| Most hobbyists will have some tools that are battery-powered, such as a drill, screwdriver or power scissors. Unfortunately (and especially...
All items tagged with Power and Circuit (47)
| The AC powerline indicator presented here has a complete galvanic isolation from the grid. The indicator is an LED that lights up when a cur...
| When a switched multiway is used to power a PC, printer, scanner, modem, and so on, all these devices often stay powered, in stand-by, simpl...
| Although the acronym ‘LED’ has stood for ‘light-emitting diode’ since the 1960’s, LEDs have only recently started to emit significant amount...
| The LM4050 from National Semiconductor is a high precision micropower shunt voltage reference in a sub-miniature, surface-mount, three pin,...
| The voltage step-up converter described in this article is a transformerless design based on just one integrated circuit and a handful of...
| This circuit was originally designed to control the brightness of an electric torchlight, but may find many other applications because o...
| The circuit described in this article is primarily intended for installing into a PC, to act as a versatile supply for all kinds of experi...
| The testet provides 16 LEDs arranged on the board in the shape of a 16-pin DlL package. Each of these LEDs indicates the logic level pre...
| Most of you will be familiar with the etassie resisror-capacitor cornbination which serves to reset a microprocessor er -controller.