Is LVDT AC or DC? What is output of LVDT?
Is LVDT Output AC or DC?
The Linear Variable Differential Transformer generates an initial alternating current voltage from its output. The two secondary windings produce differential AC voltage that varies according to the core movement position. The practical use of LVDT signal output focuses on its processing through signal conditioning circuits to generate either DC voltage or current for more straightforward measurement and control needs.
What is the Output of an LVDT?
An AC voltage output from an LVDT shows direct correlation between its core displacement values. The produced output meets the following conditions:
AC Voltage Output:
- The measurement between the two secondary windings yields an AC voltage which represents the output.
- The output voltage strength changes according to the distance the core travels from its central rest point.
- The output voltage phase shifts to one direction or the other according to the core movement.
Highly Linear Response:
- The device generates output voltage signals directly relating to core displacement in its operational range.
- The accuracy and repeatability of measurements can be achieved through this method which is suitable for applications demanding precise measurements.
Conversion to DC:
- Plenty of control systems with digital processors handle DC signals which leads to converting LVDT’s AC output into a high-level DC voltage or current.
- Demodulators in combination with rectifiers alongside filters process this conversion to turn the signal usable by industrial and automation systems.