Amps
[Top] [All Lists]

[AMPS] Re:(AMPS) sb-200 troubles

To: <amps@contesting.com>
Subject: [AMPS] Re:(AMPS) sb-200 troubles
From: measures@vcnet.com (Rich Measures)
Date: Wed, 11 Aug 1999 13:15:33 -0700


>
>> 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.  
>
>If that is intended to be advice that the safety choke is not needed, 
>it is very bad advice.
>
>Blocking capacitors don't always fail shorted, they can fail with 
>leakage. 
>
>Not only that, normal charging current will change up the tank 
>capacitors and that can damage other components in you station, 
>or give you a nasty bite. It also can cause capacitor arcs because 
>the tank capacitors have dc bias as well as RF, increasing peak 
>volts.
>
>ALWAYS use a safety choke (unless your name is Dr. Nate).
>
?  is this Fractenna-guy on the rec.radio.amateur.antenna Newsgroup?


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


--
FAQ on WWW:               http://www.contesting.com/ampsfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm


<Prev in Thread] Current Thread [Next in Thread>