Voltage Linear Potentiometers
Description
Voltage linear potentiometers are devices used to measure and control voltage levels by varying resistance. They function as a part of a voltage divider circuit, providing an output voltage that is proportional to the position of a movable wiper along a resistive element.
Working Principle
Voltage linear potentiometers operate by moving a wiper along a linear resistive element. As the wiper moves, it changes the resistance between the terminals, effectively dividing the input voltage into a smaller output voltage. This output voltage is directly proportional to the wiper's position, making these potentiometers useful for precise voltage control and measurement. They are often used in applications where linear displacement needs to be converted into an electrical signal.
Applications
Voltage linear potentiometers are commonly used in various applications that require precise control of voltage levels. Specific examples include:
- Audio Control: Used in audio equipment to adjust volume, tone, and equalization settings.
- Motion Control: Employed in systems that require feedback on position or movement, such as in robotics or industrial machinery.
- Displacement Transducers: Used to measure linear displacement in mechanical systems, converting physical movement into an electrical signal.
Advantages over other Linear Potentiometers
One of the main advantages of voltage linear potentiometers is their ability to provide a highly linear output, which is crucial for applications requiring precise voltage control. They are often constructed with special alloys or precious metal wipers and conductive plastic resistive elements, allowing them to withstand extensive use, up to 100 million revolutions, as noted in .
Limitations
Despite their advantages, voltage linear potentiometers have limitations. They may not provide the same level of accuracy as digital encoders, especially in applications requiring digital outputs. Additionally, their mechanical nature can lead to wear and tear over time, potentially affecting performance and requiring maintenance or replacement.
Considerations
When selecting voltage linear potentiometers, several factors should be considered:
- Initial Costs: The cost can vary depending on the materials used and the precision required.
- Operating Expense: Generally low, but can increase if frequent maintenance is needed.
- Durability: High durability is achievable with quality materials, but mechanical wear is inevitable.
- Accuracy: While they offer good linearity, they may not match the accuracy of digital alternatives.
- Replacement and Maintenance Costs: These can be significant over time due to mechanical wear, necessitating periodic checks and potential replacements.
from Novotechnik U.S., Inc.
Designed for hydraulic and pneumatic applications, Novotechnik in-cylinder position sensors feature magetostrictive non-contacting technology for long life. [See More]
- Output: Voltage; Current
- Measurement Range: 1.97 to 167
from Sensata Technologies
Body and cover - aluminum (RohS). Measuring cable – Stainless steel [See More]
- Output: Voltage; Current
- Operating Temperature: -4 to 176
- Measurement Range: 78.74
from Novotechnik U.S., Inc.
Open systems provide a cost-optimized solution for engineers seeking to integrate a resistive element into their designs. [See More]
- Output: Voltage
- Measurement Range: 1.97 to 19.69
from Sensata Technologies
Body and cover - aluminum (RohS). Measuring cable – Stainless steel [See More]
- Output: Voltage; Current
- Operating Temperature: -4 to 176
- Measurement Range: 118
from Novotechnik U.S., Inc.
Open systems provide a cost-optimized solution for engineers seeking to integrate a resistive element into their designs. [See More]
- Output: Voltage
- Measurement Range: 0.9843 to 9.84
from Sensata Technologies
Body and cover - Aluminium (RohS) Measuring cable – Stainless stee [See More]
- Output: Voltage; Current
- Operating Temperature: -4 to 176
- Measurement Range: 236
from Novotechnik U.S., Inc.
Open systems provide a cost-optimized solution for engineers seeking to integrate a resistive element into their designs. [See More]
- Output: Voltage
- Measurement Range: 0.3937 to 11.81
from Sensata Technologies
Analog output draw-wire – measurement range 0 up to 15 000mm [See More]
- Output: Voltage; Current
- Operating Temperature: -4 to 176
- Measurement Range: 591
from Novotechnik U.S., Inc.
Some applications require a position sensor that returns ‘to zero ’ on its own. Novotechnik covers these applications with non-contacting and potentiometric sensors offering a wide variety of stroke lengths and other features. [See More]
- Output: Voltage
- Measurement Range: 0.3937 to 1.97
from Sensata Technologies
Analog output draw-wire – measurement range 0 up to 20 000mm [See More]
- Output: Voltage; Current
- Operating Temperature: -4 to 176
- Measurement Range: 787
from Novotechnik U.S., Inc.
Some applications require a position sensor that returns ‘to zero ’ on its own. Novotechnik covers these applications with non-contacting and potentiometric sensors offering a wide variety of stroke lengths and other features. [See More]
- Output: Voltage; Current
- Measurement Range: 0.3937 to 0.9843
from Novotechnik U.S., Inc.
Some applications require a position sensor that returns ‘to zero ’ on its own. Novotechnik covers these applications with non-contacting and potentiometric sensors offering a wide variety of stroke lengths and other features. [See More]
- Output: Voltage; Current
- Measurement Range: 0.9843 to 3.94
from Novotechnik U.S., Inc.
Some applications require a position sensor that returns ‘to zero ’ on its own. Novotechnik covers these applications with non-contacting and potentiometric sensors offering a wide variety of stroke lengths and other features. [See More]
- Output: Voltage
- Measurement Range: 0.3937 to 7.87
from Novotechnik U.S., Inc.
Some applications require a position sensor that returns ‘to zero ’ on its own. Novotechnik covers these applications with non-contacting and potentiometric sensors offering a wide variety of stroke lengths and other features. [See More]
- Output: Voltage
- Measurement Range: 0.3937 to 3.94
from Tekscan, Inc.
FlexiPot Position Sensing Applications. FlexiPot membrane potentiometers are ideal for integration into: Consumer electronics (user interface in PDA). Electronic Menu Navigation (scroll through options). Industrial Controls. Medical Devices (plunger position). Benefits of FlexiPot as your Position... [See More]
- Output: Voltage
- Operating Temperature: 15 to 400
- Linearity: 2
- Linear Potentiometer Type: Wire Wound