Dimmer switch

[hutchie101]

Hi there,

I am looking to fit dimmer switch to some low voltage lights

I have 3 lights (50w 12v) each with there own transformer (20-60w/va) with Primary 240V - 50/60Hz & secondary 11.4V - 5A

I tried a dimmer switch but didnt seem to work

Could someone please tell me what type of dimmer I require

Many Regards

hutchie

 

[jj4091]

You need to have dimmable tranformers, which I would guess yours are not. If they are what you say with a primary & secondary winding they should be however, but I think it more likely that they have been labelled misleadingly. How have you connected the dimmer you have tried?

 

[electronicsuk]

If they are what you say with a primary & secondary winding they should be however, but I think it more likely that they have been labelled misleadingly.

OP doesn't mention windings, just the primary and secondary sides of (we can only assume) a switch mode transformer.

 

[jj4091]

If they are what you say with a primary & secondary winding they should be however, but I think it more likely that they have been labelled misleadingly.

OP doesn't mention windings, just the primary and secondary sides of (we can only assume) a switch mode transformer.

We can assume what ever we want, it does not change the response I was trying to cover both possibilities.

 

[jj4091]

If they are what you say with a primary & secondary winding they should be however, but I think it more likely that they have been labelled misleadingly.

OP doesn't mention windings, just the primary and secondary sides of (we can only assume) a switch mode transformer.

We can assume what ever we want, it does not change the response I was trying to cover both possibilities.

 

[electronicsuk]

We can assume what ever we want, it does not change the response I was trying to cover both possibilities.

Fair point, although my point was that the labelling isn't really misleading - regardless of whether the transformer is switch mode, double wound or an autotransformer, it still has a primary and a secondary side. The markings are, imo, fine.

 

[jj4091]

Don't you think input & output would be better for electronic type?

 

[hutchie101]

I Bought the lights and transformer in a pack from screwfix show below

12V. IP65. Pre-wired to 60VA electronic transformers and 20A junction boxes for rapid installation. Jetproof, suitable for bathrooms Zones 1, 2 and 3. Transformer featres 1KV surge protection, is dimmable with resistive and inductive dimmers and tested to Safety EN 61347, EMC EN 61547+A1.


Quote No: 93812

 

[jj4091]

Does it say resistive or inductive on your dimmer, if so you have the right type & must be making mistakes when you have connected it( or the dimmer is faulty)