On Fri, 19 Mar 1999 00:35:31 +0000 "Ian White, G3SEK"
<G3SEK@ifwtech.demon.co.uk> writes:
>
>Carl wrote:
>>
>>
>>
>>On Thu, 18 Mar 1999 15:48:44 -0000 Peter Chadwick
>><Peter_Chadwick@mitel.com> writes:
>>>
>>>Could it be that you have a 'flash arc' or 'Rocky Point effect'?
>>>Although
>>>the voltage may be considered low for a glass tube, the effects you
>
>>>describe
>>>fit the description.
>
>>An arc in a vacuum would not go BANG.
>>Neither would the opening of a 2W resistor.
>>
>>Sounds like a HV breakdown to me that is external to the tube.
>
>There could have been a silent arc inside the tube, with the bang
>coming
>from the resistor. IMO a 2W resistor standing in the way of a
>near-short
>across the HV supply is very likely to exit with a bang!
I take it that you are not familiar with the SB-220 circuit. The
resistor in question is not in the HV path at all.
73 Carl KM1H
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