized for use with On Semiconductor NCP1030 power converter. Interleaved primary and secondary windings for low leakage inductance. Ideal for 48 V telecom power supply and Power Over Ethernet (PoE) applications [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from DigiKey
PWR XFMR TOROIDAL 10VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Specially developed for use with the Texas Instruments UCC3580 PWM Controllers. Low profile, high efficiency planar transformer. Planar output choke inductor [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from DigiKey
PWR XFMR TOROIDAL 7VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for TI LM5020 PWM Controller. Can be used in PoE applications. 1 MHz operating frequency. Low profile, surface mount [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from DigiKey
PWR XFMR TOROIDAL 7VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Maxim MAX5941B PoE Interface/PWM Controller. IEEE 802.3af compliant PoE forward converter applications. Low profile, surface mount transformer. 275 kHz switching frequency at a 50% duty cycle [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from DigiKey
PWR XFMR TOROIDAL 10VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for the TI LM5070 PD Interface in 13 W applications. Operates at frequencies up to 1 MHz. RoHS-compliant 260 °C compatible. Tin-silver-copper over tin over nickel over phos bronze terminations [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 85
from DigiKey
PWR XFMR TOROIDAL 5VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Linear LT1725 Isolated Flyback Controller. Can be used in isolated and non-isolated designs and in PoE applications. Interleaved secondary windings. RoHS-compliant. 260 °C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: 40 to 125
from DigiKey
PWR XFMR TOROIDAL 35VA TH [See More]
- Construction: Toroidal Core
- Mounting: Chip Transformer
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Maxim MAX5941A PoE Interface/PWM Controller. Interleaved primary and secondary windings. RoHS-compliant. 260 °C compatible. Tin-silver over tin over nickel over phos bronze terminations [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: 40 to 125
from DigiKey
PWR XFMR TOROIDAL 15VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for Maxim MAX5941A PoE Interface/PWM Controller [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 35VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for TI TPS23750 PoE PD controller (PMP929 reference design). Isolated, synchronous flyback transformers for IEEE 802.3af PoE applications [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 25VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for TI TPS23750 PoE PD controller (PMP717 reference design). Designed for discontinuous mode in isolated, non-synchronous power supplies. [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 3.2VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Developed for use with the Maxim MAX17497A/B AC-DC and DC-DC Peak-Current-Mode Converters for wide input-voltage nonisolated power supplies to supply multiple output rails for smart meters, industrial control and similar applications. Meets functional insulation class for use in nonisolated... [See More]
- Construction: Toroidal Core; Ferrite
- Operating Temperature: -40 to 85
- Transformer Type: Isolation
- Standards / Compliance: RoHS
from DigiKey
PWR XFMR TOROIDAL 50VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Senses current up to 20 Amps. Designed for up to 1 MHz and above. Eight different turns ratios to meet variety of requirements. Two pin-out configurations for different applications. AEC-Q200 Grade 1 ( −40 °C to +125 °C). Two samples of each value are available in Coilcraft... [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 3000VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Sensed current up to 28 Amps. Designed for use up to 1 MHz and above. Very low primary resistance. AEC-Q200 Grade 1 ( −40 °C to +125 °C). UL Class 180 (H) insulating materials, UL 1446 Class F (155 °C) Insulation System (UL File E83628 CC-5D marking). Bobbin plastic UL 94-V0,... [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 50VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Sensed current up to 47 Amps. Designed for use up to 1 MHz and above. Very low primary DC resistance. AEC-Q200 Grade 1 ( −40 °C to +125 °C). Need parts for space, military or other critical applications?. See Coilcraft ST629TCB Series [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 100VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
High isolation voltage CST2010 current sense transformer. Sensed current up to 40 A. Designed for use up to 1 MHz and above. 2100 Vrms, one minute isolation (hipot) between windings. AEC-Q200 qualified. Designed to comply with IEC61558-1, IEC62369-1, and IEC60664-1 for providing Reinforced or Basic... [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 200VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Sensed current up to 40 Amps. Designed for use between 400 Hz to 1 MHz and above. Very low primary resistance. AEC-Q200 Grade 1 ( −40 °C to +125 °C). Meets Reinforced Insulation per UL 60950-1. Need parts for space, military or other critical applications?. See Coilcraft ST630TCB... [See More]
- Construction: Toroidal Core; Ferrite
- Operating Temperature: -40 to 125
- Transformer Type: Isolation
- Standards / Compliance: RoHS; MIL-STD
from DigiKey
PWR XFMR TOROIDAL 300VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Designed for use up to 1 MHz and above. Sensed current is 80 A and higher. Very low primary resistance. 5000 Vrms, one minute isolation (hipot) between windings. Designed to meet reinforced insulation, at least 8 mm creepage/clearance. AEC-Q200 qualified [See More]
- Construction: Toroidal Core; Ferrite
- Cooling Method: Air
- Transformer Type: Isolation
- Operating Temperature: -40 to 125
from DigiKey
PWR XFMR TOROIDAL 350VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Coilcraft, Inc.
