Mutual inductance music
- In stock with stable lead times — single units or complete sets
- Size, appearance and interaction can be adapted to the museum’s theme
- For science museums, campus science rooms, community science centers and mobile science museums
- Export packing and overseas on-site installation support
Mutual inductance music - customized science museum exhibitions, campus community science popularization equipment, source manufacturer of science exhibitions, exhibition description and scientific principle introduction:
The exhibition items demonstrate the working principle of the speaker. There is a voice coil and diaphragm in the horizontal tube of the exhibition items connected to the paper tray, and a coil in the other horizontal tube. Press the "start" button to power on the exhibition items, and then adjust the distance between the horizontal tubes through the "left" and "right" buttons. You will find that the speaker will only make sound when the two horizontal tubes are close. Speaker, also known as horn, is an electroacoustic device that converts electrical signals into sound energy and effectively radiates the sound in the air. Currently, the most widely used is the permanent magnet electric speaker, which is composed of a diaphragm, voice coil, permanent magnet, bracket, etc. When the audio electrical signal is input into the speaker, the voice coil generates an alternating magnetic field under the action of current, and the permanent magnet also generates a constant magnetic field of constant size and direction. In the exhibition items, coils replace permanent magnets. When powered on, the coils generate a magnetic field distributed in a circular pattern along the center of the tube, turning into electromagnets. After the voice coil and electromagnet approach each other, the magnitude and direction of the magnetic field generated by the voice coil constantly change with the variation of the audio current. The interaction between the two magnetic fields causes the voice coil to move perpendicular to the direction of the current in the voice coil. As the voice coil is connected to the diaphragm, it drives the diaphragm or paper tray to vibrate, pushing the surrounding air to transform into sound. The larger the current input to the voice coil, the greater the force of its magnetic field, the greater the amplitude of the diaphragm vibration, and the louder the sound. The main applications of electromagnetic induction include electromagnetic cranes, electromagnetic relays, electric motors, maglev trains, etc.
Main technical parameters of exhibits:
Dimensions (unit: m): 1 × 0.6 × 1.2 1. exhibits materials: ① Booth: 30 square tube frame, 1.2mm cold-rolled plate enclosure, surface painted ② Table top: Cambert plate, thickness ≥ 10mm ③ Instruction board, graphic board: acrylic UV spray painting ④ Maintenance door: 1.2mm cold-rolled plate surface painted ⑤ Protective cover: transparent acrylic+customized color acrylic according to actual needs 2. Main configuration: ① Leakage switch: pole number: 2P+N; Release current: 16A; arc extinguishing medium: residual current circuit breaker; Breaking capacity: 6KA ② Button: Red wave button GQ25-11E Installation hole size Φ 25; Working voltage 250V; Working current: 5A; Rated heating current: 10A; Mechanical lifespan: 1 million cycles; Head protection level: IP65; Protection method: Waterproof. ③ Solid state relay: SSR-4810 DA rated parameters 10A 250V INPUT: 3-32VDC OUTPUT: 24-480VAC ④ Delay module: SHZHY-2013-3-3GHR input: 220VAC output: both AC and DC can delay time: 0-10 minutes 3. Energy requirement: AC220V 200W
Principle explanation and demonstration video: