Re: [TenTec] Centurion 422

[pfizenmayer <pfizenmayer2@q.com>]

Nope - the meters drop 2.38 volts at 1 ma - 2380 ohms and are fed from 
fairly large series resistors so the 3.3 volt zeners are fine - in addition 
the forward diode tends to damp the meters some as they are pretty undamped.
Hank K7HP

> Most meter coils drop less than 0.1 volt so 3.3 volt zener's aren't much
> protection. Better to use 1N4001 single junction silicon diodes, two in
> parallel opposite polarity. They won't leak any current until the drop
> gets up to about .55 volt.
>
> 73, Jerry, K0CQ
> > 73 de hank K7HP
> >
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From:<w7ju@cox.net>
> > To:<tentec@contesting.com>
> > Sent: Wednesday, December 15, 2010 3:45 PM
> > Subject: [TenTec] Centurion 422
> >
> >
> > > I had a 3 500Z  Gas and blow a line fuse.  Replaced the one tube.  On 
> > > turn
> > > on in standby plate voltage is 3100 but show .2 ma plate current.
> > > Suggestions?
> > > Thanks
> > > Ralph   W7JU
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec