Reactance Chart Solver

Description

By Eddie Shore, January 2016 (Eddie's Math and Calculator Blog)
Source: HP-65 E.E. PAC 1. Hewlett Packard. September 1974. pg. 8-9

Equation:
2·π·f·√(L×C) = 1


Variables:

R0 = f = Resonant Frequency (Hz)
R1 = L = inductance (henrys)
R2 = C = capacitance (farads)

Instructions:

Enter the known values in each of the variables. Enter the number of the variable to be solved in register I (STO I).
To solve, enter a range, and press f SOLVE D (*or whatever label you assigned this program to)

Example:

f = R0 = 60 Hz, L = R1 = 2.5 H. Calculate C (R2). Result: R ≈ 2.8145 E-06 (use range 0 to 1):

60 STO 0
2.5 STO 1
2 STO I
0 ENTER 1
f SOLVE D

Program Resources

Labels

Name Description
 D Reactance Chart Solver

Storage Registers

Name Description
 0 Resonant Frequency (Hz) f
 1 Inductance (henrys) L
 2 Capacitance (farads) C
(i) Register number to solve for

Program

Line Display Key Sequence
000
001 42,21,14 f LBL D
002 44 24 STO (i)
003 2 2
004 43 26 g π
005 20 ×
006 45,20, 0 RCL × 0
007 45 1 RCL 1
008 45,20, 2 RCL × 2
009 11 √x̅
010 20 ×
011 1 1
012 30
013 43 32 g RTN