We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a frequency range determined by C1 and R3. The signal generated is square.
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...