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motorcycle electrical help please

Lambretta-Dazza

Dec 3, 2008
1
Joined
Dec 3, 2008
Messages
1
Hello to one and all. Please bear with me but I'm a newbie when it comes to electronics, and desperately need some help and advice.

I have a 1963 Lambretta which has 6v AC electrics. I have been told that this can be converted to 12v DC, as I wish to replace my rear stop/tail light, as when the bike is stationary, the rear light is hardly noticeable. I have to travel along unlit country lanes and it is very dangerous at junctions etc.

I am wishing to make a light board out of 30 Superflux white LEDs. These are the ones I bought - D'oh!, won't let me post links???????? If you need to see them please look up Phenoptix site.
I also bought suitable resistors, and a suitable board to mount them all on.

I have read that in order to make AC - DC, firstly I need to make a "bridge rectifier". This will then pass through capcitors to smooth out the waves, and then into a regulator to end up as pure 12v DC output.

First question. Is the above correct?
2nd question. What components do I need?
3rd question. How many of each component do I need, and what values or ratings do they need to be?

If I haven't asked something that I should need to know, can you please fill in any gaps.

Your help and advice is greatly appreciated, and urgently required.

Regards
 

neon

Oct 21, 2006
1,325
Joined
Oct 21, 2006
Messages
1,325
1] you need a bridge rectifier at least 100amps 100v reverse breakdown then you need a battery to charge to it just like a car. then forget about it because the power is too great for you to handle being a newbie. for the LED white is fine for the front but you need red for the back. you may run these LEDS with just a series diode right off the AC. YOU HAVE TO find out how much current/voltage they need and tie them in series asume 3v 25ma for one you need a series resistor to limit the currnt to 25 ma if they are 2v then you tie 3 in series to make 6v you may tie how many you like in parallel.LEDS blow up if you exceed the rating whatever they may be.
 
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