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 circuit is from Motorola's 1990 Linear Databook. We can implement it with other operational...
This power supply is protected from shorts in the load. The BD135 must be mounted on a heatsink...
We found this circuit in a Poptronics of the 90s. The circuit operates from 100 kHz to 30 MHz and...