Help with LED strip lights

[Dannyhack]

Good afternoon eveeyone,

I’m trying to install some under counter LED strip lights in the kitchen.

I currently have a transformer which used to host a spot light. Picture of the transformer added.

When I try to add my 12v strip lights to the other side of the transformer and turn the strip lights on, it flashes for half a second and then turns off again.

I have attached a photo of the strip lights I have.

I have also tested the transformer, plugging in the old light and it works fine.

Can anyone assist please?

 

[Scally-Ho]

I suggest you obtain a 'transformer' dedicated to LED lighting and also matches the load of your LED strip(s).

 

[flameport]

I currently have a transformer which used to host a spot light.

That thing outputs AC for an obsolete halogen lamp.
The LEDs require DC.

 

[briwire]

Agree with above, what looks to be a tranny, supplies AC. You need a DC power supply for your LEDs.

 

[ericmark]

Also

shows needs at least a 20 watt load, I suppose it does transform 230 volts to 12 volts, but it is not what we would see as a transformer.

An extra low voltage power supply can be 50 Hz AC, kHz AC, rough DC, or smooth DC. And it can be current or voltage regulated. The lighting industry has been rather naughty by swapping words around all the time, so what we would call a switched mode power supply, they call a transformer, and what we would call a driver (current regulated) they give the same name to any DC power supply be it voltage or current regulated.

I would not be surprised if they called a spade a shovel?

that seems unlikely, my cabinet lights are very bright if not dimmed, good enough to read with, and they are 22 watts. Also, 12 volts for domestic often means 12 volts, but with vehicles 12 volts means up to 14.8 volts. So one has to be very careful what one uses.

This 12 volt power supply, is just over 100 watts, and would likely kill the LED's as one more like 16 volt peak voltage and two no smoothing, and this

is only 24 watt so too small. This

yes 100 watt smooth but has exposed live terminals so would be to be inside a panel. So more looking at something like this, ⁣but as said I would think if 100 watts it would be very bright. These are 22 watts, colour changing dimmable, and at fully dimmed are still a bit too bright, came from Lidi, complete with power supply and controller, in a very durable polythene strip easy clean, and with sticky back already on them. The problem was they need to plug in, but I just fitted a dedicated socket where it will not be seen. At 22 watt would need sunglasses to work at the counter. At 100 watt, likely welding glasses.

I don't think they will be 100 watts, but we have no way to know that for sure.

 

[Murdochcat]

Always source the appropriate driver / transformer from the vendor of the LED strip is my advice