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Antique Radio Technical Forum
Powering a King 10K1 Neutrodyne

Posted by Norm Leal on 04/02/2009 16:40

Hi Craig

Not all buyers of radios used C batteries. When a person didn't use a C batterey C- was connected to A-.

Without a C battery more current will be drawn from the B battery. When higher voltage B batteries are used even greater negative C voltage are needed.

Best to use 3 penlight batteries for the C supply. No current will de drawn so batteries will last their shelf life.

Norm

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:Refer to the green buss markup on the Reference schema below.
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: Indeed, that last mentioned supply is the C bias source and is responsible for the 1st grid biasing of the last two audio tubes in
:your sets receiver tube complement.
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:Look at the different B+ supplies routings flow and you will see that the +45 is the supply level for the 1st audio /detector stage
:of the unit.
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:73's de Edd

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:KING_Model 10K. . . . . . MARK-UP SCHEMATIC :
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Powering a King 10K1 Neutrodyne 
Craig Roberts 04/02/2009 12:17 
Lewis L 04/02/2009 12:29 
Craig Roberts 04/02/2009 13:00 
Edd 04/02/2009 14:59 
Norm Leal 04/02/2009 16:40 
Craig 04/02/2009 22:05 

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