That is for a glitch - the resistor limits the current in the even the tube
(or whatever) arcs and dumps the B+ to ground. The caps will discharge
through that resistor.
I went through that sourcing a couple of months back. Check out the ohmite
power resistors - about 4" long vitreous enamel covered 50w, if you have the
room. Should do the job.
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie
-----Original Message-----
From: Drax Felton
Sent: Tuesday, April 16, 2013 11:06 PM
To: 'Jim Garland' ; Amps@contesting.com
Subject: Re: [Amps] HV resistor source
So then what is the Radio Handbook talking about where it uses a 10ohm/20w
one between the plate choke and the +HV?
-----Original Message-----
From: Jim Garland [mailto:4cx250b@miamioh.edu]
Sent: Wednesday, April 17, 2013 12:04 AM
To: 'Drax Felton'; Amps@contesting.com
Subject: RE: [Amps] HV resistor source
That's going to be quite a resistor, inasmuch as 4KV across a 30 ohm
resistor amounts to a half million watts of dissipation! A 4KV pulse 50uS
wide, once per second, would dissipate 25W.
73,
Jim W8ZR
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Drax Felton
Sent: Tuesday, April 16, 2013 9:53 PM
To: 'Amps'
Subject: [Amps] HV resistor source
So where does one find a 30 to 50 ohm 25 watt resistor that can safely
handle 4000v?
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