You’ve probably noticed that everywhere you go — the doctor’s office, hotels, or retail shops, there are tiny PCs everywhere.

There’s plenty of truth to that old saw, especially when a switch-mode power supply from the 1940s still ... that can be rapidly switched on and off by a feedback circuit.

A new changeover switch product range allows users to manually changeover between two power supplies or circuits ... dislodged when operating the on/off switch,” says Raptakis.