Pay in installments of $11.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Oct 10 - Oct 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Magnetic Suspension Kit with 12V Power SupplyMagnetic Suspension Kit with 12V Power SupplyFeatures:. Scientific Toys: Including shell stand and 12V power supply, using plug in components, need to be assembled by yourself. Provides tutorials and techniques. It is an extremely cool technological ornament on your desk and an excellent teaching aid for physics and electromagnetic experiments.. Principle: The pull up magnetic levitation is mainly composed of coil, magnet, bracket, Hall sensor and
Magnetic Suspension Kit with 12V Power SupplyFeatures:
.Scientific Toys: Including shell stand and 12V power supply, using plug-in components, need to be assembled by yourself. Provides tutorials and techniques. It is an extremely cool technological ornament on your desk and an excellent teaching aid for physics and electromagnetic experiments.
.Principle: The pull-up magnetic levitation is mainly composed of coil, magnet, bracket, Hall sensor and drive circuit. When the magnet is close to the Hall sensor, the Hall sensor senses the change in the magnetic field and outputs an analog quantity to the amplifier circuit for amplification. This value is used for pulse width modulation. When the magnet and suspended objects fall away from the sensor due to gravity, the sensor outputs The value increases the duty cycle of the voltage on the coil, and the magnetic force of the coil increases, thereby pulling the magnet and suspended objects. Conversely, when the sensor is very close, the output value of the sensor reduces the duty cycle of the coil voltage, and the magnetic force of the coil is weak. Magnets and suspended objects rely on their own gravity to move away from the sensor. By continuously adjusting the duty cycle of the coil voltage, the magnet objects are suspended.
.Placed Suspended Objects: First connect the power supply, then hold the magnet and slowly approach the coil from below the coil. When the distance is 2 cm, the attractive force provided by the coil can be sensed, and then let go after it stabilizes. If the magnetic force is not enough, you can adjust the circuit The blue adjustable resistor on the board is used for debugging, clockwise is to reduce the magnetic force; counterclockwise is to increase the magnetic force, the magnet should be adjusted to the best position, the magnetic force should not be too large or too small, just can pull the magnet. , Otherwise it will jitter.
.Note: Do not allow the magnet to be attached to the coil when the power is on, otherwise the circuit board will be easily damaged. Unsuccessful release of the float for a long time will cause a large instantaneous current inside the circuit board, and the temperature of the transistor and coil will increase. It is recommended that if the float is not successfully released for 8 times, unplug the power supply and try again after cooling down. Keep magnets away from electronic devices such as mobile phones and computers.
.Creative Gifts: Teaching aid models suitable for students and teachers, as well as excellent toys for technology enthusiasts. As a creative surprise gift, give it to family and friends.
.Age: 14+
Specifications:
.Color: As Shown
.Material: Electronic Components + Acrylic
.Suspended Weight: 200g Max
.Suspended Distance: 2cm Max
.Power Supply: 12V/2A
.Power: 2-5W
.Product Weight: 300g
.Package Dimensions: 20 x 15 x 12cm
.Package Weight: 700g
.Packing: Box
Package Content:
.1 x Magnetic Suspension Kit
.1 x Outer Shell Stand
.1 x 12V Power Supply
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 17 reviews
Sort
Product Reviews
★★★★★ 5
Best Tennis Balls Ever
Color: Non-Squeaky - Pack of 12, Size: Medium
Admittedly, I haven't had these for very long, received on Jan 7 and today is Jan 19., 2021, only 12 days. But, we have a terrier mix who hasn't found a tennis ball she couldn't destroy given an hour or two. That is until now. Twelve Days later? She hasn't managed to destroy it at all. We have a puzzle cub that came with a ball inside it. It only took her a couple hours for the ball to rupture at the seam and another 10 minutes to completely destroy it beyond recognition. We put one of these balls in there and here we are over a week later. Not only has she not destroyed the ball but she hasn't been able to get this one out. She looks so silly trying to carry the ball inside the cube. It's hilarious. Anyway, I digress. I would totally recommend this toy for an yone who has a dog that lives to play fetch bit keeps destroying the balls. By the way,
Update: Jan 31, 2021 and still going strong. No signs of damage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2021
★★★★★ 5
Perfect tennis ball size.
Color: Non-Squeaky - Pack of 12, Size: Medium
Like most doggy balls they dont last as long as real tennis ball, but a real tennis ball can wear down her teeth. Great colors, tho in a few days they are yard colored cuz of the slobber and nature on it. Love the handy mesh bag for keeping put away until we need to get out a new one. My dog loves the no squeaky. To her squeaky is inside toy and too distracting for outdoor play. She really enjoys fetching this ball.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Worth it
Color: Non-Squeaky - Pack of 12, Size: Medium
My dogs love them and enjoy the lm
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
pet toys
Color: Non-Squeaky - Pack of 12, Size: Medium
Perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 4
My Dog Dreams Of Squeaky Balls 🐶
Color: Squeaky - Pack of 12, Size: Medium
My dog really loved these balls when I got them. It's a great variety of colors, the fabric is well-attached, and I LOVE that the squeaker is hidden under the fabric, reducing risk that it falls out and gets eaten by one of the dogs. The net carrying bag is a nice touch as well.
Unfortunately, these balls do not hold up to much play. I have a medium-sized dog and he likes to mouth the ball when he catches it to squeak it. The squeaker broke on every single one of these within the first play session. Thankfully it stays contained in the sealed ball, but still, it would be nice if it lasted a *little* bit longer.
Beyond the squeaker issue, my dog wears these out within a day or two of play. Keep in mind that he LOVES playing fetch and we will spend a good hour playing per night. Usually the fabric starts to detach and the ball will start breaking at the seam (the ball is two halves glued or sealed together).
That may be the fault of the dog, though, since he does squeak these an awful lot while we play. Buying a stronger ball may not be an option because he enjoys the ones that are easier to squeak like these are!
Overall I'm fairly happy, I just wish they lasted a little longer or cost a little less. 🐶
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2025
recommand products
HKM-330643 Dog Training Chain with Zinc Alloy Buckle - Iron Material (2.5mm x 35cm, 3.0mm x 50cm, 3.5mm x 55cm, 4.0mm x 60cm)
72.99
HKM-249299 Gold Stainless Steel Cast Dog Collar, 32mm Wide, Available in 40cm to 65cm Lengths
133.99
HKM-953235 Metal Neck Ornaments with Bells for Puppies - Adjustable Sizes XS to L in Blue and Purple
69.99
HKM-182611 Festive Red Bow Collar for Cats and Dogs - Handmade with Pearl Lace and Floral Accents
73.99
Custom Red Light Purple Jacket
36.99