This circuit was found in a Japanese publication from the 1960s. It uses germanium transistors and is powered by a voltage of 22.5 V. The circuit includes the erasure oscillator.
With the circuit shown in the figure, it is possible to connect or disconnect a load controlled by the...
This immobilizer circuit for the car was found in the Radio Electronics magazine of December 1976....
This fast converter using operational was found in a 70s American documentation. The circuit can be...