>
>Ian says;
>
>>The practical problem about having the glitch resistor in the
>>B-minus return is therefore the need for high-grade insulation
>>at *both* ends of the capacitor stack.
>
>If you happen to have bi-phase rectification or choke input with negative
>lead
>filtering, then the transformer and/or choke insulation need checking as
>well as
>the cap stack.
>
>Aren't there advantages to a fuse, though? (personally, I use both - fuse
>will
>go at about 2 amps, but there's alimit to the amount of current it has to
>interrupt)
>
The trouble with HV fuses is that they do not limit current until after
they have opened and the metal vapour arc has extinguished. On the other
hand, a proper glitch R limits current to a safe value without the need
for replacement. The cost is 10 - 20 v of B+.
end
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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