This circuit can be used to obtain a zener voltage from a common zener of another value, adjusting in a multimeter. The circuit is from an American documentation of the 1970s.
This oscillator from an old publication uses one of the first commercial transistors, the CK722....
This circuit compares the phases of two signals applied to the input, providing an output...
The purpose of this circuit is to enable testing of transistors using a common multimeter. With the...