with a1960s industrial factory light which takes a 300 watt filiment globe ( a giant version of standard bulb). The lamp casing is heavy would that be a transformer?
2006-11-18 21:10:52 · 4 answers · asked by hardlove 1 in Science & Mathematics ➔ Engineering
Hmmm, curious.
If the bulb has a filament you can see, then yet, it will almost certain be dimmable.
I cannot see why there would need to be a trasformer in the box, if you try and wore the lamp in series with a 400Watt rated dimmer, th e worst that is likely to happen is you kill the dimmer.
Try and find a bit more about this (make/model/type) and pop up another question, we can then give better feedback
2006-11-18 21:15:17 · answer #1 · answered by Mark T 6 · 0⤊ 0⤋
Factory lights sometimes do have individual transformers in each fitting. Even nowadays. And the reason is avoiding voltage loss and the need for too thick copper cables in large area installations (long cable distance) with many of such lamps. The required input voltage can be as much as 440 Volt.
Are you sure the one(s) you have are for 240 Volt input (or is is more)? Are you sure the bulb is also a 240 Volt bulb (and not 110 V)? Is there not a label on the "casing" that tells you more?
If there is a transformer, then you need a voltage regulator for inductive loads to dim such a lamp.
2006-11-19 08:30:02 · answer #2 · answered by Marianna 6 · 0⤊ 0⤋
If you can't find any info here's how you find out if it's got a transformer. Take a continuity light or ohmmeter and connect across the input wires. You should get a low reading. Unscrew the bulb, if the circuit opens, no transformer. Simple! Also, you can make an easy high-low dimmer. Just switch a 400V 3 A silicon diode in series with the light, this will cut the power in half.
2006-11-20 00:18:48 · answer #3 · answered by charley128 5 · 0⤊ 0⤋
yes, use an auto transformer
2006-11-19 05:22:26 · answer #4 · answered by The Potter Boy 3 · 0⤊ 0⤋