- on Power Supplies
- Published in issue 5/2004 on page 0
Global Power Supply
With continuously variable output voltage
Small switch-mode power supplies are often available at a low price from jumble sales, electronics surplus outlets and high street electronics shops. We’ll show you how these units can be put to good use.These SMPSUs from surplus lots can handle any power line voltage between 100 V and 240 V, which makes them suitable for use all over the planet. They adapt automatically to the mains voltage measured. Not much larger than a cigarette pack, these SMPSUs are short-circuit and overload proof, offering an output power of up to 50 watts depending on the type on offer.