Thank you for your detailed comments! :tu:
Quote from: J M Fahey on July 20, 2014, 06:07:06 AMOK, I added labels to the Lissovoy schematics. Now that schematic is labeled consistently with the other ones on the web site. I labeled components and also the pads for offboard wiring.
*Please* label schematic (Lissovoy's or any other) with parts designations (R1 ... C1 ... etc.)
Quote from: J M Fahey on July 20, 2014, 06:07:06 AMOoops: OK, corrected.
You mean 220nF = 0.22uF .
Quote from: J M Fahey on July 20, 2014, 06:07:06 AMI can't believe there are no online sources where transformers of this kind can still be found... I think the best approach here would be to experiment with different transformers that *might* be suitable (however, I need suggestions on what might be suitable).
5) those transformers *used* to be easily available in the "big" catalog sales Companies ..... in the early 70's.
Anyone remember Lafayette Radio?
http://en.wikipedia.org/wiki/Lafayette_Radio_Electronics
Then they became obsolete and could be found for peanuts in large "pick 5 for 1 $" surplus/obsolete parts in Electronics shops.
The kind you actually drive to and walk in .
Yes, there was such a kind ... long ago.
Nowadays they are most certainly OEM custom wound.
Quote from: J M Fahey on July 20, 2014, 06:07:06 AMThere are many old transistor radios on ebay. They are not expensive, so this might be a way to go. However, again, I would need suggestions on which old transistor radios might contain transformers I could experiment with. I added to the web site http://sites.google.com/site/pignose7100 pictures that maybe can help give suggestions.
legend says that the first Pignose was just that, a preassembled Lafayette Radio "transistor amp" module, go figure.