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Re: [Amps] Amp Design Question...

Subject: Re: [Amps] Amp Design Question...
Date: Sat, 14 Feb 2009 07:53:00 EST
List-post: <">>
Scott, that symbol is for a high voltage feed through assembly. The  
capacitor  is formed by metal plates on each side of the rf enclosure with  
dielectric insulating them from ground.
Gerald K5GW
In a message dated 2/13/2009 11:23:13 P.M. Central Standard Time, writes:

Looking  around the web tonight for 6m amp designs using the GI-7B and i came 
across  this  schematic...

I  understand the schematic except for one thing..  At the top middle where  
the connection for +Va is shown it comes down to a second connection point and 
 then it shows a ground to the left and a connection to what appears to be a  
large cap to the right, i assume its a capacitor as that makes the most sense 
 but these foreign guys use different symbols for stuff sometimes.  Why is  
that second connection point with the (o) and a ground connection to each side  
there?  Seems to be a dead short for the HV.

He also doesn't  mention what the value of this capacitor labeled as Ca 
should be.  I  know, this could be a stupid NOOBIE question but these foreign 
designs are  always so sparse on the information and there is hardly any 
explanation,  etc..

I like his design overall though, looks fairly simple, thinking i  could do 
my SB-200 conversion so its a 6m/2m amp in one.  If anyone has  built one of 
these please pass along any info you have!  A picture says  ten thousand words 
for  me.



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