[AMPS] Load C as last resort safety

[Rich Measures]

>
>Others have written:
>
>>>the rf safety choke is there for a definite safety reason---to blow from
>the
>>>dc supply gitting thru the plate blocking cap--check it--bet it shorted.
>>>new call w5set.
>>
>
>And then Rich added:
>
>
>>When the DC blocker fails without a "safety choke" being present, the
>>Load C itself acts as a protective spark gap, arcs,  and shorts the HV to
>>ground.
>
>
>My question: How long would it take a 10 ohm 10 watt high voltage safety
>"fuse" that is in the B+ line to open in the event the plate bypass cap did
>short and the load C saw the full anode potential?

€  Hopefully never.  The glitch R is not a safety fuse.  There should be 
no circumstance where a glitch R opens.   Ideally, the glitch R limits 
peak current until the primary fuse/circuit breaker opens.  If a glitch R 
sustains damage during a glitch, using a more formidable glitch R is 
indicated.  //  The main reason to put a choke across the output is to 
bleed off DC charge on the feedline.  

-  cheers, Lane
>
>Just curious. Wonder how dangerous this is to the operator other than the
>gun shot loud POP that happens when the resistors open scaring the hell out
>of the unsuspecting ham (in this case Ku7i).
>
>Lane
>Ku7i
>
>
>
>
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>


-
-  Rich...
R. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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