Found in Popular Electronics from the 90s, this circuit is intended for a radar emitting pistol. The circuit is very critical for the frequency at which it operates.
We found this configuration of band rejector filter or band rejector with operational 741 in a...
The circuit shown charges Nicad batteries from the bicycle dynamo and provides constant energy for a...
This circuit requires an input current of only 20 fA (femto amps) which corresponds to a...