Using a common crystal diode and a 741, this circuit can be used to detect microwaves. The circuit is from old documentation and the switch selects the gains.
The idea of this circuit is to press the button in such a way that the flow of the LED in the...
This is the receiver for the previous circuit we found in the December 1992 Radio Electronics...
This circuit was obtained in a documentation from the National Bureau of Standards of 1968. The...