[ARC5] More on receiver current drain.
J. Forster
jfor at quik.com
Sat Jan 8 21:44:27 EST 2011
Are the Zeners stud mounted or what?
-John
===============
> Well, Mouser got my Zeners to me today.
>
> Paired up one 120 V and one 130 V and hung them across the output. Total
> current drain at 250 VDC output was 13 mA and voltage dropped was 69
> volts.
>
> The output voltage started slowly climbing past 250 VDC, and kept going,
> while the Zeners got too hot to touch within a few minutes.
>
> Total power dissipated in 10 watts worth of Zeners was less than 1 watt
> (0.897).
>
> The only thing I suspect is that one of the two diodes in the rectifier is
> bad...
>
> :-(
>
> Ken W7EKB
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