Help with AC adaptor

[diyFool]

I have a blown adaptor that used to run four LV 20W bulbs. The unit details are below. Can anyone recommend a similar product as I've searched for, but cannot find anything that makes sense as I have no idea what the numbers mean :O) Input: 230-240V AC 50Hz Output: 12vAC 7000ma Max 84VA it has one output so I guess that means the light are serial. Any help would be hugely appreciated, Thx

[Hymie]

This is what you need, from Screwfix:-

http://www.screwfix.com/search.do;jsessionid=J D42JSPGTCJSGCSTHZOSFFY?_dyncharset=UTF-8&fh_se arch=39220-91&searchbutton.x=25&searchbutton.y =10

It is a mains transformer with a 12Vac output, rated to a maximum of 105VA, which is suitable for powering 4 lamps, each rated at 20Watts, 12V.

[diyFool]

Thx Hymie, I tried this unit but it has 3 outputs instead of just 1 so didn't work. I've tried this http://www.maplin.co.uk/Module.aspx?ModuleNo=2 9782 that works but the lights are very dim. Any other suggestions?
Thx

[ACtheTROLL]

diy
the screwfix looks ok - the trouble is - you aren't familiar with electickery
my advice would be find someone who is

burning the house down is a real option here - these transformer/load run at such high power/temperatures that you don't get a second chance (7000mA= 7 amps - you don't mess with 7 amps)

if the maplin is faint
I suspect that you are running the lights in a daisy chain (series) ------x-----x------x-----x------
rather than parallel ====x====x====x====x

which is why ....
series shares the voltage - so 4 at 12v = 3 v to each bulb
so the christmas lights use 20 12v bulbs in series - which plug directly into the mains (you can't beat sitting round a good fire at christmas!)

parallel maintains the voltage and so increases the power drawn (current) - so it works hot and bright