[Amps] Grid fuses (was: Life and gain of 3-500Z)

[Bill Turner]

ORIGINAL MESSAGE:

On Tue, 18 Jul 2006 18:57:55 -0700, you wrote:


>> What is the fusing current rating of the resistor? Why would
>> you fuse a grid?
>
>Because 0.25w carbon-film resistors cost less than 3-500s.

------------ REPLY SEPARATOR ------------

I'm a bit late getting into this discussion, but my curiosity has been
aroused.

Two questions:

1. Why not use a real fuse? There are some micro-miniature fast blow
fuses available which would not add much lead inductance, if that is a
consideration.

2. If the fuse blows, you wouldn't want the grid to be floating I'd
think. Do you parallel the fuse with a high value resistor to maintain
DC continuity?

Bill, W6WRT