>
>On Mon, 4 Mar 2002 22:02:43 +0000 "Ian White, G3SEK" <G3SEK@ifwtech.com>
>writes:
>
><snip>
>
>Hi Ian,
>
>> Can we identify a specific range of US-made resistors, for the
>> record?
>
> Here are some real pulse rated types... not just ceramics that (may)
>happen to survive the event.
>
> Kanthal Globar (who acquired the Carborundum product line) makes a good
>assortment -- their resistors are rated for both pulse voltage and
>energy. Take as look at the AS parts.
>
> Ohmite has a new line that would be suitable for the application with a
>pair in series -- look for the AY & AZ prefix
>
? To test a glitch resistor, short the HV+ to gnd. [Before doing this
test, install suitable glitch diodes across the meters and across the
grid current and anode/plate current shunt resistors] The glitch
resistor should not exhibit physical damage or a change in R. If the
glitch resistor does pass the test, discard it, install two such
resistors in series, and repeat the test.
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
|