This current switch was found in a Radio Electronics from November 1957. It triggers the current determined by the electromechanical sensor, a polarized relay of the time.
This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 5...
This transmitter operates in the FM band emitting beeps that can be picked up on a common radio at...
This circuit was found in a 90s European documentation. The circuit already includes a powerful...