for the HP 42S
L- ‐ Inductanse of a straight conductor of thin flat section

Input
Resources used
Output
Straight conductor
of thin flat section

Program list
Lsf - Rev.1.00, Aug. 11 2011
00 { 113-Byte Progm }
01 LBL "L-"
02 MVAR "Len"
03 MVAR "W"
04 MVAR "T"
05 MVAR "F"
06 VARMENU "L-"
07 STOP
08 EXITALL
09 RCL "W"
10 RCL+ "T"
11 RCL÷ "Len"
12 ENTER
13 ENTER
14 0.2235
15 ×
16 0.5
17 +
18 X<>Y
19 2
20 X<>Y
21 ÷
22 LN
23 +
24 RCL× "Len"
25 2e-10
26 ×
27 STO "L"
28 ENTER
29 ENTER
30 +
31 PI
32 ×
33 "RCL× "F"
34 STO "X"
35 CLA
36 "L="
37 ARCL "L"
38 "[H]LFX="
39 ARCL "X"
40 "[Ohm]"
41 AVIEW
42 RTN
43 .END.

Formulas used


where,
Lflat : inductance of the conductor [μH]
ℓ : length of the conductor [mm]
w : width of the conductor [mm]
t : thickness of the conductor [mm]
Example
Input
Var "Len" = 10 [mm]
Var "W" = 1.74 [mm]
Var "T" = 0.018 [mm]
Var "F" = 1e9 [Hz]
Output
L=5.94169354858e-9[H]
X=37.33327616042e0[Ohm]

y:5.94169354858e-9
x:37.33327616042e0
DOWNLOAD
'Lsf-1.00' (Lsf.raw, 115 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 thin flat section
Online-calculator - Inductance of a straight conductor of circular section
Inductance of a straight conductor of circular section / hp-42S

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