[Boatanchors] Fusing Secondaries on Boatanchor Gear

[Donald Sanders]

This keeps high voltage off the fuse under normal
operating conditions.

Healthfully yours,
                          Don W4BWS
----- Original Message ----- 
From: <revcom at wbsnet.org>
To: "Frank S." <wb2tdt at yahoo.com>
Cc: <boatanchors at mailman.qth.net>
Sent: Thursday, November 15, 2007 1:53 PM
Subject: Re: [Boatanchors] Fusing Secondaries on Boatanchor Gear


> Common practice in industry is to fuse the center tap of power
> transformer to ground, or ground return leg.
>
> Rod
>
>
>
>
> > Hello to the list,
> >
> > I have several BA receivers in various stages of
> > restoration. I am always concerned about safety and
> > add line fuses and 3 wire cords.  I am also concerned
> > about protecting the components and tansformers in the
> > gear which brings me to my question for the list.
> >
> > I am interested in fusing the transformer secondary
> > leads B+ and filiment to protect against damage should
> > a failure occur. I am unsure how to select the proper
> > fuse for the B+ as I dont recall the stadard glass
> > fuses having DC voltage ratings. Would a 250VAC glass
> > fuse with the same current rating for my application
> > provide protection at say 150-200V B+ or is there a
> > calcualtion one can use to aid in selecting the
> > correct fuse for DC?
> >
> > Thanks and 73,
> >
> > Frank
> >
> >
> >
> >
> >
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> $ For vintage radio info, see the HCI web site $
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>
>