[AMPS] Layout Question: Metal Near C-load???

[Jon Ogden]

Howdy all and Happy New Year,

OK, got a question for some of you seasoned amp builders.  I am at long 
last beginning the rebuild of my 4-1000 amp.  To refresh your memory, I 
am having to deal with the housing and mechanics of someone else's 
design.  The old tank circuit design was not at all stable and as I have 
discovered, the C-load was not the correct value either.

The C-tune is a Jennings vacuum variable and it mounts above the C-load.  
I spent yesterday building a bracket for the C-tune but realized today 
that the bracket interferes with the plates of C-load.  C-load is mounted 
on the floor of the amp cabinet and as the knob is turned the plates 
rotate upward (z-axis) and reach a maximum height at half capacitance.  
This is when my problem occurs.

I have an idea for changing the bracket design so as to eliminate the 
interference.  However, part of it still will come within about 0.25" to 
0.5" of C-load's plates when the height of the plates are at their 
maximum height.

My question is:  Is this too close for metal to be coming near the plates 
or is it OK?  I don't want any surprises when I power the thing up.

Thanks es 73,

Jon
KE9NA



-------------------------------------
Jon Ogden
KE9NA

http://www.qsl.net/ke9na    <--- CHECK IT OUT!  It's been updated!!!!!


"A life lived in fear is a life half lived."


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