Measure peak to peak TX or RX waveforms with this circuit.

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This circuit purports to measure peak voltages from a few millivolts to several volts up to 200KHZ.
Seems ideal for measuring coil voltages when setting up home made search coils. Anything where you don't have to be counting divisions on old analog scope is big bonus.
Use alongside analog oscilloscope to check out your TX waveforms peak to peak voltages.

[6666]

no attachment.

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I'm unable to upload any attachments at the moment.

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OK, here is the circuit.

[boilcoil]

There is a mistake in schematic of IC1:
-pins are marked wrong;
-conection has to be between output and inverted input;

[dbanner]

There is a mistake in schematic of IC1:
-pins are marked wrong;
-conection has to be between output and inverted input;

Yes, I think IC1 pins are not correct, thanks for pointing that out boilcoil. And feedback should be to inverting input.

[Carl-NC]

Schematic is probably right. IC1 is a comparator, not an opamp.

[dbanner]

I think the pinouts for IC1 are incorrect. The output of the LM311 comparator is pin 7, yet it is shown as pin 1 on the schematic, obviously this cannot be right. Pin 1 on the LM311 is ground, and for IC1, it should be connected to B+, as IC1 takes care of the positive going part of the waveform.
Also, pin 2 and 3 need to be swapped.