More about LED (792)

1-12-2003 | As this issue comes through the letterbox, it’s around the time that the Christmas decorations are taken out of the attic. And if you hurry...

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...

1-05-2003 | We have featured numerous torch circuits using white LEDs. This simple design adds a couple of other types of LED to extend light emissions...

1-04-2003 | A handful of high-intensity LEDs is sure to provide new accents in room lighting. In traffic lights and other signalling equipment, they sav...

1-03-2003 | The serial port (often called the COM port) is perfect for connecting various electronic circuits to the PC. The complexity of the connected...

1-02-2003 | Most commercial digital Capacitance meters can measure capacitors from a few pFs (picofarads) up to 2,000 µF (microfarads). A few are able t...

1-01-2003 | Using a simple SMS message sent from your GSM phone, two mains powered loads may to be switched on and off independently, or programmed to d...

1-12-2002 | Here is a random flashing LED circuit which is economical at just 1 mA while using a minimum number of parts. With two spare gates available...

1-12-2002 | Unfortunately, these days it is no longer an inordinate luxury to protect your car against break-in and theft. Many car insurance companies...