David Nebenzahl wrote:
David Nebenzahl spake thus:

Client wants to install some low-voltage halogens with a dimmer. Is
this OK? I know the dimmer will work, since the lamps are a resistive
load [...]

Doh! What was I thinking? *Not* a resistive load (transformer,
remember?) Never mind.

(Although I have successfully used ordinary dimmers with transformers
for some of my own projects, like a homebrew resistance soldering
unit, I'd never install one in anyone else's house.)

You can dim low-voltage halogens, but I am not sure the standard over
the counter dimmer would be the best best, it will depend on your power
supply. However I suggest you consider the effect on a "halogen" lamp when
it is dimmed. After all they are designed to last longer using the halogen
cycle and that requires high heat. At any dimmed setting, the lamps are
likely not to go into a halogen cycle so the life expectancy may be cut
short.

--
Joseph Meehan

Dia 's Muire duit