7 hours ago
I haven't posted the schematic in a long time. At long last, I am done with it. I've got two versions I will upload. The first version I've called Rev 0. In this revision, all I have done is digitize the original Philco schematic and make the necessary edits to reflect production run 9 (since that's the production run I have). This is also the final production run, so it's probably a good version of the schematic to upload for others to use, so that they can start from here.
The second version of the file I've called Rev 1. In this revision, I've added a polarized plug, moved the on-off switch to the live side of the 117 VAC primary circuit, and inserted a 1A fuse. I've also updated the values of a few of the capacitors to reflect the closest replacement values I could get (0.47 μF for C102 instead of 0.5 μF, as an example).
I've denoted the revision in the file name, as well as in the title block of the drawing. I also added revision blocks, to keep a running list of all updates to the drawing.
One final detail which I included was the wafer switch detail. I had to recreate it from scratch since this detail was blurry on the original Philco schematic.
The second version of the file I've called Rev 1. In this revision, I've added a polarized plug, moved the on-off switch to the live side of the 117 VAC primary circuit, and inserted a 1A fuse. I've also updated the values of a few of the capacitors to reflect the closest replacement values I could get (0.47 μF for C102 instead of 0.5 μF, as an example).
I've denoted the revision in the file name, as well as in the title block of the drawing. I also added revision blocks, to keep a running list of all updates to the drawing.
One final detail which I included was the wafer switch detail. I had to recreate it from scratch since this detail was blurry on the original Philco schematic.
Joseph
Philco 46-480
Philco 49-906