Disclaimer: This circuit is an industrial upgrade for the capacitor-based supply solution, it is connected to the 220V-AC Mains, non-galvanically isolated. if you are not familiar with the electrical ...

This variable power supply is using 7805, 7809, 7812 or 7815 voltage regulators, where the last 2 digits represents the maximum output voltage of the IC. This circuit offers excellent ripple rejection ...

The best part about post-mortem teardowns of electronics is when you discover some unusual design features, whether or not these are related to the original fault. In the case of a recent ...