SV: [AMPS] SB-220 Glitch Resistor ???

[measures]

>
>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
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com