Fullwave single rail precision rectifier with ground referenced input

134

01:05:53

I built this circuit using a TSH 22 opamp ( quite fast 15V / uS ) and BAT 46 Schottky diodes, it worked but there was a bit of an error in that the peak of the rectified waveform was a bit higher than the peak of the input waveform ( 1 KHz sine wave ) anyone know why that might be ? 

published 7 years ago

gasboss775

7 years ago

This worked better with a TL082, probably as almost no issues with input bias currents. Also the circuit is very sensitive to the ratios of resistors, so they need to be matched ( using a DMM ) and definitely metal film 1% at the very least.

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