![magnetics - Magnet that needs power to turn off? Inverse coil? - Electrical Engineering Stack Exchange magnetics - Magnet that needs power to turn off? Inverse coil? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/AKwdA.jpg)
magnetics - Magnet that needs power to turn off? Inverse coil? - Electrical Engineering Stack Exchange
![Dry Erase Magnetic Roll, Glossy White Write On/Wipe Off Magnet, 24 inches by Flexible Magnets(2 FT X 25 FT) - Walmart.com Dry Erase Magnetic Roll, Glossy White Write On/Wipe Off Magnet, 24 inches by Flexible Magnets(2 FT X 25 FT) - Walmart.com](https://i5.walmartimages.com/asr/57f75a2d-75f8-4f5b-ac86-52fa5c2c9cc8_1.2dbbc21de86f1f9cc79b787e7f5c3b16.jpeg)
Dry Erase Magnetic Roll, Glossy White Write On/Wipe Off Magnet, 24 inches by Flexible Magnets(2 FT X 25 FT) - Walmart.com
![MAG-Mate JF095R on/Off Magnetic Magnet with Flange, 95 lb. Lift, 95 lb. Load Capacity, 2.18" Height, 0.85" Width, 2.25" Length, Silver/Red: Amazon.com: Industrial & Scientific MAG-Mate JF095R on/Off Magnetic Magnet with Flange, 95 lb. Lift, 95 lb. Load Capacity, 2.18" Height, 0.85" Width, 2.25" Length, Silver/Red: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71N75sxH0FL.jpg)
MAG-Mate JF095R on/Off Magnetic Magnet with Flange, 95 lb. Lift, 95 lb. Load Capacity, 2.18" Height, 0.85" Width, 2.25" Length, Silver/Red: Amazon.com: Industrial & Scientific
![H-type SM. When off the magnetic flux closes between the two magnets.... | Download Scientific Diagram H-type SM. When off the magnetic flux closes between the two magnets.... | Download Scientific Diagram](https://www.researchgate.net/publication/282572429/figure/fig1/AS:363393354616833@1463651135597/H-type-SM-When-off-the-magnetic-flux-closes-between-the-two-magnets-Rotating-the-upper.png)