PPolySim OS
For K-12 Students · Transmission Line

Transmission Line for a three-phase motor

Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a three-phase motor live below — adjust the inputs and watch it respond, right in your browser.

Transmission Line & VSWRLive

Controls

Presets

When a transmission line meets a load that does not match its impedance, part of the wave reflects. Incident and reflected waves combine into a standing-wave pattern measured by the VSWR. A perfect match (RL = Z₀, XL = 0) gives VSWR 1 and no reflection — the goal of every antenna and RF design.

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Data Inspector

Reflection |Γ|0.200
VSWR1.50 : 1
Return loss14.0 dB
Matchpoor

Governing equation

Reading this result: A large resistive mismatch reflects much of the wave, giving a high VSWR and deep nulls in the standing-wave pattern.

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Frequently asked questions

Is this good for k-12 students?
Yes — this version of "Transmission Line for a three-phase motor" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.