Hello

New here and greatly appreciate any input on the following:

I have a table lamp design which has a 700 mA LED. This is driven by a 12v wall power supply and need an inline dimmer switch.
At the moment I can source a 350mA dimmer switch, but would like a 700mA.

Is there a small module I can house in the lamp after the dimmer switch, before the LED so I can have a 12V dimmer switch on the cable, going to this module that then puts out more or less current so the LED lamp is dimmed?

Or am I going about it in the wrong way?

Ideally I would only like max 12-24V from the wall power supply, so I do not have the risks of mains power design in the lamp itself. I am NOT an electronics engineer, but a designer.

Thank you!

 

Is the power supply 12V DC or AC?

 

Is the power supply 12V DC or AC?

AC 100-220v in and 12V DC out

 

You might be able to use a variable DC supply with a maximum out of 12 volts. If the light also has a battery power option it will be very simple to see if it gets dimmer with a weak battery. Some kinds will others will not. A variable linear regulated DC supply is very simple and easy, but not very efficient.
Worth experimenting a bit, though.

 

The LED's in the lamp are probably driven by an IC or two (maybe). If there's any kind of LED drive or controller in the lamp, then inlining a 12v dimmer may not work.

Find a 6vdc 5vdc wall wart and power the lamp from that, do you get 1/2 the light, does it work w/o flicker?

 

Find a 6vdc wall wart and power the lamp from that, do you get 1/2 the light, does it work w/o flicker?

Or use the very common 5V USB wall-wart chargers.