Will this work??????
 

Hello all :D I was looking to put headlights in drift car. Since I don't want to spend $$$$ on buying a pre-made kit, i'm going to make my own. So my question is, will this set up work???

http://i657.photobucket.com/albums/u...0124111224.jpg

Anyone?

I dont see why that would not work. Wire it up and see. The most that would happen is you blow one of the bulbs or leds. good luck.

looks like a cool project id like to see it if it does work

love the drawing of the "led" LOL

maybe better to put switch on ground side?
and use resistor to lower the voltage?

Going by what info you have provided you ideally need some added series resistance (or diodes) to limit the voltage/current to the LEDs. You have 9V of power but only 6.4V of load.

It might work, depends on how far the LEDs can really go, and what the actual voltage under load of the 9V battery is.

Three LEDs would be close though. Or if you powered the 2 LEDs directly from a 7.2~7.4V main RC battery for example.

Good day!

Once the bias voltage of the led has been reached it is almost a dead short. There must be current limmiting resistors in series with the LED or it will become a DED (dead emitting diode) almost instantly.

I've wired up LEDs before and just plugged them directly into my receiver. I had four 3V LEDs in a 2s2p configuration (each set of 2 LEDs wired in series and then the 2 sets wired together in parallel)

Since my ESC powers my rx with around 6V, it worked perfectly. You just need a spare channel (bind slot would work fine)

Have a look here.

http://www.ehow.com/how_4480452_wire-led-lights.html

Well here is your answer, first you are correct with the switch on the positive side, you should always switch your supply and not the ground, electronics 101 for pure safety reasons, now for current limiting, you have 9V supply but are only using 6.4, that leaves 2.6V@20mA so you take 2.6/0.02 = 130 0hm resistor but realistically any resistor from 120 to 180 ohm will be fine so it should go + into switch into resistor into lEDs into - and you are away laughing.

Good day!

This question was asked in 2 different threads and I gave a schematic in this one.

http://www.rctech.net/forum/electric...will-work.html

Check out this site:

http://www.ledcalc.com

Just plug in your voltages and it builds a schematic for you. Very cool!