UL Signal Transformers
Description
UL Signal Transformers are specialized devices designed to transfer electrical signals from one circuit to another. They can modify the amplitude of the signal, either increasing or decreasing it, or provide isolation between circuits to prevent signal interference and current leakage.
Working Principle
Signal transformers operate based on the principle of electromagnetic induction. They consist of primary and secondary coils wound around a magnetic core. When an alternating current flows through the primary coil, it generates a magnetic field that induces a voltage in the secondary coil. This process allows the transformer to transfer energy or information between circuits without a direct electrical connection, ensuring safety and reducing noise. The turns ratio between the coils determines the voltage transformation, making these transformers useful for impedance matching and signal isolation.
Applications
Signal transformers are used in various applications, including:
- Audio Applications: Audio transformers are employed for voice and data transmission, operating on frequencies between 300 Hz and 20 kHz. They are crucial for signal isolation and impedance matching in audio systems.
- Telecommunications: Telecom transformers provide signal isolation in telecommunication systems, which require high bandwidth and fast switching capabilities.
- Radio Frequency (RF) Applications: RF transformers are used for impedance matching in radio frequency and microwave spectrum applications, ensuring efficient signal transmission.
Advantages over other Signal Transformers
UL Signal Transformers offer several advantages, such as:
- Broadband Operation: Unlike passive LC circuits, which operate over a narrow bandwidth, signal transformers can function effectively across a wide range of frequencies.
- Impedance Transformation: They are highly effective at transforming impedances, making them suitable for various electronic applications.
- Isolation: They provide excellent isolation between circuits, reducing the risk of signal interference and current leakage.
Limitations
Signal transformers have specific limitations, including:
- Inability to Handle DC Signals: Due to their reliance on electromagnetic induction, signal transformers cannot process static or direct current (DC) signals.
- Core Saturation: If the core material reaches saturation, it can lead to distortion and reduced efficiency.
- Leakage Inductance: This can result in energy losses and decreased performance, particularly at high frequencies.
Considerations
When selecting and using UL Signal Transformers, consider the following:
- Initial Costs: The cost of signal transformers can vary based on their specifications and applications. It's essential to balance cost with performance requirements.
- Operating Expense: While generally low, operating expenses can increase if transformers are not properly maintained or if they operate near their limits.
- Durability and Maintenance: Regular maintenance is crucial to ensure long-term reliability. Consider the environment in which the transformer will operate to prevent issues like overheating.
- Accuracy: Ensure that the transformer meets the required accuracy for your application, particularly in sensitive measurement systems.
- Replacement and Maintenance Costs: Factor in potential costs for replacement parts and maintenance, especially if the transformer is used in critical applications where downtime is costly.
from DigiKey
600 Impedance Primary Ohms 287 Impedance Secondary Ohms 1:1 Audio Transformer 200Hz ~ 4kHz Surface Mount [See More]
- Standards / Compliance: UL
- Operating Frequency: 200 to 4000
- Other Transformer Types / Applications: Audio
- Operating Temperature: -20 to 85
from Triad Magnetics
Triad gate drive transformers are used universally in all high frequency switching topologies to isolate the control circuitry from the line-connected switches. The windings are interleaved for the lowest possible practical leakage inductance. Turn ratios of 1:1 and 1:1.5 optimize coupling and... [See More]
- Standards / Compliance: UL; UL
- Operating Frequency: 200000
- Other Transformer Types / Applications: Switch Mode Transformers
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1.033 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600/600 Impedance Secondary Ohms 1:0.736 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1 Audio Transformer 660Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 660 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1.04 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1.04 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1 Audio Transformer 660Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 660 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 346 Impedance Secondary Ohms 1:1 Audio Transformer 300Hz ~ 3.5kHz Surface Mount [See More]
- Standards / Compliance: CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Power Rating (Watts): 0.0100
from DigiKey
600 Impedance Primary Ohms 346 Impedance Secondary Ohms 1:1 Audio Transformer 300Hz ~ 3.5kHz Surface Mount [See More]
- Standards / Compliance: CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Power Rating (Watts): 0.0100
from DigiKey
600 Impedance Primary Ohms 470 Impedance Secondary Ohms 1:1 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1.06 Audio Transformer 300Hz ~ 3.5kHz Surface Mount [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from DigiKey
600 Impedance Primary Ohms 600 Impedance Secondary Ohms 1:1 Audio Transformer 300Hz ~ 3.5kHz Through Hole [See More]
- Standards / Compliance: RoHS; CSA; UL
- Operating Frequency: 300 to 3500
- Other Transformer Types / Applications: Audio
- Mounting: Chip Transformer
from Datatronics™
Feature. Designed for use of Conexant Smart HSF FFI Chipset. Approved to UL1950 and BABT EN60950. SMT package. Small size. [See More]
- Standards / Compliance: RoHS; UL
- Mounting: PCB/SMD
- Other Transformer Types / Applications: Telecom
- Package Type: Surface Mount
from Toroid Corp. of Maryland
Optional NEMA enclosure with or without fuse, receptacle, line cord, plug [See More]
- Standards / Compliance: CSA; IEC; UL; TUV
- Center Tap Options: Secondary Side
- Other Transformer Types / Applications: Isolation
- Mounting: Chassis (optional feature); Dish/Disk (optional feature)
from Automation24, Inc.
