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B12NC/B15NC Schematic

October 18th, 2009 Leave a comment Go to comments

I finally got around to redrawing my B15NC schematics, something that I have been wanting to do for quite awhile.  I have redrawn 3 different versions of the NC schematic, which are shown here.  These drawings are based on originals that I have, and I have tried to replicate the original’s appearance as closely as I could.

The first is dated 1/64.  This is an early NC schematic and does not have circuit voltages shown on it yet.

B15NC Schematic 1/64 (PDF)

The second is dated 11/64.  It has various voltages shown in the circuit, and there have been a few capacitor additions and deletions.

B15NC Schematic 11/64 (PDF)

The third is dated 9/64.  It is the same as the 11/64 schematic except for the center tap on the hum control pot.  Rather than attaching to point “K”, this symbol has been marked over by hand and changed to a ground symbol.

B15NC Schematic 9/64 (PDF)

Because of the size of the original schematics, these drawings are formatted to be printed on 8.5″ x 14″ paper.  When printed, they should be the size of the originals, as long as no resizing occurs within Adobe Acrobat.

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