It seems than at Mon, 17 Mar 2008 18:25:11 -0700, Jim wrote: > > I have a friend who is a wizard with lighting systems. He > > said that 410W MR16 lamp will put out as much light as that > > old 1000W _and_ have a built-in reflector. But it's 82V, not > > 120V. > > I thought a lot of these 82V lamps were like photoflood lamps, > rated 82V but to be run on normal wall voltage. Very bright, > very short life.
Could be. I have not found anybody who _knows_. Or an existing device to examine. > > So my first thought was a transformer. But I'm not having > > much luck finding a 120V-82V 500VA transformer. > > A variac would do nicely as a transformer. But... > > > The "snag" is I don't know how the lighting dimmer is going > > to react to a half-wave rectified load. > > Dimmer? You can't put a transformer downstream of a > solid-state (chopper) dimmer. Doh! I know that!!! *sigh* I'll blame that thought on it being Monday. > On the other hand, it > probably won't mind a diode cutting off half the cycles. > But see point 1 above. > > -- Jim I couldn't see any reason the dimmer would complain about a half-wave load. But then I missed the transformer and SCR dimmer issue, so how much else did I miss?? I'll probably give it a try with a diode and a fan. A fan... Uh oh. The lamp manuals recommend a cooling fan. What will an AC induction fan do when the waveform gets chopped by a dimmer? Just get hot? I suppose I could use a DC fan and as the heat load decreases, so will the fan speed. -- Philip _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
