Bis
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine. The circuit is compatible with both TTL and CMOS logic.
This TTL circuit was found in the December 1990 issue of Radio Electronics magazine. The circuit has...
Found in an Electronics World of 1968 this circuit can use any SCR and diodes depending on the...
Placed near a telegraphic transmitter (CW) and with a small antenna or pickup, it reproduces the...