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Cascading Isolation/Balancing transformers

I'm not Jon, but the conditioners I use, based on Jon's SQ&D Iso trans, essentially takes an isolation transformer and feeds its output to a balancing transformer. If you reversed the order, you would be giving up a specific benenfit of balanced (technical) power, which is the cancellation of reactive leakage currents. The power coming out of an isolation transformer (without grounded center tap) is not balanced, even if it is fed by balanced power. Additional benefits can be had by putting an appropriate X2 (or in larger values, appropriate motor run caps which are for AC accross the line use and have an internal safety mechanism) rated cap 'accross the line' between the transformers. The optimal value of that capacitior (and any bypass caps) depends on the specific transformers used, and would require experimentation. What this capacitor does it 'convert' differential (transverse) mode noise to common mode noise which is effeciently attenuated by the flanking transformers, as discussed in Jon's thread.


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  • Cascading Isolation/Balancing transformers - pmkap 06:03:43 07/17/06 (1)


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