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Author Topic: CQ Magazine 1955: Improving the Class B Driver  (Read 41386 times)
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Steve - K4HX

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« on: March 26, 2021, 11:09:51 AM »

See attached article for a cathode follower driver for 810 triodes.

* Improving_the_Class_B_Driver.pdf (3551.25 KB - downloaded 624 times.)

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This ham got his ticket the old fashioned way.

« Reply #1 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:

Feel free to move my thread to the Audio category if appropriate.

Rick / W8KHK  ex WB2HKX, WB4GNR
"Both politicians and diapers need to be changed often and for the same reason.   Ronald Reagan

My smart?phone voicetext screws up homophones, but they are crystal clear from my 75 meter plate-modulated AM transmitter
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