Re: "Enhanced" Drain Resistors :-))

• To: tesla-at-pupman-dot-com
• Subject: Re: "Enhanced" Drain Resistors :-))
• From: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 23 May 1999 20:21:25 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

to: Terry

Carbon and metallic film resistors are not rated at all for power
applications.  You need to use carbon comp resistors for power applications.

Regards,

Dr.Resonance


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Sunday, May 23, 1999 3:05 AM
Subject: "Enhanced" Drain Resistors :-))


>Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
>
>Hi All,
>
>Reinhard wondered about the drain resistors I use being overloaded.
>
>I use YAGEO Carbon Film CR-50  1/2 watt 5% 10m Ohm resistors (Digi-Key
>10MH-ND  $12.87/1000 ).
>
>I wired one across one of my 56nF 1600 volt caps and ran the voltage up.
>At around 4000 volts it started to turn brown and smoke a little (~2
>watts).  At 5300 volts, it gave a very nice CRACK!! and arced along its
>outside surface!  It now measures as 11.1 Mohm.  I think they are pretty
>good but obviously underrated :-))
>
> Terry
>

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