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.
In this circuit a 12 V lamp or LED blinks with the music signal applied to the input. R depends on...
We found this circuit in a 1976 documentation. The circuit uses a double gate MOSFET. The circuit...
This circuit was found in an Electronic Design from the 90's. It makes use of components from the...