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 circuit is from the 1972 RCA Linear Integrated Circuits Manual but can still be easily...
With only one integrated circuit and few additional components, this amplifier has an output power...
This circuit was found in ancient American documentation. Diodes are general-purpose types. |...