All items tagged with LED and Power (32)

1-02-2007 | The light output that can be obtained using LEDs has increased by four or five orders of magnitude over the last couple of decades. What is...

1-11-2006 | The idea behind this project is a simple one. The power supplies for a (A)DSL modem and accompanying WLAN router can draw a total power of a...

1-04-2006 | The switch-mode power supply chosen by the author for this article is built without the use of special-purpose ICs and so can be completely...

1-07-2005 | To get the maximum brightness and working life out of a high-power LED, it needs to be driven at the optimum specified current. Allowing the...

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...

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

1-09-2003 | In recent years the LED has seen many improvements so that we see them fitted in more and more situations where filament lamps were traditio...

1-07-2003 | This circuit senses AC audio voltage supplied to the car-radio loudspeakers and displays it as power using a LED bar graph, achieving at the...

1-11-2001 | Every electronics laboratory needs a powerful regulated bench supply. In the model described here a microcontroller monitors the actual and...

1-07-1994 | Building an LCD module into an equipment (for instance, a voltmeter into a power supply) is often not straight forward, because its supp...