what type capacitor would i need to run more then one LED or do i even need...

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3rmac

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...one?(its for my car)? wanted to know why you use capacitors with LEDs i know what capacitors do they store a charge or something like that. Well i wanted to make a led strip for my car like under the dash its a old car like a 1986 buick regal. i was thinking if the LEDs run off of 3.5v then just like 4 of them would take up one sock it [12V]. Now you get it ? Would i need a capacitor or a few to make more then just 4 LEDs to work? THANKS ANY HELP WILL BE GREAT!!!!!!!!!!!!!!!!!!!!!!
 
You need to run a good resistor, probably about a 2 kilo-ohm at least, then run your LED's in series to drop the voltage. But you do not need a capacitor. If you put a capacitor in the circuit, it would be in parallel with one or more of the LED's, and it would cause the LED to stay on for a small amount of time after you turned your car off.
 
You need to run a good resistor, probably about a 2 kilo-ohm at least, then run your LED's in series to drop the voltage. But you do not need a capacitor. If you put a capacitor in the circuit, it would be in parallel with one or more of the LED's, and it would cause the LED to stay on for a small amount of time after you turned your car off.
 
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