This circuit featuring a new quadruple operational amplifier was found in the March 1980 issue of Radio Electronics magazine. The circuit is to be powered by a symmetrical 15 V source.
This simulation shows how a transistor can be used as a switch turning on and off in the LED. The...
This circuit was obtained in an English publication of 1975. It is a circuit that stabilizes an...
This is a common circuit in the 1990s, when experimental FM transmitters were in vogue. The...