Found in a 90s Popular Electronics, this circuit aims to find the voltage of a zener diode up to approximately 20 V. The transformer may have a lower current.
We found this circuit in a 1997 documentation. Power transistors must have good heat sinks. The...
This old circuit is from the era of analog televisions, serving for technicians to make...
e find this circuit in documentation for radio amateurs of 1974. The unijunction transistor can be...