User`s guide

EE Pro for TI - 89, 92 Plus
Equations - Resistive Circuits
9
Chapter 16 Resistive Circuits
This software section performs routine calculations of resistive circuits. The software is organized in a number of
topics listed below.
Resistance and Conductance
Ohm’s Law and Power
Temperature Effects
Maximum Power Theorem
V and I Source Equivalence
Variables
A complete list of all the variables used, a brief description and applicable base unit is given below.
Variable Description Unit
A Area m
2
G Conductance S
I Current A
Il Load current A
Is Current source A
len Length m
P Power W
Pmax Maximum power in load W
R Resistance Ω
Rl Load resistance Ω
Rlm Match load resistance Ω
RR1 Resistance, T1 Ω
RR2 Resistance, T2 Ω
Rs Source resistance Ω
T1 Temperature 1 K
T2 Temperature 2 K
V Voltage V
Vl Load voltage V
Vs Source voltage V
α Temperature coefficient 1/°K
ρ Resistivity Ω*m
σ Conductivity S/m