Magnetic Brake
★Exhibit Content: Eddy current electromagnetic damping, magnetic braking principle ★Interaction: Electromechanical interactive demonstration ★Operation: 1. Push multiple metal plates to make them swing; 2. Press the button to switch the magnetic field on and off; 3. Observe the order in which each group of metal plates stops swinging, and compare the difference in swing duration with and without the magnetic field. ★Exhibit Description: "Magnetic Brake" is an interactive exhibit for science popularization of electromagnetic induction physics, belonging to the electromagnetic mechanics exhibition area, and is a recommended exhibit by KexMall. The exhibit consists of a painted console, metal support beam, three independent metal swing plates, electromagnet coil modules, control buttons, and an electrical control system. Visitors manually push the metal plates to swing. When the magnetic field is turned on, the metal plates cut magnetic field lines to generate eddy currents and quickly decelerate to a stop; when the magnetic field is turned off, the swing of the metal plates decays slowly. This intuitively compares the electromagnetic damping braking effect produced by eddy currents, and popularizes the core technical principle of magnetic braking for maglev trains. ★Scientific Principle: The core principle of the exhibit is the eddy current electromagnetic damping effect. A strong magnet generates a stable magnetic field. When a conductive metal plate swings through the magnetic field, it cuts magnetic field lines, inducing closed eddy currents inside the metal. The eddy currents themselves generate a reverse magnetic field, which interacts with the original magnetic field to produce a braking force that hinders motion. The magnitude of the braking force is proportional to the speed of the metal's motion. The kinetic energy of motion is converted into heat and dissipated, achieving non-contact magnetic braking. High-speed trains and maglev trains rely on this principle for smooth deceleration. At low speeds, the eddy current braking force is insufficient, and friction brakes are needed as auxiliary braking.
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- 1.2×0.7×1.1m 1.2×0.7×1.1mDimensions (L×W×H): 1.2×0.7×1.1m Brand: KexMall Model: PopsciCat-ElectroMagnetic-177 1. Materials ① Base: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate, surface with white and blue painted finish, scratch-resistant and wear-resistant ② Tabletop: Kelaisi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction sign: acrylic UV high-definition printing, printed with eddy current, magnetic braking principle and operation steps ④ Maintenance access: 2.0mm cold-rolled steel plate painted cover ⑤ Support beam: thickened painted metal square tube, stable structure without deformation ⑥ Swing metal plates: high-conductivity copper-aluminum composite metal plates, three groups independently color-coded ⑦ Coil housing: black translucent acrylic, formed by hot bending, visually displaying copper coil windings 2. Main Configuration ① Electrical control system: electrical logic control system, equipped with Guanjian® K1 type PLC controller dedicated for science exhibits with protection, with over-temperature and short-circuit protection ② Control button: self-resetting stainless steel metal button, low-voltage safety circuit ③ Three sets of electromagnetic coil modules (with neodymium magnets) ④ Three sets of independent swing metal plate assemblies ⑤ Switching power supply: AC100-240V, 50/60Hz input, DC24V regulated output 3. Installation Requirements ① Power requirement: AC100-240V, 50/60Hz/200W (standard three-wire socket, reliable grounding) ② Installation foundation: console placed directly on the floor ③ Entry passage: door frame dimensions (W×H) ≥1.4m×1.3m, continuous turning interval ≥2.0m ④ Maintenance access: not required
★Exhibit Content: Eddy current electromagnetic damping, magnetic braking principle ★Interaction: Electromechanical interactive demonstration ★Operation: 1. Push multiple metal plates to make them swing; 2. Press the button to switch the magnetic field on and off; 3. Observe the order in which each group of metal plates stops swinging, and compare the difference in swing duration with and without the magnetic field. ★Exhibit Description: "Magnetic Brake" is an interactive exhibit for science popularization of electromagnetic induction physics, belonging to the electromagnetic mechanics exhibition area, and is a recommended exhibit by KexMall. The exhibit consists of a painted console, metal support beam, three independent metal swing plates, electromagnet coil modules, control buttons, and an electrical control system. Visitors manually push the metal plates to swing. When the magnetic field is turned on, the metal plates cut magnetic field lines to generate eddy currents and quickly decelerate to a stop; when the magnetic field is turned off, the swing of the metal plates decays slowly. This intuitively compares the electromagnetic damping braking effect produced by eddy currents, and popularizes the core technical principle of magnetic braking for maglev trains. ★Scientific Principle: The core principle of the exhibit is the eddy current electromagnetic damping effect. A strong magnet generates a stable magnetic field. When a conductive metal plate swings through the magnetic field, it cuts magnetic field lines, inducing closed eddy currents inside the metal. The eddy currents themselves generate a reverse magnetic field, which interacts with the original magnetic field to produce a braking force that hinders motion. The magnitude of the braking force is proportional to the speed of the metal's motion. The kinetic energy of motion is converted into heat and dissipated, achieving non-contact magnetic braking. High-speed trains and maglev trains rely on this principle for smooth deceleration. At low speeds, the eddy current braking force is insufficient, and friction brakes are needed as auxiliary braking.
Review
Principle Display: ★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★