Reactance Chart

Description

Origin: HP-34C Student Engineering Applications, August 1979, p. 7

This program calculates inductive and capacitive reactance and provides interchangeable solutions between frequency, inductance and capacitance at resonance.
Formulas used
       1
f = ———————
    2π√(LC)

     1
X = ————
    2πfC

where:
f = resonant frequency (hertz)
L = inductance (henrys)
C = capacitance (farads)
X = reactance (ohms)

Instructions:

Store any two of f, L and C. Clear the unknown. Press B to calculate the unknown and X, the reactance.

Example 1:

L = .1 mh, C = .2 μf; calculate f and X:
.1 EEX CHS 3 STO 5
.2 EEX CHS 6 STO 6
0 STO 4
B → 22.3607 (X, ohms)
RCL 4 → 35,588.1272 (f, hertz)

Example 2:

f = 100, C = .1 μf; calculate X:
100 STO 4
.1 EEE CHS 6 STO 6
0 STO 5
B → 15,915.4943 (X, ohms)

Program Resources

Labels

Name Description
 B Calculate the unknown and the reactance X
 0 # - internal use -
 1 # - internal use -
 2 # - internal use -
 3 # - internal use -

Storage Registers

Name Description
 4 f
 5 L
 6 C
 7 X

Program

Line Display Key Sequence Line Display Key Sequence
000 019 45 6 RCL 6
001 42,21,12 f LBL B 020 40 +
002 45 4 RCL 4 021 44 5 STO 5
003 43,30, 0 g TEST x≠0 022 22 2 GTO 2
004 22 0 GTO 0 023 42,21, 1 f LBL 1
005 45 5 RCL 5 024 40 +
006 45 6 RCL 6 025 44 6 STO 6
007 20 × 026 42,21, 2 f LBL 2
008 11 √x̅ 027 45 4 RCL 4
009 32 3 GSB 3 028 45 6 RCL 6
010 44 4 STO 4 029 20 ×
011 22 2 GTO 2 030 42,21, 3 f LBL 3
012 42,21, 0 f LBL 0 031 43 26 g π
013 32 3 GSB 3 032 20 ×
014 43 11 g 033 2 2
015 45 5 RCL 5 034 20 ×
016 43,30, 0 g TEST x≠0 035 15 1/x
017 22 1 GTO 1 036 44 7 STO 7
018 33 R⬇ 037 43 32 g RTN