[Amps] Glitch resistors

[Richard]

>>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.
>
>Erm, correct me if I'm wrong but doesn't this test method end up
>with an exponentially larger and larger pile of resistors in the trash bin
>:-)
>
€  The right one for the job passes the test unscathed.  A typical 3-500Z 
amplifier PS will not damage a 10 - 15 ohm 10w glass-coated resistor in 
the screwdriver to ground test.

-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
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