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.
This small Hartley oscillator uses an output transformer for transistors. The frequency is...
This circuit is from an English publication from 1978. It generates random binary numbers when we...
The regulation of high voltages through common semiconductor circuits, such as integrated circuits and...