www.ultimatehandyman.co.uk

Hi All,

i bought an LED strip off eBay last week

http://www.ebay.co.uk/itm/350915763216? ... 1497.l2649

I went out and bought the transformer listed in the subject from Screwfix (although can't find it on the website) and connected everything up. But nothing worked.

Talked to the eBay seller who asked me to try various other methods, I.E car charger but still nothing worked so he sent me another one out.

This arrived today and still no joy so i'm begining to assume it's something that i'm doing wrong.

On the transformer it states

Prim: 240v¬50/60Hz, 0.26a
Sec: 11.4v¬eff, 5a

The way i'm wiring it up, is my mains feed is connected to the primary wires and the light itself is being connected to the sec wires.

Should this work.

I've also tried wiring it a plug, to save me from keep turning the mains on and off again using the same principle but still no joy.

Am i just being dim here? (no pun intended)

Thanks

It's the wrong transformer. The Halolite you bought has a 12Vac output. You need a dc LED driver.

Since it says if it does not work change the polarity I would assume no damage getting it the wrong way around. However some LED controllers would be damaged with reverse connection. An AC supply of 11.4 RMS = 16 volt peak and could damage a 12 volt unit although I would have expected them to have still worked although dim as half wave rectified would be 5.7 to 16 volt RMS dependent on if any capacitors in the circuit. But to put is simply it does say DC so any damage by using a AC supply is really your fault.

You would need something like this a 30W DC supply on screwfix web site they don't do a 30W driver.

Ok that makes sense then, so something like this http://www.ebay.co.uk/itm/290883688146

That is rated for 12W. The LED strip you bought is 4.8W/m and is 5m long. Unless you are cutting down the LED strip then you need a more powerful driver.

BTW test the LED strip by connecting it to the car battery (a car charger will probably not work).

And as em says - you could have buggered the LED strips by now

Good point I had not thought about the reverse polarity device in a battery charger will stop it working the LED's yes car battery is way to go. I did say 30W OK only really need 24W but likely that will mean 30W.

Apologies for late reply but I've been away with work so unable to test anything. Just put it on the car battery and got it working.


Could I be a pain and ask somebody to tell me exactly which part transformer I need? Preferably from screw fix.


Thought this was going to be simple lol, not dealing with anything that needs a transformer again

Thanks

ericmark wrote:Since it says if it does not work change the polarity I would assume no damage getting it the wrong way around. However some LED controllers would be damaged with reverse connection. An AC supply of 11.4 RMS = 16 volt peak and could damage a 12 volt unit although I would have expected them to have still worked although dim as half wave rectified would be 5.7 to 16 volt RMS dependent on if any capacitors in the circuit. But to put is simply it does say DC so any damage by using a AC supply is really your fault.

You would need something like this a 30W DC supply on screwfix web site they don't do a 30W driver.

Ignore last post,

didn't reliase the picture you posted was a link to the specific one

I've found the similar one on eBay for slightly cheaper so i'll go eBay.

http://www.ebay.co.uk/itm/LED-Driver-Tr ... 5d46674163

It also specifically tells me which one i need for the length of LED strip i have....which helps

Thanks for all your help

I did say 30W I have worked it out.

ericmark wrote:I did say 30W I have worked it out.

I know u did, I was meow meaning that if I looked around first then I wouldn't of had to trouble people on here.


Sent from my iPad using Tapatalk

Oh don't worry I also ask questions of which I think I know the answer and some times I get it wrong so then glad I asked the question. Pobodies Nerfect

I've wired the transformer up now and just wanted to check it all works (with the transformer) so instead of wiring it up properly would/should it still work if i wire it to a plug with a 12amp fuse in?

r055c wrote: so instead of wiring it up properly would/should it still work if i wire it to a plug with a 12amp fuse in?

Yes...however I'd replace your mythical 12A fuse with a real 3A...just in-case..

Lol spot the mistake lol, thanks wine-o. Never thought it would be this difficult to install led lights[FLUSHED FACE]. Live and learn

Hurrah, the little buggers work. Annoyingly tho they aren't as bright as I thought they were going to be [POUTING FACE]

Thanks to all who helped