This circuit was found in the January 1999 issue of Electronics Now magazine. The turn-on time is given by the capacitor and MOSFET and must be in accordance with the controlled load.
This automatic control for recording signal level was found in a Radio Electronics from September...
This switched-mode circuit was found in the April 1976 issue of Radio Electronics magazine. The...
This circuit, from a 303 Circuits from the 90s, uses a telephone pickup coil as a sensor to...