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Amplifying stage with resistance coupling
Amplifying stage with transformer coupling
B Phase inverters and splitters
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alternating anode current alternating current amax amplitude anode load average anode current calculated cathode resistor Class B amplifier Class B operation Class B push-pull connected as triodes control grid direct current driving voltage dynamic characteristic example factor formula full drive function fundamental wave gives grid base grid bias grid current grid voltage heater ijva characteristics ijva curves impedance increase input power input signal input voltage internal resistance Kmed load line load resistance loudspeaker maximum output maximum permissible anode mutual conductance normally obtained occur operating conditions operating in Class optimum load optimum value output valve output voltage parameter pentodes EL 34 pentodes type permissible anode dissipation practical primary push-pull output stage represented in fig reservoir capacitor screen-grid voltage second harmonic secondary secondary emission self-inductance supply voltage Vb third harmonic triodes in Class type EL 34 valve characteristic VIII Wamax whilst