Senses current up to 7 Amps. Designed for use between 11 kHz to 1 MHz and above. 9 turns ratios to meet variety of requirements. AEC-Q200 Grade 1 ( −40 °C to +125 °C). Need parts for space, military or other critical applications?. See Coilcraft AE475TCB Series [See More]
- Construction: Toroidal Core; Ferrite
- Operating Temperature: -40 to 125
- Transformer Type: Isolation
- Standards / Compliance: RoHS; MIL-STD
from DigiKey
PWR XFMR TOROIDAL 400VA CHAS MT [See More]
- Construction: Toroidal Core
- Mounting: Chassis
- Transformer Type: Power Transformer
- Single Phase Configuration: Dual
from Avel Lindberg, Inc.
Horizontal Fixing Option. Vertical Fixing Option. Toroidal Construction. Thermally Protected Primary. Fully Encapsulated to UL 94VO. Dual Secondaries. Low Magnetic Field. Low Surface Temperature. Low Induced Noise (Audible). Double Insulated Flexible PVC leads. Available PCB or Flying Lead, Primary... [See More]
- Construction: Toroidal Core
- Mounting: PCB/SMD
- Transformer Type: Encapsulated Transformers; Power Transformer
- Primary Frequency: 50 / 60 Hz
from Toroid Corp. of Maryland
Optional enclosure with or without cord, plug and receptacle [See More]
- Construction: Toroidal Core
- Mounting: Chassis; Dish/Disk
- Transformer Type: Autotransformer
- Primary Frequency: 60 Hz
from Airlink Transformers
EW15KJ1208068 - 110V Portable Tool Transformers. 15kva 400v 3Phase to 9 x110v Site transformer. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We can custom build to... [See More]
- Construction: Toroidal Core
- Input Voltage: 400
- Transformer Type: Isolation
- Output Voltage: 110
from Amgis Toroidal Power Products, LLC
There are many inherent advantages of the toroidal (ring, donut-shaped core) transformer, relative to other core configurations. Advantages of Ring Toroidals: Magnetic circuit is nearly ideal. Lower stray magnetic field. Less volume and weight. Less audible hum. Higher efficiency (perfect for stray... [See More]
- Construction: Toroidal Core
- Output Voltage: 12 to 120
- Mounting: Chassis (optional feature); Dish/Disk (optional feature)
- Secondary Current Rating: 0.6600 to 27.27
from Powertronix Inc.
Auto Transformers are single winding toroidal transformers for voltage step up or step down, when there is no requirement for electrical isolation. Auto Transformers offer a significant size and weight reduction as well as lower cost. APPLICATIONS. Industrial Automation. Electrical Equipment [See More]
- Construction: Toroidal Core
- Mounting: Center Potted with Thru Hole, Flange, Excapsulated, Custom Mounting Bracket
- Transformer Type: Autotransformer; Single Phase Transformer
- Input Voltage: 120
from Data Device Corporation (DDC)
Beta has been manufacturing transformers for nearly 20 years, developing an expertise unmatched for producing low-to medium-power transformers. Whether you require a transformer for a medium-power, switching power supply or a simple reference transformer for a synchro/resolver circuit, Beta can... [See More]
- Construction: Toroidal Core
- Mounting: Surface Mount
- Transformer Type: Power Transformer
- Primary Frequency: 400
from Standex-Meder Electronics
FPT Series Power Toroidal Transformers offers 44 standard models from 15VA to 500 VA. Dual 115/230V 50/60Hz rated primary and dual secondaries for series or parallel selection with class B 130 °C insulation system utilized. Low radiated magnetic field. CSA and UL recognized components LR16597,... [See More]
- Construction: Toroidal Core
- Input Voltage: 115 to 230
- Primary Frequency: 50 / 60 Hz
- Power Rating (VA): 15 to 500
from Avel Lindberg, Inc.
