Found in American documentation from the 1980s, this circuit uses transistors from that time. It generates increasing and decreasing tones when we press and release the push button.
Found in a 1980s American documentation, this circuit operates with 5 V signals requiring 55...
This circuit was found in old American documentation. Transistor is general purpose and coil rated...
This circuit uses a NAND port to convert rectangular signals from 50 kHz to 1 MHz into triangular...