This circuit that imitates the sound of the cowboys' calls with their “louder” was found in a Hands On Electronics from the 80's. The integrated circuits used are from that time.
With an ultra-low consumption, this circuit can be powered by solar cells. The circuit is from a...
This circuit is intended to recover a very weak signal at a receiver, for example, a CW signal or a...
Found in a Motorola documentation from 1965, this circuit consists of an electronic ignition with a...