Alternating Current Measurements at Audio and Radio Frequencies |
Contents
ALTERNATING CURRENT THEORY | 1 |
THE MEASUREMENT OF SELF INDUCTANCE AT | 22 |
THE MEASUREMENT OF MUTUAL INDUCTANCE | 39 |
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a.c. potentiometer accuracy alternate adjustments alternating current ammeter angle applied voltage C₁ C₂ calibration Carey Foster circuit co-ordinate type coil under test conditions of balance connected crystal denote detector determination direct current effective resistance equal equation formula harmonic heterodyne wave-meter I₁ indicated induced e.m.f. inductive coil instrument L₂ M₁ M₂ magnitude meter mica condenser microhenries mutual capacitance mutual inductance mutual inductometer non-inductive resistance null method obtained ohms parallel phase points potential divider power factor primary quadrature quartz oscillator quartz resonator quencies R₁ R₂ range reactance reading residual inductance resistance box resistance in series rotating vector secondary shown in Fig shunt skin effect slide wires standard condenser steady current stray capacitance switch tance telephone terminals V.V. FIG V₁ V₂ valve voltmeter variable air-condenser varying vector diagram vector impedance vibration galvanometer voltage volts w²cL Wagner earth Wheatstone bridge whence zero µµF