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AMfone's Online AM Handbook => Audio => Topic started by: Steve - K4HX on March 26, 2021, 11:09:51 AM



Title: CQ Magazine 1955: Improving the Class B Driver
Post by: Steve - K4HX on March 26, 2021, 11:09:51 AM
See attached article for a cathode follower driver for 810 triodes.



Title: Re: CQ Magazine 1955: Improving the Class B Driver
Post by: w8khk on March 26, 2021, 01:32:05 PM
Steve, that is an excellent reference.  I used a similar technique for driving a quad of 1625s in AB2, but used RC coupled audio amplifiers and a phase inverter instead of the driver transformer.  The results are stellar!  Thank you for your post!

Link to my project which shows a very similar technique with the 6SN7 cathode follower:
http://amfone.net/Amforum/index.php?topic=46696.0

Feel free to move my thread to the Audio category if appropriate.
AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands