| Electronics > Projects, Designs, and Technical Stuff |
| It looks for me as stupid schematic (Oldtimers welcome!) |
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| 001:
Great idea! :-+ |
| 001:
--- Quote from: Yansi on October 12, 2019, 09:59:05 am ---Too small Vg2 and you can't pass enough current through the pentode. Too high Vg2 and you need silly voltage swing at the control grid from 0 to -Vcutoff voltage, from fully open to close the tube completely. Silly voltage swing at the control grid means you need even more gain in the control loop of the regulator, resulting also in poor regulation. By changing the Vg2, you can affect the control grid cutoff voltage like 10:1 ratio (from -100V to -10V). --- End quote --- Can You describe this effect more? (some practic links will be ok too :-//) My disturb is about 2nd grid destroy Is 2nd grid CURRENT rise then 2nd grid voltage more then drop voltage at pass tube? I.e. low drop = damage with 2nd grid. isnt`it? :-// |
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