[Hallicrafters] air variable capacitors

ANTHONY CASORSO canthony15 at msn.com
Thu Dec 6 18:11:40 EST 2007


It looks to me like centered plates give you the minimum capacitance but the 
maximum breakdown voltage. Moving the plates either side of center will 
increase the capacitance and reduce the breakdown voltage.

Tony

>From: Ginger Harris <elvispharris at rtmc.net>
>To: Hallicrafters at mailman.qth.net
>Subject: [Hallicrafters] air variable capacitors
>Date: Thu, 6 Dec 2007 17:43:06 -0500
>
>Since everything is so quiet, I might as well ask a question.  Is it  safe 
>to assume that  in a receiver, the rotors are always centered  between the 
>stator blades at the factory?  Could there be an  exception among  those 
>big spaced capacitors of the 1920s?  It seems  that off center spacing 
>would increase the capacitance a little.  I  am puzzled.  Thanks and an 
>early Merry Christmas,   JP    KI4ZVX  
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