What is Residual Voltage in LVDTs?

A Linear Variable Displacement Transducer (LVDT) is a reliable solution that can be used when physical displacement or position needs to be converted into an electrical signal for control or indication purposes. Here at Sentech, our LVDTs facilitate contactless operation, with long life, no loss in performance, infinite resolution, unlimited mechanical life, single-axis sensitivity, damage resistance, fast dynamic response, and absolute output. They perform well in high-pressure situations, with our strong engineering and manufacturing capability that’s designed to last no matter what the demands.

What is Meant by Residual Voltage in LVDT?

In an ideal situation, the output voltage at the null position would be zero. In reality, you’ll find a small voltage discrepancy. It’s known as residual voltage, as it represents the small amount of voltage at the null position. It can be caused by the presence of harmonics in the supply voltage due to the use of an iron core. Acceptable limits for residual voltage in LVDT are less than 1% of the full-scale output voltage.

What About the LVDT sensor?

The LVDT sensor is designed to support either a single-channel or multiple-channel device.

For single-channel:

• Our single channel LVDT offers feedback for systems with commercial, industrial, and military aircraft system use case scenarios.
• They’re designed to be compatible with a range of mounting options.
• It offers reliable high performance and shock resistance for most industrial uses.

For multi-channel:

• Our multi-channel LVDT offers redundancy, so you’re covered in case of sensor failure.
• Each channel features its own common armature, with controlled tracking accuracy.

What is the LVDT Output Voltage Formula?

The formula for the LVDT output voltage is the differential voltage between the two secondary windings. Usually, the output voltage is converted by using suitable electronic circuitry. You can use a high-level current.

Key Takeaways:

• Residual voltage represents the small amount of voltage at the null position.
• Our single channel LVDT offers feedback for systems with commercial, industrial, and military aircraft system use case scenarios.
• Our multi-channel LVDT offers redundancy, so you’re covered in case of sensor failure, along with tracking accuracy.

Next Step: Schedule a Consult With Sentech

At Sentech, we’re a global leader in both designing and manufacturing position sensors, which includes Linear Variable Displacement Transducers (LVDT), HYDRASTAR sensors, Rotary Variable Differential Transducers (RVDT), FASTAR sensors, solenoids, and signal conditioners. With more than 30 years of experienced engineering, we offer high-quality service and support, with the industry-leading manufacturing you need. Contact us today and find out how we can help you achieve excellence!