AVEL's Y23 Range offers an even broader selection of ready-made toroidal power transformers, spanning 15 to 1000VA. The Range has a polyester tape finish with hardware supplied with dish mounting, nut bolt, washer and two compression pads. This style of finish has proven to be Avel's most popular... [See More]
- Construction: Toroidal Core
- Mounting: Dish/Disk
- Transformer Type: Power Transformer
- Primary Frequency: 50 / 60 Hz
from Airlink Transformers
RX033 - 110V Portable Tool Transformers. 3.3kva 230v to 2x110v tool transformer. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We can custom build to your... [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 110
from Amgis Toroidal Power Products, LLC
Three phase toroidal power transformers are three separate single-phase units. This allows for separation of the coils as individual units, giving 3-phase toroidal electrical transformers superior flexibility when compared to traditional E-I transformers. E-I transformers are stacked side by side... [See More]
- Construction: Toroidal Core
- Output Type: AC
- Transformer Type: Power Transformer
from Powertronix Inc.
High Voltage Toroidal Transformers are designed light weight, small in size, high efficient and high reliability for rough environmental conditions. High Voltage Transformers also provide electrical isolation, power distribution and control and instrumentation applications. APPLICATIONS. Popular for... [See More]
- Construction: Toroidal Core
- Mounting: Flange Mount, Custom
- Transformer Type: Isolation; Single Phase Transformer
- Power Rating (VA): 1000 to 45000
from Data Device Corporation (DDC)
Meets MIL-T-27 grade 6, 115V input, 3V output [See More]
- Construction: Toroidal Core
- Mounting: Frame/PCB Bobbin
- Transformer Type: Reference Transformer
- Primary Frequency: 47-66 Hz
from Airlink Transformers
RX05 - 110V Portable Tool Transformers. 5kva 230v to 3x110v tool transformer Made in China. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We can custom build to... [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 110
from Amgis Toroidal Power Products, LLC
Amgis offers a line of 50/60Hz low profile miniature toroidal transformers. These small transformers are primarily intended to use in 115V or 230V @ 50/60Hz. They have UL class A insulation, UL recognized to UL5085-1 and UL5085-2 under UL file E310463, C-UL recognized to CSA C22.2 no 66. UL File... [See More]
- Construction: Toroidal Core
- Primary Frequency: 50 / 60 Hz
- Mounting: Chassis (optional feature); Dish/Disk (optional feature)
- Output Voltage: 7 to 22
from Powertronix Inc.
Intermittent Duty Cycle Transformers are small size, low weight, single bolt mounted and well optimized. Smaller transformers are used when the load is intermittent and the duty cycle is shorter than thermal time constant of the transformer. APPLICATIONS. Automation. Process Automation. Medical... [See More]
- Construction: Toroidal Core
- Mounting: Center Potted with Thru Hole, Flange,Metal Washer, Encapsulated, Custom Defined
- Transformer Type: Medical Transformer; Three Phase Transformers; Automation, Process Automation, Dental Applications
- Power Rating (VA): 1000 to 45000
from Data Device Corporation (DDC)
These transformers are designed and built to meet the ruggedized requirements of MIL-PRF-27 for use in high reliability Aerospace, Military, and Extreme Industrial control systems. Typical applications are Motor control, Radar antenna positioning, Machine Tool control, Robotics, and Process control,... [See More]
- Construction: Toroidal Core
- Mounting: PCB/SMD
- Transformer Type: Reference Transformer
- Primary Frequency: 400
from Airlink Transformers
ST0750 - 110V Portable Tool Transformers. 750VA 230v to 110v tool transformer. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We can custom build to your... [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 110
from Powertronix Inc.
Isolation Transformers are distinguished by their small size, light weight and high efficiency. They are built to form, fit and function and can be provided with one or more primary windings and one or more secondary windings. APPLICATIONS. Industrial Automation. Electrical Equipment. Transformer... [See More]
- Construction: Toroidal Core
- Mounting: Center Potted with Thru Hole, Flange, Excapsulated, Custom Mounting Bracket
- Transformer Type: Isolation; Single Phase Transformer
- Power Rating (VA): 18 to 15000
from Airlink Transformers
ST6000 - 110V Portable Tool Transformers. 5000VA 230v to 2 x 110v 32Amp outlets tool transformer. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We can custom build... [See More]
- Construction: Toroidal Core
- Output Voltage: 110
- Input Voltage: 230
- Secondary Current Rating: 32
from Powertronix Inc.
