The cut-off frequency of the circuit shown in the figure is 750 Hz, with the components used. The circuit applies to almost any operational amplifier and the power supply must be symmetrical.
This different audio amplifier was found in a 90's Electronic Design. The circuit uses components...
This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type,...
This circuit can handle 25 A unde a 32 V voltage using a hight power old transistor. This...