Mutual Inductance Program V3.1 Copyright (c) 1998, 1999, 2000 by Mark S. Rzeszotarski, Ph.D. Solenoidal Primary Coil Geometry Primary coil inside diameter (inches)= 23.600 Primary coil outside diameter (inches)= 23.600 Number of primary coil turns = 5.250 Last turn elevation in inches = 7.900 Wire diameter (inches)= .1180 Solenoidal Secondary Coil Geometry Secondary coil diameter (inches)= 23.600 Secondary coil height (inches)= 7.900 Number of secondary coil turns = 5.250 Secondary coil wire diameter (inches)= .1180 Calculational Results Primary coil inductance in microhenries: Lp = 20.96 Secondary coil inductance in microhenries: Ls = 20.96 Figure of Merit (square root of Ls/Lp) = 1.00 Primary coil wire length in feet = 32.36 Secondary coil wire length in feet = 32.44 DC secondary resistance in ohms: .03 Secondary coil distributed capacitance in picofarads: 34.72 (Medhurst formula, assumes one end of secondary is grounded) Mutual Inductance Results Position is the secondary coil bottom wire position in inches above the bottom wire of the primary coil. A negative value means the bottom wire of the secondary is below the bottom wire of the primary. A positive value means that the bottom wire of the secondary is above the bottom wire of the primary coil. M = Mutual Inductance in microhenries K = Coefficient of Coupling: K = M / square root ( Lp x Ls ) Position M K 83.000 .054 .0026 83.100 .054 .0026 83.200 .054 .0026 83.300 .054 .0026 83.400 .054 .0026 83.500 .053 .0025 83.600 .053 .0025 83.700 .053 .0025 83.800 .053 .0025 83.900 .053 .0025 Operating Characteristics Ctoroid is the added capacitance of the top terminal. Fres is the resonant operating frequency in kilohertz. Cpri is the required primary capacitance in nanofarads. Zpri is the primary surge impedance in ohms. Zsec is the secondary surge impedance in ohms. Qsec is the secondary coil quality factor Q. Rac is the secondary coil RF resistance in ohms. Ctoroid(pF) .0 7.1 14.3 21.4 28.6 35.7 42.9 50.0 Fres(kHz) 5900.7 5373.8 4966.7 4640.0 4370.3 4142.8 3947.5 3777.4 Cpri (nF) .03 .04 .05 .06 .06 .07 .08 .08 Zpri(ohms) 776.9 707.5 653.9 610.9 575.4 545.5 519.7 497.3 Zsec(ohms) 777. 708. 654. 611. 575. 545. 520. 497. Qsec 1100.5 1049.8 1008.9 974.8 945.7 920.4 898.2 878.4 Rac (ohms) .7 .7 .6 .6 .6 .6 .6 .6