I designed and built a circuit to measure displacement.
I made a coil and connected a wein oscillator to the coil, which changes the voltage at both ends of the coil by moving an iron rod inside it, then by ideal rectifier, the voltage of the coil turned to DC voltage.
unfortunately, now the output of the circuit changes about 1% when the rod not changing and the rise of temperature can change the output about 4-5% for the rod to remain fixed.
Can you please help me to improve my circuit against the variation of the output? or if you know a better circuit, please suggest it.
Thanks and Best Regards,
I made a coil and connected a wein oscillator to the coil, which changes the voltage at both ends of the coil by moving an iron rod inside it, then by ideal rectifier, the voltage of the coil turned to DC voltage.
unfortunately, now the output of the circuit changes about 1% when the rod not changing and the rise of temperature can change the output about 4-5% for the rod to remain fixed.
Can you please help me to improve my circuit against the variation of the output? or if you know a better circuit, please suggest it.
Thanks and Best Regards,
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