Powering LED Headlight from the Controller

[Garry Cooper]

Can anybody advise how I can step down the voltage from 36 volts available at an output on my Controller down to 5 -7 volts to power a LED Front Headlamp.
Its a 500 watt EBC kit - I dont really want to use the USB port on the battery as I think it will suffer from water ingress, is there a simple step down component available ???
Thanks in anticipation

 

[Rohloffboy]

Going back to my college days, when doing C&G Electronics 2240, which was about 20 years ago, but from memory something like a Zenner Diode should do the job, if you can find one that is rated 7v, being DC it should be quite simple to to.

 

[IR772]

I think this is perhaps a modern way of doing it.

If you don't mind a bit of wiring, this will do it easy with plenty of capacity.

Easy to give an 8.4 volt output.

http://www.ebay.co.uk/itm/DC-DC-5V-40V-To-1-2-36V-Buck-Converter-Adjustable-Step-Down-Power-Module-8A-200W/152176449350?_trksid=p2047675.c100005.m1851&_trkparms=aid=222007&algo=SIC.MBE&ao=1&asc=38813&meid=8d558eb8c1a1454897a3908ea95f1e2a&pid=100005&rk=3&rkt=6&sd=331736736311

 

[Deleted member 4366]

http://www.ebay.co.uk/itm/LM2596HV-DC-DC-Buck-Converter-5V-60V-to-1-25V-26V-Power-Module-48V-to-3V-5V-12V-/321512279591?hash=item4adba00e27:g:fr4AAOSwQItUCR6F

 

[Rohloffboy]

Outstanding d8veh and IR772, well having been out of the game for 20 years, I can definitely see that electronics have moved on a bit lol!

Superb solution to the OP's question, well done to the both of you.

 

[vidtek]

Outstanding d8veh and IR772, well having been out of the game for 20 years, I can definitely see that electronics have moved on a bit lol!

Superb solution to the OP's question, well done to the both of you.

Rohloffboy-
Check my post here:
12 volt and usb power sockets on e-bikes

No replies yet from anyone-maybe that forum thread is not used much.
If you connect one of these to a ciggie socket, you can power anything and draw up to 3 amps at 12 volts. If you don't need the 12v socket you can get a 5v version and hard wire it.
Cheers, Tony.
http://www.pedelecs.co.uk/forum/threads/12-volt-and-usb-power-sockets-on-e-bikes.25308/