Hi,
I am working with a feedback circuit for a sensor. I excite the sensor with a sinesodal voltage of aroung 50-200mV and 1K-500KHz. The output of this sensor is to read and so it is amplified. Now I need to put back the output voltage to 50-200mV since it is a feedback. I tried to use an AGC for this purpose but turned out to be real complicated for low amplitude signals. So I thought of using an diode clamping circuit to serve my purpose. But this gives a square wave of different harmonics. I need to convert this to a sine wave to avoid this. Can you suggest me any circuitry to serve my purpose. Can you also suggest any simple circuitry for AGC if any. Kindly do this help.
Regards,
Deepika
I am working with a feedback circuit for a sensor. I excite the sensor with a sinesodal voltage of aroung 50-200mV and 1K-500KHz. The output of this sensor is to read and so it is amplified. Now I need to put back the output voltage to 50-200mV since it is a feedback. I tried to use an AGC for this purpose but turned out to be real complicated for low amplitude signals. So I thought of using an diode clamping circuit to serve my purpose. But this gives a square wave of different harmonics. I need to convert this to a sine wave to avoid this. Can you suggest me any circuitry to serve my purpose. Can you also suggest any simple circuitry for AGC if any. Kindly do this help.
Regards,
Deepika