>>This requires a larger resistor - such as a 10W surge protection type
>>of approximately 10 to 15 ohms.
>
>
> The 10 or 14 watt ones commonly available from the big UK supply houses
> are wire wound vitreous enamel types, with a maximum voltage rating of
> only 500 or 750v. I guess I'll need several of these in series, not so
> much for the power rating as for a breakdown voltage safety margin.
> Messy, but just doable within the rather cramped confines of the L-4B
> PSU.
Vishay do a 'bolt down' 50W resistor which lists:
Dielectric strength 3500V rms
Limiting ekement voltage 1285V rms
Maximum overload voltage 2500V rms
There's overload and pulse ratings in the data.
http://www.farnell.com/datasheets/1568.pdf for full data.
UK price from Farnell, £2.63 ($4ish).
Steve
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