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4-LED Night Light with 120v

Senin, 26 Maret 2012 by skemarangkaian

This circuit uses can be used as a night light. It uses a 120v Mains to power the circuit. Works like a charm!

Schematic


Parts

4x - White LEDs
1x - 9.1K 5watt Resistor
1x - 1N4007
1x - 180or220uF 25v cap
1x - 1Meg 1/2watt Resistor
1x - 100mA fuse
1x - Enclosure

Notes


  • The capacitor C1 is optional.

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LED (Light Emiting Dioda)

Jumat, 23 Maret 2012 by skemarangkaian

LED (Light Emiting Dioda), is a component can product of emissions light. LED findings after dioda. With the same structure also dioda, but later found that the electrons that run into the connection PN also release energy as heat energy and light energy. LED is made to be more efficient if the light issue. To produce light emissions in the semiconductor, doping is the use galium, arsenic and phosporus. A different type of doping will produce a different color of light also.
symbol LED

At this time the colors of LED that there is a lot of red, yellow and green. Basically, all colors can be produced, but it will be very expensive and inefficient.

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