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
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.
ReplyDeleteWow - a 103 is a monster. Impressive.
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