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.
This tunnel diode circuit was found in American documentation from 1966. The tunnel diode is the...
This simple blinker for incandescent lamp was obtained from an English documentation. The power...
This circuit is ideal for the design of interfaces and shields, as it allows total isolation of...