This circuit is based on a regulator component that consists of a transistor and zener in the same package. The circuit can be designed with the equivalent discrete configuration. The current is 200mA.
This circuit was found in an American documentation from 1977. The circuit can be implemented with modern...
You can adjust the frequency produced by a ring oscillator with three inverters inserting a...
We found this circuit in a 1992 magazine, but it can be easily assembled today because the...