Single phase low voltage distribution transformer T253008S from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120, 240 V AC with a power rating of 0.5 kVA. The dry type transformer T253008S also provides excellent ingress protection with it's NEMA 3R enclosure for... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from NSI Industries LLC
HEAVY DUTY TYPE. 2.5 INCH L X 2.187 INCH W X 3.25 INCH H SIZE. 60 HZ FREQUENCY RATING. UL, CSA APPROVAL. SCREW MOUNTING. 50 VA POWER RATING. 120/208/240 VAC PRIMARY VOLTAGE. 24 VAC SECONDARY VOLTAGE. 1 TAP(S) [See More]
- Standards / Compliance: CSA; UL
- Mounting: Chassis
- Operating Frequency: 60
from Premier Magnetics, Inc.
Designed for 10/100MB/s Transmission Over UTP-5 Cable, IEEE 802.3u & ANSI X3.236-1995. Maintains > 350uHY Primary OCL with an 8mA bias over the full temp range of 0 to +70 O C. Supports all leading Fast Ethernet Chip Sets that require a 1:1 Transmit & Receive Turns Ratio. Provides the... [See More]
- Standards / Compliance: UL
- Center Tap Options: Both Sides
- Other Transformer Types / Applications: Telecom; Isolation
- Operating Temperature: 0 to 70
from Schaffner EMC Inc.
Galvanic separation of drive and power circuit. Voltage resistance up to 8 kV. Ignition current up to 3 A. Turns ratio up to 3:1. Frequency : ≤ 40000 Hz. Ignition currents : 0.1 to 3 A. Operating frequency : 0 to 40000 Hz. Rise time : 0.3 to 2.3 µs [See More]
- Standards / Compliance: RoHS; UL
- Other Transformer Types / Applications: Electronics
- Winding Turns: Step-Down Transformer; One to One
- Operating Frequency: 40000 to 500000
from Tamura Corporation of America
• Approved to UL1950 3rd Edition. • Approved to UL60950 & EN60950. • Hi-Pot 1500Vrms Pri:Sec [See More]
- Standards / Compliance: UL
- Center Tap Options: None
- Other Transformer Types / Applications: Telecom
- Operating Frequency: 200 to 4000
from Standex-Meder Electronics
TAP Series Telecomm Transformers are audio matching telecommunications line frequency magnetics designed for PC board (PCB) mount and feature an economical open P.C. frame mounting with bifilar winding for capacitive and resistive balance. Frequency response 200Hz to 15KHz and insertion loss less... [See More]
- Standards / Compliance: CSA; UL
- Operating Frequency: 200 to 15000
- Other Transformer Types / Applications: Audio; Telecom
- Mounting: PCB/SMD
from Datatronics™
Feature. Designed for Conexant SMART HCF FFI Chipset. UL1950 / EN60950 and BABT approved. SMT package. Small size [See More]
- Standards / Compliance: RoHS; UL
- Mounting: PCB/SMD
- Other Transformer Types / Applications: Telecom
- Package Type: Surface Mount
from Automation24, Inc.
Single phase low voltage distribution transformer T253010S from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120, 240 V AC with a power rating of 1 kVA. The dry type transformer T253010S also provides excellent ingress protection with it's NEMA 3R enclosure for both... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from Premier Magnetics, Inc.
