Vacuum Tube Formulas and Symbols

Vacuum Tube Constants
	Amplication factor (Mu or u) is given by

	Dynamic plate resistance in ohms, is given by

	Mutual conductance in mhos, is given by


Vacuum Tube Formulas
	Gain per stage is given by

	Voltage output appearing in R_L, is given by

	Power output in R_L, is given by

Maximum power output in R_L which results when R_L = r_p, is given by

	Maximum undistorted power output in R_L which results when R_L = 2r_p,is given by

	Required cathode biasing resistor in ohms, for a single tube, is given by


Vacuum Tube Symbols
	Mu or u rp gm Ep Eg Ip R_L It Es	= = = = = = = = = =	Amplification factor, Dynamic plate resistance in ohms, Mutual conductance in mhos, Plate voltage in volts, Grid voltage in volts, Plate current in amperes, Plate load resistance in ohms, Total cathode current in amperes, Signal voltage in volts, change or variation in value, which may be either an increment (increase) or a decrement (decrease).

Peak, R.M.S., and Average A-C Values of E & I

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