Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Students · Motor Torque–Speed

Motor Torque–Speed for a Class-D amp

Built for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition. Simulate a Class-D amp live below — adjust the inputs and watch it respond, right in your browser.

DC Motor Torque–SpeedLive

where torque meets power

Controls

Presets

Stall torque (N·m)

No-load speed (rpm)

Load torque (N·m)

A DC motor trades torque for speed along a straight line: maximum torque at stall, maximum speed at no load. Mechanical power (torque × speed) peaks right in the middle, at half the no-load speed. Educational tool.

▶ Run in Python

Data Inspector

Operating speed300 rpm

Output power25.1 W

Peak power26.2 W @ 250 rpm

Governing equation

τ = 2 (1 - \frac{ω}{500}), ω_{o p} = 300 rpm

Reading this result: Light load: the motor spins up past half-speed toward no-load, trading available torque away for RPM.

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Frequently asked questions

Is this good for students?: Yes — this version of "Motor Torque–Speed for a Class-D amp" is framed for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.