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[AMPS] IRC 0.82 Ohm for L7

To: <amps@contesting.com>
Subject: [AMPS] IRC 0.82 Ohm for L7
From: K0FF@ARRL.NET (K0FF)
Date: Fri, 19 May 2000 05:39:50 -0500
Right Jaime, and furthermore when installing a resistor in such service it
should be placed so that there is tension on the leads that will tend to
separate it when it goes, rather than to compress it.  There is a name for
that and even a schematic symbol, but I can't recall it right now.

Geo>K0FF
-----Original Message-----
From: measures <2@vc.net>
To: Jaime P.Ullívarri <EA6NB1@teleline.es>; AMPS <amps@contesting.com>
To: <amps@contesting.com>
Date: Thursday, May 18, 2000 8:12 PM
Subject: Re: [AMPS] IRC 0.82 Ohm for L7


>
>>
>>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
>
>
>--
>FAQ on WWW:               http://www.contesting.com/ampsfaq.html
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>
>


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