For decades Ive been replacing RFC-2 with a 15-25 Ohm 20-25W real enamel
wirewound. Works great and there are no voltage problems; they take arc
surges very well. Do not use a cement resistor.
The last thing Id use would be one of those metal encased resistors. One
good zap and youve got shrapnel plus a blown PS. Dust accumulation wont
----- Original Message -----
From: "Steve Thompson" <firstname.lastname@example.org>
Sent: Monday, September 08, 2008 4:13 AM
Subject: Re: [Amps] 3-500Z glitch resistor
>> Everyone seems to agree that a glitch resistor between the plate
>> and the HV supply is a good idea, to limit huge current surges due to
>> arcs caused by gas, etc. But recommendations for the value seem to
>> all over the map.
> I like the look of Vishay RCH series or similar (Tyco do an
> equivalent). The 50W version is rated at 5.5W without heatsink and
> is specified to handle 2500Vrms (that's 3500V peak) short term
> overload. If you want to bolt it to a panel for heatsinking, the
> insulation is rated for 3500Vrms (5kV peak).
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