Mcd Resistors
Mcd Resistors
How to connect 100.3 mm white LED 6000 mcd to 110 volts?
I need to connect about 100, 3 mm White Leds in series to 110V (household electricity). only be connected to all serial and attach them to the Power Supply or do I have to add the resistors? Is there a website that could give me circuit diagrams? I appreciate everyones help
You can connect a number of them with a series resistor and a Bridge Rectifier line 120 volts. The number that can be connected, and the resistance value depends on the specifications of the LEDs. You have the specifications? Usually has the typical V,, V, a maximum and a nominal value of Si. With a lot of series that can probably work with the typical. Assume this is 3 volts, and if it is 50 mA. You can recalculated to different numbers. Now we must choose a voltage across the resistor, this serves to limit the current, Vf and changes greatly with temperature, and without a limiting resistor, you can burn out all of the LEDs. I will choose 20 volts as the fall in resistance. That leaves 100 volts for diodes, and 3 volts each, you can only put 33 in series. So you need three strings of 33 each, each string with its own resistance. But they may share the same rectifier. Resistance would be: = 400 ohms 20v/50ma power dissipation is 20v * 50th = 1 watt using a resistance of 2 watts. You can use 8-50 ohm / 4 watt resistors in series 1. Puente, use four 1N4004 rectifier in a bridge configuration. Add a 1 / 2 amp fuse. But while you are experiencing, I would add a 100 mA fuse for each chain. PS, you know that 120 VAC or DC can be lethal, and fires cause?.
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