Description
Magnetic Levitation DIY Kits Science Experiment Kits Pull-Up Suspension Magnetic Levitation Toy DIY Science Kit
Product Description
Product principle
The pull-up magnetic levitation is mainly composed of a coil, a magnet, a bracket, a Hall sensor and a drive circuit. When the magnet is close to the Hall sensor under the coil, the Hall sensor senses the change of the magnetic field and outputs an analog quantity to the amplifier circuit for amplification, and then passes This value is pulse width modulated. When the magnet and the suspended object drop due to gravity, they will move away from the sensor. The output value of the sensor increases the voltage duty cycle on the coil and the magnetic force of the coil increases, thereby pulling the magnet and the suspended object. On the contrary, when the distance sensor is very When approaching, the sensor output value reduces the duty cycle of the coil voltage, the line The magnetic force of the coil is weak, and the magnet and the suspended objects rely on their own gravity to stay away from the sensor, and the magnetic object is suspended by continuously adjusting the duty cycle of the coil voltage.
Place suspended matter
Connect the power first, then hold the magnet from the bottom of the coil and slowly approach the coil. When the distance is 2 cm, the attractive force provided by the coil can be sensed, and then let go after stabilization. If the magnetic force is not enough, you can adjust the blue color on the circuit board. Adjust the resistance for debugging, clockwise is to reduce the magnetic force; counter-clockwise is to increase the magnetic force, the magnetic force must be adjusted to the best position, the magnetic force can neither be too large nor too small, just enough to pull the magnet, otherwise it will shake.
Precautions
1. Do not let the magnet attach to the coil when the power is on, otherwise the circuit board will be easily damaged. 2. If the float is not placed successfully for a long time, the instantaneous current inside the circuit board will be large, and the temperature of the transistor and the coil will rise. 3. The magnet is far away from the mobile phone, computer ID card, and various electronic devices such as bank cards.
Specification
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item
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value
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Name
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Pull-up Magnetic Levitation
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Power supply
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12V/ 2A
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Power
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2-5W
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Suspension distance
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maximum 2cm
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Suspended weight
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maximum 200 grams
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Product weight
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about 300 grams
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Installation Instructions
Precautions
(1) Kit without power supply (2) Note that the components on the board are welded from the small ones, and then the larger ones are welded. (3) Individual components such as resistors and capacitors are temporarily out of stock. We will replace components with other values near the symbol circuit principle. The blue metal film resistors may be replaced with gray carbon film resistors, and gray carbon film resistors. It may also be replaced by a blue metal film resistor. is the same effect. (4) After welding, please self-debug. If there is no error in welding, it can generally be successful. If the welding fails, we can only help you to check the problem. We cannot guarantee that you will be successful after welding. This is why the factory production line needs to be repaired. For reasons of workmanship, electronic products are likely to have problems due to electrostatic breakdown, because the positive and negative poles of the power supply are connected incorrectly, because of virtual welding, because the components are welded in the wrong position, and so on. When you achieve the effect we describe, please do not rush to give us an evaluation, remember to contact us, we will do our best to assist.
Details Images