Found in Motorola documentation from the 90s, this circuit makes use of a triac from that time. The circuit is for the 110 V mains but can be modified for other grid voltages.
This circuit releases a lock only if the correct 4-digit sequence is entered. The circuit uses...
Found in the 1989 Radio Electronics Experimenter special edition, this circuit was designed for...
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...