This circuit was designed to power the previous circuits of the wireless sound system, but it can be used for other purposes. The circuit is from a Radio Electronics from August 1988.
This 2000 circuit can be used to match the low impedance of a microphone to the high input...
If there is an indispensable household appliance in our kitchen these days it is the microwave...
We found this circuit in the Radio Electronics Handbook magazine special edition of 1992. The...