[AMPS] Two stupid questions

[2]

>
>Jim: yes you can parallel strands of nichrome, for more current capacity,
>BUT, you will lose the resistance of the wire the same as paralleling
>resistors, thereby losing the resistance advantage of the wire in making
>your suppressors!!!

//   Good point, Carl.   However, the suppressor's inductor -  L-sup) - 
must be able (without melting the silver-solder) to carry the portion of 
the tank circulating current that passes through the tube's anode-C  at 
28MHz.  This current can cause a substantial amount of I^2R heating in 
conductors.  In the 8169 amplifier on my Web-site, on the HV tap, this 
current is c. 18Arms - the heating equivalent of c. 70A at 60Hz.    

cheers

>----- Original Message -----
>From: "Jim Strohm" <jstrohm@texas.net>
>To: <amps@contesting.com>
>Sent: Saturday, November 24, 2001 1:51 AM
>Subject: [AMPS] Two stupid questions
>
>
>>
>> No, not really stupid questions.
>>
>> Just two questions I haven't asked before.
>>
>> #1
>>
>> Let's say I had a whole bunch of 0.1 uF disk capacitors, all the same size
>> and all rated at 5 kV.  Is there any reason I couldn't make a 5 kV
>> capacitor bank for an HV supply filter by putting them all in parallel?
>> Naturally, my PCB would need to be designed for the voltage, and made from
>> a material that would withstand said voltage.  Naturally, I would have an
>> adequate total capacitance for the application, say 20 uF plus.
>>
>> #2
>>
>> Let's say I wanted to duplicate Rich's nichrome wire transient
>suppressors,
>> but I didn't have any large-gauge nichrome wire.  But I did have an old
>> spool of #26 nichrome.  Is there any reason I couldn't twist a large
>number
>> of strands tightly together to make a conductor of the appropriate size?
>> The ends of the finished conductor would be silver-soldered together, but
>> not the body of the wire, so it would maintain its conductivity as
>nichrome.
>>
>> Jim N6OTQ

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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