Re: HV Resistors
Subject: Re: HV Resistors
From: mrbarton-at-ix-dot-netcom-dot-com (Mark Barton)
Date: Wed, 24 Jan 1996 01:29:33 -0800
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If you use resistors in this way to measure HVAC or HVDC (as I do as well)
please BE VERY CAREFUL. You are hooking up something from a death machine
directly to your test equipment which you touch with your own conductive
flesh. Make sure the R from the HV is adequate to the task, especially with
regard to voltage withstand. You DEFINITELY do not want it arcing over. Make
sure the R to ground is VERY RELIABLE. I use many 2-watt carbon comps in
parallel to make an ultra-reliable resistor. Remember: Too much paranoia in
this area is still not enough.
And I still touch the test equipment with HV rubber gloves. Those electrons
go everywhere ya know.
>> In my never ending quest for components, I have come across some
>> resistors. These resistors were originally in a 30 KV DC power
>> They are 40 Megaohms( or was it 400) in value. They were about
>> diameter by 8" long. I regret I didn't get them when I found them. Can
>> anyone think of a purpose that we might use these for?
>They could have been used as part of a voltage divider circuit to
>monitor the high voltage. I have some large resistors from an old xray
>generator that were used for that purpose.
>Steven Roys (sroys-at-radiology.ab.umd.edu)