Tube DIY Asylum

Posted by 1973shovel (A) on December 29, 2018 at 04:50:51

In Reply to: RE: Looks to be Dave Gillespie's "Enhanced Fixed Bias" circuit... posted by xaudiomanx on December 28, 2018 at 16:08:34

As Steve O and Triode Kingdom have said, and as I suggested in our private correspondence, the EFB is regulated bias, but it isn't as simple as "just" regulated bias.

Also as they suggested, you may want to take a second look at Gillespie's article from that link I sent you last week, and re-read pages 5 through 8. I think you'll find it informative as to what his circuit does. The EFB schematic alone doesn't tell the whole story. (link to article below)


"Suddenly, I'm not half the man I used to be. 'Cause now I'm an amputee" J. Lennon

• Improving Dynaco's SCA-35 & ST-35   (Open in New Window)