[Amps] Drake L-4B PSU burned resistor

[Steve Thompson]

>>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