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Reply to "AC track voltage regulation options"

I cannot comment on the ZW-L fully because I do not own one and had not been able to perform the same level of testing.

Lionel's design of both the GW180 and recent CW80 utilize only 2 FETs per channel, no inductors, and thus a lower through control path resistance. Also, then the source transformer is a 18-19V rather than a higher voltage.

Also, the Legacy powermaster circuit (which in theory is similar to the ZW-L) is also 2 FET based.

Thus, both in testing and design details, less internal resistance. How much, I cannot say, but again less than what you have now.

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