Smart cover how many magnets

For the first time ever, iFixit conducted a teardown of a case, a move that highlights the unique nature of Apple's Smart Cover for the iPad 2. When the iPad 2 was first introduced, Apple touted that its accessory cover was developed alongside the new touchscreen tablet. The solutions provider utilized magnetic viewing film to demonstrate the magnetic poles of the material inside the Smart Cover. It found that one magnet is used to turn off the iPad 2 screen, while the rest are used to either clamp the case to the iPad 2 or form the triangle shape that allows the case to act as a stand.

The sleep control for the iPad 2 can even be triggered with a separate magnet without using the Smart Cover, automatically enabling or disabling the screen. Inside the iPad 2, a row of magnets are located on the right side of the device, making the Smart Cover clamp to the surface of the device.

The magnets are clearly labeled with their alternating polarity, which ensures the Smart Cover always sits in the same orientation. Also included in the iPad 2 are a row of magnets along the left side of the device, which allows the Smart Cover to latch onto the side and pivot to open and allow access to the screen. The teardown also revealed that Apple opted for a steel-to-magnet bond, which is weaker than a magnet-to-magnet bond, which is why there are a total of 21 magnets inside the case.

The Smart Case does not use any correlated magnets, which have a complex field of patterns rather than standard positive and negative polarity. The magnets used by Apple inside both the Smart Cover and iPad 2 are regular two-pole magnets.

Last week, iFixit conducted a more traditional teardown of the iPad 2 itself. The disassembly of Apple's latest touchscreen tablet revealed that the new device has a slightly bigger battery than its first-generation counterpart, as well as double the RAM with MB.

By default, Apple preloads some of its native apps onto your iPhone and iPad, but you may find that you don't need every app included.

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The patterns, combined with varying poles, means that the Smart Cover can only be attached the right way. We just can't keep these things off of one another! The iPad 2's frame magnets made a solid two-inch leap across the table by the time we took the shot. Their attraction for one another is amazing!

All of them were the standard, two-pole kind, but they were arrayed in such a way that made clamping the Smart Cover to the iPad 2 quite easy. A small round magnet is located in the Smart Cover just above the array of 12 magnets in its right side. This is the magnet that activates a small inductive sensor embedded in the iPad 2's bezel.

This is what powers the Smart Cover's ability to automatically lock the iPad's screen when closed, instead of the NFC technology that was rumored earlier this year.

Stay tuned for the Ars Technica review of the iPad 2. We plan to post it very soon! You must login or create an account to comment.

The iPad 2's three-cell battery has essentially the same capacity as the original iPad's two-cell battery, good for 10 hours of use. Thank you so much for the through discussion of the mechanics of this fascinating device. One thing that is not clear to me though, especially given the strength of these magnets is how these magnets are not a danger to items such as credit cards. What is it in the construction that allows for these magnets to hold together and yet safe from erasing other magnatized items?

I'm a jewelry designer interested in using magnets for connections within pieces using leather and am wanting to find out how to use them without causing any negative effects. Thank you for your teardown. I'm planning to make a case fitted in my car on the dashboard och wondering if i can use magnets to secure the ipad 2 in the case.

I'm about to orders some superstrong magnets from supermagnete. Is it possible for you to messure the magnets, please? I have been hearing of some issues with the new iPad 3rd Gen and the original smart cover. Is there a difference in how the iPad 3 uses the magnets or how they are aligned in the new smart cover.

Great teardown of the iPad 2 Smart Cover, and very well detailed, but missing some dimensional specs I'm really interested in. There are apparently two lengths of these magnets; four of them are 'short' and two of them are 'long'. Can you please specify the dimensions of these magnets? I am particularly interested in the lengths. Fix Your Stuff Community Store. Tools Featured in this Teardown. Introduction A significant portion of the hullabaloo over Apple's iPad 2 is the mysterious Smart Cover.

Join us as we figure out just how smart the Smart Cover really is. Step 1 iPad 2 Smart Cover Teardown. Add a comment. Add Comment Cancel.