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  • #7015

    Joseph Bento
    Forum Participant

    I’m very concerned with the schematic shown for the bucking transformer in the Summer 2015 newsletter. The author is manipulating the neutral line from the mains. I had always learned that this should never be done, and the neutral should be contiguous throughout its wiring. Instead, the hot line should be fed back through the secondary to buck or aid the line voltage.

    #7017

    Gerry O’Hara
    Keymaster

    Hi Joseph,

    You are correct. The schematic for the bucking transformer was pulled off an article posted on an electronics website to illustrate the concept – I had not noticed that the bucking action was indeed shown on the neutral line in this particular configuration. Interestingly, the notes on the schematic show that this was a feature of ‘Rev 3’ to that circuit, however there is no explanation as to why this was thought appropriate! Given that the bucking will only float the output neutral line 6 or 12 volts above the input neutral, I (personally) would not be too concerned in this application, however, I will publish an errata in the Fall 2015 Newsletter. Thanks for pointing this out.

    Gerry

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