Re: Low Voltage Lighting transformer problem

[Mike Barnes <april2006@xxxxxxxxxxxxxxxxxxxxxx>]

In comp.home.automation, Ben Mack wrote:
>Hi
>
>I've installed some 12V halogen lights in some shelves, such that I have
>to mount the transformer remotely. I used 3m of normal 1.5mm^2 lighting
>cable to connect the transformer to the lights, having calculated a
>300mV drop across the cable (30mV/A/m x 3.3A x 3m)
>
>However in practise I'm losing around 6V in the cable, and have
>discovered that the transformer output is 125kHz, not 50Hz, explaining
>the bad attenuation in the cable
>
>So my question is - do all compact dimmable 12V transformers have high
>frequency outputs?
>
>I don't have space for an old-fashioned 50Hz transformer

You could post this to uk.d-i-y as well. Lots of experts there.

(yes, that's really the name of the group)

--
Mike Barnes