Low profile transformers are design for slim line equipment and low profile rack systems. APPLICATIONS. Medical equipment. Power supply for computer server. Miniature video and/or audio equipment. Auto Industries (Electric Car) [See More]
- Construction: Toroidal Core
- Mounting: Center Potted with Thru Hole, Vertically or Hoerizontal, Flange, Rack, Panel Mounted
- Transformer Type: Medical Transformer; Single Phase Transformer
- Power Rating (VA): 100 to 1000
from Airlink Transformers
TT1668 - 110V Portable Tool Transformers. 3000VA 230v to 1 x230v & 1 x 115v 16Amp 1 x 32A outlets tool transformer. 230v to 110v Tool transformers. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We... [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 230
from Powertronix Inc.
Medical Grade Transformer provides. Clean AC power with noise suppression. Protection from AC transients. Optimize power solution for medical equipment. APPLICATIONS. Medical Grade Transformer provide 1:1, step up or step down for medical equipment, carts, imaging, and laser. [See More]
- Construction: Toroidal Core
- Mounting: Flange, Potted in a Cradle, Center Potted with Thru Hole, Rack, Panel Mounted
- Transformer Type: Medical Transformer; Single Phase Transformer
- Power Rating (VA): 100 to 15000
from Airlink Transformers
SU0750 - 230V Portable Tool Transformers. 750VA 110v to 230v Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS Compliant. We... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 3.26
from Airlink Transformers
SU0755 - 230V Portable Tool Transformers. 750VA 110v to 230v Schuko Outlet Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 3.26
from Airlink Transformers
SU1516 - 230V Portable Tool Transformers. 1500VA 110v to 230v with 2 x 16A blue sockets Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 6.52
from Airlink Transformers
SU1555 - 230V Portable Tool Transformers. 1500VA 110v to 230v Schuko Outlet Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558 CE & RoHS... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 6.52
from Airlink Transformers
SU3316 - 230V Portable Tool Transformers. 3000VA 110v to 230v with 2 x 16A Blue socket Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with EN61558... [See More]
- Construction: Toroidal Core
- Input Voltage: 110
- Transformer Type: Isolation
- Output Voltage: 230
from Airlink Transformers
SU3667 - 230V Portable Tool Transformers. 3000VA 110v to 230v with 2 x 16A Schuko sockets Stepup transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in accordance with... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 16
from Airlink Transformers
SU4000 - 230V Portable Tool Transformers. 4000VA 110v to 230v stepdown transformer with 2 x 16A Blue socket transformer. Converts 110v to 230v. To operate 230v tools on a building site. Manufactured to BSEN61558. Housed in reinforced cases providing security and durability. Manufactured in... [See More]
- Construction: Toroidal Core
- Output Voltage: 230
- Input Voltage: 110
- Secondary Current Rating: 16
from Airlink Transformers
3PAD0031 - 3P Isolating Delta Delta. 500VA 3P 480-240v Hardwired. Three Phase Isolating transformers. Three Phase, Non Isolating, Auto transformers. Autowound transformers have the advantage of being smaller and cheaper than double wound isolating type. Range from 1kva to 40kva. Step up , Step down... [See More]
- Construction: Toroidal Core
- Three Phase Configuration: Delta/Delta
- Transformer Type: Isolation; Three Phase Transformers
- Input Voltage: 480
from Airlink Transformers
3PHD01010 - 3P Isolating Delta Delta. 1kva 3P Delta Delta 415v to 480v Hardwired. Three Phase Isolating transformers. Three Phase, Non Isolating, Auto transformers. Autowound transformers have the advantage of being smaller and cheaper than double wound isolating type. Range from 1kva to 40kva. Step... [See More]
- Construction: Toroidal Core
- Three Phase Configuration: Delta/Delta
- Transformer Type: Isolation; Three Phase Transformers
- Input Voltage: 415
from Airlink Transformers
