E-CodeSeries-parallel resistor network reducer — a TI-84 Plus CE program
RESNET is a TI-BASIC program for the TI-84 Plus CE. Reduce any series-parallel network step by step: combine a list of resistors in series or in parallel, reuse the running result R (or saved A, B, C) inside the next list, then apply a voltage for the total current and power.
What it asks for and what it shows
It asks for 4 values at its prompts, after you pick options 2, 3, 1, 1, 2, 4, 5 from its menu. In the example below it shows I (A), P (W), REQ OHM.
Example run
One of its oracle test cases: “(20‖30)+8, then ‖20, at 12 V”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Menu | option 2 |
| Menu | option 3 |
| Menu | option 1 |
| Menu | option 1 |
| Menu | option 2 |
| Menu | option 4 |
| Menu | option 5 |
| Input 1 | {20,30} |
| Input 2 | {A,8} |
| Input 3 | {R,20} |
| Input 4 | 12 |
| The screen shows | |
I (A)= | 1.2 |
P (W)= | 14.4 |
REQ OHM= | 10 |
How it's checked
4 test cases, each checked against an independent method. Replayed key by key on a virtual TI-84 Plus CE, they make 14 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 “Series-parallel resistor network reducer” (RESNET).
- 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)
- RC, RL and RLC transient response
- 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