This circuit was obtained in an American publication of the time. Transistors are commonly used. The circuit can be adapted for use as a shield.
In the diagram we show how to divide the frequency by multiples of 10 using several CMOS...
This circuit with operational amplifier was found in old American documentation. It can be...
This oscillator generates a 1 kHz signal, using an old germanium PNP transistor. The circuit was...