| Wouldn't it be handy to have a flashlight that turns on automatically when you pick it up? Well, this small circuit will make your wish come...
All items tagged with light and Circuit (25)
| In the second episode of this series we described and energy-efficient relay with a few interesting characteristics. Here the authors elabor...
| The technological world of the 21st century owes a tremendous amount to advances in electrical engineering, specifically, the ability to f...
| Digital decoders in model locomotives usually have two outputs for lighting functions. One switches the front lights for forward travel, and...
| When you step out of your brightly-lit house into the darkness, it takes a while for your vision to adjust. A solution to this problem is th...
| There are two sorts of lights on aircraft: red or white flashing lights, which are called ‘anti-collision lights’, and steady lights, red on...
| This is a design for a rear bicycle light that automatically switches on and off according to ambient lighting conditions. The red LEDs flas...
| The author set to work equipping a model car with realistic indicators, headlights, tail lights and brake lights. The basic idea was to tap...
| The LED bicycle light that we described in the July/August 2009 edition of Elektor has proved very popular. The author was particularly stru...
| Loss-free switching, using a Field Effect Transistor (FET) and a capacitor‘s discharge function, is the base theme of this elementary circui...