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Help identify this transformer
Slippyblade:
I am currently piecing together the power center in a cab following the instructions here: http://www.therealbobroberts.net/acwiring.html. I am working with the guts of a cabinet I recently acquired, thread here http://forum.arcadecontrols.com/index.php?topic=102828.msg1090477#msg1090477. However, what I thought was an isolation transformer appears to not be.
The one side has a green wire that is obviously an earth ground as there is a zero resistance between it and the transformer casing. There are also three wires coming from that same side ending in a 3 prong molex connector. The wires are White and Black on the sides and middle one is Black w/White stripe. Other side has 2 White wires ending in a 2 prong connector. If I wire up the first side to ground and then the white and black to my filter I am getting 120v on that side of the coil but only 12ish on the other side.
The only identifying mark that I can find is a sticker with the numbers 437P41 and 549-9504 on it. I'm getting the feeling I'm not wiring it correctly or something.
Any help would be great as this is annoying as hell...
Slippyblade
BobA:
From your description it sounds like a 120 to 12V center tapped or 24v center tapped depending on where you measured the voltage on the secondary side. Transformer is used for power supplies not isolation.
Slippyblade:
Kind of what I thought, but I'm wondering what the heck it was doing in the cab to begin with... And now I have to try to find an isolation transformer for the stinking monitor. :angry:
CRRRAAAAPPPPP!!!! I just figured out what the heck this thing was... The guy I bought the cab from said he used to have a 4-way audio amp inside it driving the speakers. Said it was his uber-juke back then. When I looked up center-tap transformers just now, the article mentioned that one of the common uses was in audio amp power centers. Hmmm, I think the mystery is solved and I've got a transformer that does me NO good. Dang it.
BobA:
If there was a monitor in it when it was a juke cab how was it powered? Are you sure it needs an isolation transformer?
Slippyblade:
Yeah - schematic says so. The cab was pretty beat up and stuffed with random parts when I got it, so lord only knows what happened to the original. I just looked at pricing thought and an isolation transformer only runs about $10 so no huge issue.
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