3PAS0010 - 3P+N Auto Star Star. 1000VA 3P 415-230v Hardwired. Three Phase Autowound transformer. Three Phase plus Neutral. House in wall floor mounting steel case. 1kva to 20kva. Multitude of primary & Secondary voltages. Maybe used to either Step up or Step down. Star Star connection. Manufactured... [See More]
- Construction: Toroidal Core
- Input Voltage: 415
- Transformer Type: Three Phase Transformers
- Output Voltage: 230
from Airlink Transformers
3PAS0212 - 3P+N Auto Star Star. 20kVA 3P+N 380-230v Hardwired. Three Phase Autowound transformer. Three Phase plus Neutral. House in wall floor mounting steel case. 1kva to 20kva. Multitude of primary & Secondary voltages. Maybe used to either Step up or Step down. Star Star connection. Manufactured... [See More]
- Construction: Toroidal Core
- Input Voltage: 380
- Transformer Type: Three Phase Transformers
- Output Voltage: 230
from Airlink Transformers
AL0052 - 3P+N Isolating Delta Star. 15kVA 3P+N 440V to 440/254v Wired in Delta Star configuration 60Hz. Three Phase Double insulated Isolating safety transformer. Three Phase plus Neutral. House in wall floor mounting steel case. 1kva to 20kva. Multitude of primary & Secondary voltages. Step up ,... [See More]
- Construction: Toroidal Core
- Input Voltage: 440
- Transformer Type: Isolation; Three Phase Transformers
- Output Voltage: 440
from Airlink Transformers
AT0030 - Autowound Transformers. 30VA 0-115-230v. - Single hole fixing through centre. - Terminal Blocks. - Suitable for American machinery or appliances. - Stepup or Stepdown. - Multitude of voltage 100 110 120 230 415v. - British built. - Conforms to BSEN61555-2-13. Open style with leads. [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Mounting: Chassis
- Output Voltage: 115
from Airlink Transformers
AT0186 - Autowound Transformers. 200VA 0-120-220v. - Single hole fixing through centre. - Terminal Blocks. - Suitable for American machinery or appliances. - Stepup or Stepdown. - Multitude of voltage 100 110 120 230 415v. - British built. - Conforms to BSEN61555-2-13. Open style with leads. [See More]
- Construction: Toroidal Core
- Input Voltage: 220
- Mounting: Chassis
- Output Voltage: 120
from Airlink Transformers
AT1500 - Autowound Transformers. 1500VA 0-115-230v. - Single hole fixing through centre. - Terminal Blocks. - Suitable for American machinery or appliances. - Stepup or Stepdown. - Multitude of voltage 100 110 120 230 415v. - British built. - Conforms to BSEN61555-2-13. Open style with leads. [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Mounting: Chassis
- Output Voltage: 115
from Airlink Transformers
BT10230 - Boating Transformers. 10Kva 230v to 230v Isolating transformer for Boats to prevent Galvanic corrosion. Prevents Galvanic Corrosion. Transformer for installation on boats to Isolate the vessel ground from the actual ground (ie the earth) in order to prevent galvanic corrosion. 230V input. [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 230
from Airlink Transformers
BT1616 - Boating Transformers. 1600va 115v to 230v Isolating transformer for Boats to prevent Galvanic corrosion. Prevents Galvanic Corrosion. Transformer for installation on boats to Isolate the vessel ground from the actual ground (ie the earth) in order to prevent galvanic corrosion. 230V input. [See More]
- Construction: Toroidal Core
- Input Voltage: 115
- Transformer Type: Isolation
- Output Voltage: 230
from Airlink Transformers
BT3121 - Boating Transformers. 3600va 230v to 120v Isolating transformer for Boats to prevent Galvanic corrosion. Prevents Galvanic Corrosion. Transformer for installation on boats to Isolate the vessel ground from the actual ground (ie the earth) in order to prevent galvanic corrosion. 230V input. [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 120
from Airlink Transformers
BT3250 - Boating Transformers. 3600va 230v to 120v Isolating transformer for Boats to prevent Galvanic corrosion. Prevents Galvanic Corrosion. Transformer for installation on boats to Isolate the vessel ground from the actual ground (ie the earth) in order to prevent galvanic corrosion. 230V input. [See More]
- Construction: Toroidal Core
- Input Voltage: 230
- Transformer Type: Isolation
- Output Voltage: 120