The gain of this amplifier is given by the components indicated in the formulas next to the diagram. The power supply must be symmetrical and equivalent operational amplifiers can be used.
This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can...
The input resistance of this circuit is 60k and the pass band from 20 to 20kHz. The circuit is...
This circuit was proposed by an old American documentation for listening to SSB stations. The...