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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: You call it posted by Steve O on November 11, 2021 at 12:43:03:
The G1 connection in that schematic is made through a 20K ohm resistor. That means once the driving signal goes positive, the control grid draws current and quickly saturates. That leaves only the screen as a variable control element over the remainder of the cycle. Also, whenever the input signal approaches the zero line, the tubes cut off hard due to lack of screen voltage. I doubt that the curves or performance this produces even remotely resemble a triode.One other thing - Modulators are typically used to amplify only voice frequencies between 300 Hz and 3 kHz. That narrow range allows the use of filtering that greatly reduces the harmonic content and reduces the audible effects of distortion for purposes of communication. This is why so many modulators can operate in class B and take advantage of the additional output power.
Edits: 11/13/21
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- I call it a modulator - Triode_Kingdom 15:14:54 11/13/21 (0)
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