[Boatanchors] HV fusing in amplifiers

[J. Forster]

That's a fuse to go in the primary circuit of a pole pig. The source is a whole lot stiffer than anything you can come up with on the secondary of a plate transformer. It has the whole grid behind it.

-John

Rbethman wrote:

> Group,
>
> Has anyone thought about high voltage fusing in an amplifier or "old" BA?
>
> Usually there is a choke in the RF output leg to ground, in the event that the plate blocking cap fails.
>
> Yes, we usually have power supply fuses or circuit breakers.  BUT - what will get fried?  How do you protect all that?
>
> I've got ONE HV fuse by GE.  Its design voltage is 2400V.  It is rated at 7A, which is obviously a ridiculous value.  HOWEVER, even IF it was a reasonable current rating, it is HUGE!  It is 11" long and 2" in dia.
>
> Where in the world would you even mount it?
> --
> Bob - NØDGN
>
>