— Designed for Use with Power Integrations, Inc. TinySwitch Series Off-Line Switcher Controllers —. Designed to meet a Universal Input of 85Vac to 265Vac, 47Hz to 440Hz. Up to 6000Vrms of Isolatio [See More]
- Standards / Compliance: CSA; IEC; UL
- Other Transformer Types / Applications: Isolation
- Winding Turns: One to One
- Center Tap Options: None
from Tamura Corporation of America
• Highest Density Package Available. • Approved to UL1950 3rd Edition. • Approved to UL60950 & EN60950. • Surface Mount. • Vacuum Encapsulated. • Pri:Sec Hi-Pot=1500Vrms and Higher. • Surge Voltage [See More]
- Standards / Compliance: RoHS; UL
- Center Tap Options: None
- Other Transformer Types / Applications: Telecom
- Operating Frequency: 200 to 4000
from Datatronics™
Feature. Subminature in SMT. 7.1mm Seated Height. Vacuum Encapsulated. Tested at 4600VRMS. UL60950-1 Listed. BS415 approval for SM-LP5001**. Weight about 2 grams [See More]
- Standards / Compliance: RoHS; UL
- Operating Temperature: -20 to 85
- Other Transformer Types / Applications: Telecom
- Mounting: PCB/SMD
from Automation24, Inc.
Single phase low voltage distribution transformer T253012S from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120, 240 V AC with a power rating of 2 kVA. The dry type transformer T253012S also provides excellent ingress protection with it's NEMA 3R enclosure for both... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from Tamura Corporation of America
• Optimized for High Speed Modem Applications. • Frequency Range 300Hz to 4kHz. • 1500 Vrms Hi-Pot (Pri:Sec). • Approved to UL1950 3rd Edition. • PCMCIA Packages. • Approved to UL60950 & EN60950 [See More]
- Standards / Compliance: UL
- Center Tap Options: None
- Other Transformer Types / Applications: Telecom
- Operating Frequency: 300 to 3500
from Automation24, Inc.
Single phase control tranformer TB1000N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 1 kVA. The TB1000N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 130
from Automation24, Inc.
Single phase control tranformer TB1000N008F0 from Acme Electric has an input voltage of 220, 230, 240, 440, 460, 480 V AC, and an output voltage of 110/115/120 V AC with a power rating of 1 kVA. The TB1000N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 130
from Automation24, Inc.
Single phase control tranformer TB2000N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 2 kVA. The TB2000N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from Automation24, Inc.
Single phase control tranformer TB2000N008F0 from Acme Electric has an input voltage of 240, 480 V AC, and an output voltage of 120 V AC with a power rating of 2 kVA. The TB2000N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required power... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from Automation24, Inc.
Single phase control tranformer TB350N001 from Acme Electric has an input voltage of 120, 240 V AC, and an output voltage of 12, 24 V AC with a power rating of 0.3 kVA. The TB350N001 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required power... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 130
from Automation24, Inc.
Single phase control tranformer TB500N005F0 from Acme Electric has an input voltage of 208, 230, 460 V AC, and an output voltage of 115 V AC with a power rating of 0.5 kVA. The TB500N005F0 also provides hassle free installation with convenient oblong mounting holes. Easily transform the required... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 130
from Automation24, Inc.
Single phase control tranformer TB500N008F0 from Acme Electric has an input voltage of 220, 230, 240, 440, 460, 480 V AC, and an output voltage of 110/115/120 V AC with a power rating of 0.5 kVA. The TB500N008F0 also provides hassle free installation with convenient oblong mounting holes. Easily... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 130
from Automation24, Inc.
Single phase low voltage distribution transformer TF217437S from Acme Electric has an input voltage of 190, 200, 208, 220, 380, 400, 416, 440 V AC, and an output voltage of 120, 240 V AC with a power rating of 1 kVA. The dry type transformer TF217437S also provides excellent ingress protection with... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180
from Automation24, Inc.
Single phase low voltage distribution transformer TF217439S from Acme Electric has an input voltage of 190, 200, 208, 220, 380, 400, 416, 440 V AC, and an output voltage of 120, 240 V AC with a power rating of 2 kVA. The dry type transformer TF217439S also provides excellent ingress protection with... [See More]
- Standards / Compliance: UL
- Operating Frequency: 50 to 60
- Other Transformer Types / Applications: Isolation
- Operating Temperature: 180