E-CodeRC, RL and RLC transient response — a TI-84 Plus CE program
CIRCTRAN is a TI-BASIC program for the TI-84 Plus CE. Capacitor volts and current at any instant t for an RC charge, an RL current rise, or a series RLC step (with alpha, omega0, zeta, omega-d and the damping type), from any starting volts and current.
What it asks for and what it shows
It asks for 5 values at its prompts, after you pick option 1 from its menu. In the example below it shows TAU S, VC V, I A, UC J, 5TAU S.
Example run
One of its oracle test cases: “RC charging from 0 V, t = 2 tau”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Menu | option 1 |
| Input 1 | 9 |
| Input 2 | 1000 |
| Input 3 | 0.0001 |
| Input 4 | 0 |
| Input 5 | 0.2 |
| The screen shows | |
TAU S= | 0.1 |
VC V= | 7.781982451 |
I A= | 0.001218017549 |
UC J= | 0.003027962543 |
5TAU S= | 0.5 |
How it's checked
10 test cases, each checked against an independent method. Replayed key by key on a virtual TI-84 Plus CE, they make 72 checks.
How E-Code checks every program
Run it or put it on your calculator
- Open the library in the TI-84 Plus CE calculator and pick “RC, RL and RLC transient response” (CIRCTRAN).
- Put it on your own calculator with a computer and a USB cable, or type it in by hand.
Related programs
- RC circuit charging transient
- Three-loop circuit (mesh currents)
- Series-parallel resistor network reducer
- AC circuit: series or parallel RLC phasors
- Op-amp stages: gain and output
All TI-84 Plus CE engineering programs · All TI-84 Plus CE programs