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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: Isolation transformer in use info

Posted by jea48 on February 3, 2017 at 12:54:44:
Everything sounds fine to me. Why any DC offset on the mains would have any effect on the Topaz EI transformer beats me. You might check to make sure the end bells are securely tight on the transformer.

The only thing I can tell you is to either buy a DC blocker or build one yourself. If you build one make it big enough so you can try it on the Hair Dryer. Some of those dryers are 1500 watts. (1500 / 120V = 12.5 amps)

The only other thing I can think of is to buy a different brand/manufacture hair dryer for the wife.

One other thing that comes to mind you could try, check out, is to see if the topaz transformer and hair dryer receptacle are fed from the same Line, leg, in the electrical panel. If on the same Line, leg, try putting the hair dryer receptacle on the other Line, leg, or your dedicated 20 amp circuit for your audio on the other.

You never did say where the hair is used now and what the branch circuit size is, 15 or 20 amp. Is the circuit shared with other loads?