nikongod, Let me just say a few things that were discussed between John Iverson and I before he had gone missing. It was at a CES show, I was in his room talking about amplifiers and the LM317. He said something that caught my attention. It was about class AB and how the answer is in that...

nikogod, Sorry I do not know if your addressing me or someone else here. But if you are, then it is very intriguing what your saying about the LM317 when used as an amplifier. I never considered using a transformer with it. I always built power followers as can be seen in my picture. This was...

Mr T Thanks for responding privately by E-mail. Here are the pictures you asked for. This is one of the first LM317 K Amplifiers, we keep it upgraded here with the new caps and transformers. We use this amp everyday playing music of all kinds, it is sort of are reference amp. The only rival...

Wakibaki, Thanks for posting that information. Yes this is one chip not to underestimate at all. Again thanks for posting that information. I will suck it all up and I have seen Elvee amp over at diyaudio. Just thought I would add a little history, and if John Iverson was around today he would...

MR T   There was allot I did not say to you on the phone about LM 317 Amps. The Regulator first appeared in 1970, it was invented by Robert C. Dobkin and Robert J Widlar in 1970 while working for National Semiconductor. This chip was the most under rated chip ever. After my military service in...