Low Voltage Garden Lighting

[wes44]

I have a 12v AC transformer supply to lights in my garden. I want to add a 12v low energy lamp in a summer house. This will only work on DC supply. I understand that the answer may be a Bridge Rectifier. Assuming a 11W 12v low energy bulb please can you advise on what I require and how to use?

 

[wiggles]

It's not quite as simple as that.

See here for more info (and a great animated bridge rectifier): http://www.kpsec.freeuk.com/powersup.htm

Unless you want to play about with electronics (it's good fun), I would suggest getting a bulb rated at 12v AC would be the way forward.

 

[toasty]

12v AC or DC are the same as far as a normal bulb is concerned. Is your low energy bulb a LED type lamp?

If it is actually a normal (filament) bulb then it'll work fine, no need to convert to DC, it'll work fine on AC.

If it is an LED, then you will need either a bridge rectifier or some kind of diode, not too complicated though.

Your problem will be whether the transformer in question can provide the additional current.
Hope this helps
-Dan

 

[electronicsuk]

I want to add a 12v low energy lamp in a summer house. This will only work on DC supply.

Guessing it's some form of fluorescent or LED type, the OP says it only works on DC.

 

[breezer]

question is what is this lamp that will only work on 12v dc?

other thing although its easy to insatll a bridge rectifier for just the one lamp, will the existing transformer be able to supply the extra load?

 

[RF Lighting]

Is the transformer electronic or wirewound?

You can not rectify the output of an electronic transformer.