Thread: Critic of circuit before I build it.
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Old April 2nd 15, 03:23 PM posted to sci.electronics.design,sci.electronics.basics,rec.radio.amateur.antenna
Jan Panteltje Jan Panteltje is offline
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First recorded activity by RadioBanter: Jul 2006
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Default Critic of circuit before I build it.
On a sunny day (Thu, 02 Apr 2015 09:10:47 -0500) it happened amdx
wrote in :

I'm about to build this circuit to compare output from different
ferrite receive antennas. I will be using it with the the FET amplifier
referenced at the bottom of the page, so the input impedance is not a
concern. I'm mostly interested in the DC output to monitor signal
levels. AM band frequencies.

http://www.crystal-radio.eu/diodedet...dedetector.htm

Any fix for the sinewave distortion in the second and third scope traces.
Mikek

If you really want to be linear for small voltages at ferrite rod frequencies
then a small opamp diode detector would be a lot better.

http://en.wikipedia.org/wiki/Precision_rectifier



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