I could just bookmark these in my browser, but hey... here they are. If you struggle with complex explanations of how valve amplifiers work, here's a collection of easy to understand valve amplifier basics from Uncle Doug.
Don't let the pets and other distractions put you off - there's really good information in these videos.
Phase Inverters
Output Transformers
Power Transformers
Power Supplies
Triodes & Pentodes
Single-ended amplifier biasing
Double ended biasing (push-pull)
Quad biasing
Cathode Bypass Capacitors
Negative Feedback
Tone Stacks
Resistors
Introduction
Power & wattage requirements
Grid leak, grid stopper
Cathode bias resistor
Plate resistors
3 comments:
The videos on Phase Inverters that he made were of great help to me. It was after watching his videos that I gained the confidence to design and build a Hiwatt 103 speaker by myself, using circuit diagrams.
Wow - a 103 is a monster. Impressive.
Now this was exactly what I was looking for. Cheers Andy for putting this lot together
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