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Hi. Any help whatsoever would be great. I have a Topaz Ultra-Isolation Transformer and I want to primarily isolate grounds (safety and signal) in an audio system where some components are 2 prong plug consumer, and some are 3 prong pro. ground loops are produced in such arrangements, unless the safety ground is "lifted" (bad!), or a "special transformer"?? is used. I think the Topaz is good for at least RF noise rejection, but I also need 60~ hum rejection.
Can somebody please tell me if I could use this transformer?Here are the specifications:
Input: 120 Volts 60Hz
Output: 120 Volts 1kVA
Common Mode Rejection 126 dB
Effective Interwinding Capacitance <= .005 pF
Insulation Resistance >= 10,000 Mega Ohms
Temperature Rise (Full Load): 55 degrees CelsiusThanks
Follow Ups:
Hi shinding,I've used the Topaz transformers to provide spike suppression for industrial equipment. It does a good job of stopping high energy spikes and RF, but it is not going to isolate your grounds for you.
What equipment are you having hum problems with? Is this in a permanent install or is a traveling rig? If you truly have a ground loop problem, you can usually eliminate it by paying attention to where you plug your equipment in. Depending on how your system is setup you can usually run everything on the same power by running a heavy extension cord from the stage to your mixer location.
Phil
Does the problem involve running unbalance signals long distance?
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