>
>Tom,
>
>>On the other hand if the grid in a triode is floated through a
>>resistance any HV faults in the tube would be passed right along to
>>the filament/cathode circuit, yet that is supposed to be a "good
>>idea".
>>
>>Odd.
>
>You're forgetting that the only HV faults that ever appear are because of
>parasitics!
>
> 73
>
>Peter G3RZP
>
The only things that defile a man come from his own mouth.
end
>> ----------
>> From: Tom Rauch[SMTP:w8ji@contesting.com]
>> Reply To: W8JI@contesting.com
>> Sent: 30 November 2000 12:41
>> To: g3sek@ifwtech.com
>> Cc: amps@contesting.com
>> Subject: Re: SV: [AMPS] SB-220 Glitch Resistor ???
>>
>>
>>
>>
>> Date sent: Thu, 30 Nov 2000 09:43:08 +0000
>> To: amps@contesting.com
>> From: "Ian White, G3SEK" <G3SEK@ifwtech.com>
>> Send reply to: "Ian White, G3SEK" <g3sek@ifwtech.com>
>> Subject: Re: SV: [AMPS] SB-220 Glitch Resistor ???
>>
>> >
>> > Wilbert Knol wrote:
>> > >
>> > >
>> > >> With the glitch R in the negative return, the cathode circuitry may be
>> > >> driven to several kV by a B+ to chassis arc.
>> > >
>> > >Good point.
>> > >
>> > >I don't like the idea of most of the HT appearing across the filament
>> > >transformer secondary...
>> > >
>> > Does it?
>>
>> The same fellow who always proclaims a "glitch resistor" in the grid
>> is a good idea, now finds fault with a resistor in the B-.
>>
>> A glitch resistor in the B- only would cause the negative terminal at
>> the HV rectifier and filter cap junction to go up towards HV + rail,
>> everything on the chassis and cathode side of the resistor could be
>> fully clamped to ground and remain so just as a resistor in the HV
>> line would allow. It would make no difference at all!!!
>>
>> On the other hand if the grid in a triode is floated through a
>> resistance any HV faults in the tube would be passed right along to
>> the filament/cathode circuit, yet that is supposed to be a "good
>> idea".
>>
>> Odd.
>>
>>
>> 73, Tom W8JI
>> w8ji@contesting.com
>>
>> --
>> FAQ on WWW: http://www.contesting.com/FAQ/amps
>> Submissions: amps@contesting.com
>> Administrative requests: amps-REQUEST@contesting.com
>> Problems: owner-amps@contesting.com
>>
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
>
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
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