B12NC/B15NC Schematic
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.
The second is dated 11/64. It has various voltages shown in the circuit, and there have been a few capacitor additions and deletions.
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.
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.