[AMPS] IRC 0.82 Ohm for L7

[measures]

>
>Hi all,
>I need some help, I have to replace R12 resistor from L7 PS, this resistor
>is at the HV output to protects the PS diodes at the event of a short
>circuit. At the L7 manual says : replace only with "IRC 0.82 Ohm 2 Watt type
>BWH resistor" only. I don't know what type it is and I can not find any
>similar here and neither at the Drake's Parts Web
>http://www.rldrake.com/tech/parts/partshtml/partslist.html
>
>May I use a common resistor or other easy to find here, or just replace it
>for a Fuse?.

You need to have a resistor to limit peak fault current that does not 
explode under fault conditions.  .  I would use a glass-coated 10-ohm, 
10w.unit.    A resistor that explodes with a metal-vapour arc does not do 
the job.  For more than 2800v, I put two in series.  Special 
energy-absorbing resistors are more durable but the cost is about 10db 
more.  
>
cheers,  Jaime EA6NB
>
>
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>
>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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