This circuit was found in a 1967 Japanese documentation. It consists of a touch control system with two transistors from the time. The circuit uses a power source and sensitive relays.
Found in a 90s Linear Technology document, this circuit uses components from that time. The...
One pulse in the output is produce at each 5 pulses applied to the input. The circuit uses CMOS...
This control for 12 V drills was found in a 90s Elektor. The components are current, and Q1 can be...