More about power (1010)

1-05-2004 | Small switch-mode power supplies are often available at a low price from jumble sales, electronics surplus outlets and high street electroni...

1-04-2004 | This circuit will need just a few micro-amps to make an LED flash. The energy comes from a home made ‘vegetarian’ battery.We have to admit t...

1-04-2004 | Audio lovers will no doubt drool over the new Elektor preamp with digital control published in this issue. This, of course, calls for a matc...

1-03-2004 | The UK Government recently announced the world’s biggest ever expansion in wind energy. So how realistic is this scheme? What are the pitfal...

1-02-2004 | The absence of a mains power outlet is often keenly felt on camping sites, with car repairs in the middle of nowhere and with picnic or part...

1-01-2004 | It is a generally known and accepted fact that servos used in radiocontrolled models see very little or no use outside the model flying, rac...

1-12-2003 | Tiny white LEDs are capable of delivering ample white light without the fragility problems and costs associated with fluorescent backlights....

1-12-2003 | How often on average do you have to call members of your family each day to tell them that dinner is ready, it’s time to leave, and the like...

1-12-2003 | Relays are often used as electrically controlled switches. Unlike transistors, their switch contacts are electrically isolated from the cont...

1-10-2003 | GoldCap capacitors offer an interesting alternative power source when compared to conventional disposable or even rechargeable batteries. Th...