High Voltage Test Equipment

• To: "'Tesla List'" <tesla-at-pupman-dot-com>
• Subject: High Voltage Test Equipment
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sun, 8 Mar 1998 16:37:20 -0600
• Approved: tesla-at-stic-dot-net

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From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Sunday, March 08, 1998 3:39 PM
To:  Tesla List
Subject:  Re: High Voltage Test Equipment

Hi Terry,

> From:  terryf-at-verinet-dot-com [SMTP:terryf-at-verinet-dot-com]
> Sent:  Thursday, March 05, 1998 11:21 PM
> To:  Tesla List
> Subject:  Re: High Voltage Test Equipment
> 
<snip>

> >
> >
> 
> Hi Jim,
> 
>         My latest voltage divider is 1 inch long!  I thing you and I will
> have the length extremes covered :-))  1/8th watt surface mount resistors
> are typically rated for 400V max.  However, in oil, I would push that to
> 4KV!  (I used to build the damn things).

The voltage ratings associated with film resistors has to do with 
internal arcing ruining the resistive material, not flashover 
voltages or heating. I am currently getting in a rash of monitors for 
repair with the same problems (all the same make surprise surprise!) 
because as with so many designs, they have used a single 1/2 W 
resistor to provide starting current for the SMPS from a 330V rail. I 
am kept employed by people who use these techniques :)

Malcolm

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