Reply to "Whistle Waveform from Model ZW Transformer"

PLCProfOGR Forum Member

@vroberts posted:
...
These changes did produce a small DC offset in the sinewave, but not much, less than 1 volt, which I do not think is enough to activate the whistle relay in a tender.
...

I believe the relay is designed to pick up at 1.1 VDC maximum and drop out at .5 VDC minimum. I am sure someone here has the official spec.

1/22/226:28 PM

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