• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

European Triode Festival 2005

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nuvistor

nuvistor

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Joined 2004
Upupa Epops said:
I know, where is each time constants in this connections.... ;) And output impedance is added into upper resistor, isn't it thruth ?
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Output impedance of common cathode triode amplifier with zero cathode-to-ground impedance is parallel combination of plate load resistor and triode's internal plate resistance, or Rp//rp, Steve surely accounted for this in his design, you may not have accounted for rp in your calculation.
 
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