Level shifter inrush current

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Original poster: "J. B. Weazle McCreath by way of Terry Fritz <twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>


Hello Coilers,

Are those of you who are running twin MOT level shifter type supplies
having any problems with inrush current at switch on?  Checking in my
ARRL Handbook and other technical manuals, I'm finding recommendation
to use some resistors in series with the diode strings to limit large
inrush currents from blowing the diodes.  However, the supplies shown
have much larger filter caps than what we are using, and perhaps that
and the winding resistance of the MOT secondaries is enough to act as
built in limiting.  Comments, suggestions....

73, Weazle, VE3EAR/VE3WZL

Listening: 147.030+ and 442.075+
E-mail:    weazle-at-hurontel.on.ca
           or ve3ear-at-rac.ca
Web site:  http://www.hurontel.on.ca/~weazle