This circuit was found in the March 1995 issue of Electronics Now magazine. The circuit requires a symmetrical power supply, and the FET is a common general-purpose type.
In this charger the current is limited by the incandescent lamp. Lamps from 40 to 100 W can be...
This turntable filter was found on an 80's Elektor. The circuit makes use of operational features...
In this circuit of 1987 the player has to briefly press one of the keys trying to hit which LED...