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Old 10-15-2011, 08:57 AM   #1 (permalink)
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Question LEDs

I was wondering if anyone out there knows something about LEDs.

I've been wanting to wire together my own stuff for ages, but i dont know where to start. I've looked around instructables and other sites, but I can't find a complete beginner, advanced and expert guide to LED wiring and circuitry.

any help would be appreciated.
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Old 10-15-2011, 10:03 AM   #2 (permalink)
 
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Default Re: LEDs

Wht do you really need to know? They are a diode, so it can only go in 1 direction, and only need like 2V max.
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Old 10-15-2011, 12:20 PM   #3 (permalink)
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Default Re: LEDs

I need to know how to wire stuff: where to buy LEDs capacitors and wires, how to choose all the right components, what each of them do and so on.
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Old 10-15-2011, 12:39 PM   #4 (permalink)
 
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Default Re: LEDs

Oh...... youre asking a whole lot actually... I don't think anyone can honestly easily, or shortly answer you.
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Old 10-15-2011, 04:26 PM   #5 (permalink)
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Default Re: LEDs

Pickup a book on simple electronics, a soldering iron, 60/40 solder (a little goes a long ways, don't get lead free solder), some small wire, probably 16/18/20 gauge, and practice soldering wire together. Research DC circuits, and LEDS.

Every LED is different, lets say you have 3 LEDS, that use 20ma, and 3.3v, a single 110ohm resistor, and those 3 LEDS in series will work on a 12v power source, if you get the resistor wrong, or use too much voltage you WILL blow the circuit out, and cause the leds to possibly pop upen.

As with an LED a capacitor is going to always be different, on voltage and capacitance. Capacitance is the amount of charge the capacitor is rated for. You also have different QUALITY capacitors. They are meant to provide CLEAN power to a circuit, kind of acting like a filter. Lets say you have a 16v circuit, but it fluctuates a little, and you need the voltage and current to be as stable as possible, the capacitor will "absorb" the extra charge, and save it for when the voltage/amperage drops below what is required. So you would use a 16-18v capacitor, with a specific capacitance to maintain that circuit.

A transistor is basically a light switch, you have some simple 3 legged transistors, and some rather... complicated ones. You have a Base, an Emitter, and I forgot what the third one is called. You won't really get into these till you learn a decent bit about DC circuits.
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