for the HP 42S
L• - Inductanse of a straight conductor of circular section

Input
Resources used
Output
Straight conductor
of circular section
Relative permiability and conductance
of popular materials

Program list
Lsc - Rev.1.00, Aug. 11 2011
00 { 258-Byte Progm }
01 LBL "L•"
02 MVAR "Len"
03 MVAR "Dia"
04 MVAR "F"
05 MVAR "G"
06 MVAR 'μr"
07 VARMENU "L•"
08 STOP
09 EXITALL
10 XEQ 00
11 4e-7
12 RCL÷ "G"
13 RCL× "2Π"
14 RCL× "μr"
15 RCL× "F"
16 SQRT
17 RCL× "Dia"
18 PI
19 ×
20 STO 00
21 1.86128e-4
22 ×
23 0.873011
24 +
25 1.27964e-3
26 RCL× 00
27 0.0278381
28 -
29 RCL× 00
30 1
31 +
32 ÷
33 SQRT
34 STO 00
35 RCL× "μr"
36 4
37 ÷
38 RCL "Dia"
39 RCL÷ "Len"
40 ENTER
41 ENTER
42 2
43 ÷
44 X<>Y
45 4
46 X<>Y
47 ÷
48 LN
49 +
50 1
51 -
52 +
53 RCL× "Len"
54 2e-10
55 ×
56 STO "L"
57 ENTER
58 "RCL× "F"
59 RCL× "2π"
60 STO "X"
61 CLA
62 "L="
63 ARCL "L"
64 "[H]LFX="
65 ARCL "X"
66 "[Ohm]"
67 AVIEW
68 RTN
69 LBL 00
70 PI
71 ENTER
72 +
73 STO "2π"
74 RCL "F"
75 X≤0?
76 1e9
77 STO "F"
78 RCL "μr"
79 X≤0?
80 0.999991
81 STO "μr"
82 RCL "G"
83 X≤0?
84 5.88e7
85 STO G
86 RTN
87 .END.

Example
Input
Var "Len" = 10 [mm]
Var "Dia" = 1 [mm]
Var "F" = 1e9 [Hz]
Var "G" = 5.76e7 [S/m]
Var "μm" = 0.999991
Output
L=5.9450658958e-9 [H]
X=37.353950687e0 [Ohm]

Mem 00: 934.62238679e-3

y: 5.94506589582e-9
x: 37.3539506869e0 
DOWNLOAD
'Lsc-1.02' (Lsc.raw, 260 byte, raw program file for the Free42)
REFERENCE
  1. Brian C. Wadell, "Transmission line design handbook", Artech House, Boston, 1991.
  2. F.W. Grouvers, "Inductance calculations", Van Nostrand, New York, 1946.

SEE ALSO
Online calculator - Inductance of a straight conductor of circular section
Online calculator - Inductance of a straight conductor of thin flat section
for the hp 42S - Inductance of a straight conductor of thin flat section

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