h a l f b a k e r yYeah, I wish it made more sense too.
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This is already Baked to a certain extent by winding a coil around a permanent magnet and then passing a current so that the resultant field opposes the permanent magnet. |
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It means that the force can be varied from zero, through P which is the force of the permanent magnet with zero coil current, to P + D where D is the additional force of the coil at maximum current. |
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This is pretty much how remanence relays work. |
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The coil must not heat the core above its Curie point. |
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The "on/off" magnet assemblies linked (well, linked to the link) don't come right out and say it's variable, but it sure looks that way. |
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Would a half-on magnet have East and West poles? |
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East Poles? Blimey, is everyone carving off a chunk of
Ukraine nowadays? |
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It does look likely .. we'll Czech on it and get Baku to you ... |
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