Brushed DC Motor with Three‑Phase Commutation

Overview

An engineering‑style animation that visualizes a brushed DC motor with three double‑rotor coils spaced 120° apart. The stator’s permanent magnets, the electromagnetic coils, magnetic field lines, and the force direction \$\mathbf{F}=I\\,\mathbf{L}\ imes\mathbf{B}$ are shown. The commutator’s action is illustrated as the active coil switches every 120°, keeping the rotor turning continuously.

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Phases

#	Phase Name	Duration	Description
1	Intro	~3s	Title fades in, then the motor outline (stator housing, brushes) appears centered.
2	Stator Magnets	~4s	Two permanent magnets (N on left, S on right) are displayed with field lines (blue arrows) and labels.
3	Coil 1 Activation	~5s	The first double‑coil (highlighted in red) is energized: north pole on the side facing the stator N, south pole opposite. Field lines from coil to stator magnets appear, and a force arrow on the rotor shows the torque direction. Equation $\mathbf{F}=I\mathbf{L}\ imes\mathbf{B}$ is shown in the bottom area.
4	120° Rotation & Switch to Coil 2	~5s	The rotor rotates 120° while the commutator switches. Coil 1 de‑energizes, coil 2 (green) lights up. New field lines and force arrow appear, demonstrating the same torque direction.
5	120° Rotation & Switch to Coil 3	~5s	Another 120° turn, switch to coil 3 (orange). Field lines and force arrow are displayed again.
6	Continuous Rotation Summary	~3s	A fast‑forward loop of the three‑step cycle emphasizes continuous rotation. Labels “B‑field” and “Force $\mathbf{F}$” remain visible.
7	Outro	~2s	All elements fade out, leaving only the title and a brief caption “Brushed DC motor – three‑phase commutation”.

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Layout

┌─────────────────────────────────────────────┐
│                 TOP AREA                    │
├───────────────────────┬─────────────────────┤
│                       │                     │
│      LEFT AREA        │    RIGHT AREA       │
│  (Motor diagram,      │  (Equations,        │
│   field lines,       │   labels, arrows)   │
│   force arrows)      │                     │
│                       │                     │
├───────────────────────┴─────────────────────┤
│                 BOTTOM AREA                │
│   Small caption, source note (optional)    │
└─────────────────────────────────────────────┘

Area Descriptions

Area	Content	Notes
Top	Title "Brushed DC Motor – Three‑Phase Commutation"	Fades in at start of Intro, stays throughout
Left	Central motor illustration: stator housing, permanent magnets, three double coils, brushes, commutator, rotating rotor. Magnetic field lines (blue for permanent magnets, red/green/orange for coil fields) and torque arrows.	Primary visual focus; rotates with the rotor.
Right	Inline equations: $\mathbf{B}$ field direction arrows, $\mathbf{F}=I\mathbf{L}\ imes\mathbf{B}$ with brief label, and coil‑identification legends (red, green, orange).	Appears when first coil is energized and remains for reference.
Bottom	Brief caption "Force direction follows $\mathbf{F}=I\mathbf{L}\ imes\mathbf{B}$" and optional source note.	Small font, fades in with phase 3 and stays until Outro.

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Notes

• All magnetic field lines are animated as flowing arrows to convey direction.
• Force arrows are curved to indicate torque around the rotor axis.
• The commutator switch is visualized by a small rotating segment at the rotor’s rear, highlighting the active brush contact.
• Colors: permanent‑magnet field – light blue; coil 1 – red; coil 2 – green; coil 3 – orange.
• No textual narration is required; all information is conveyed visually.
• Total runtime ≈ 27 seconds, well within the 30‑second guideline.