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- ...nd current via using an inductive transfer of electricity. Basically, two coils of wire don't touch, but they sit close together (even interleaved) and the23 KB (3,739 words) - 10:43, 30 April 2009
- ...nents and supplies/39121000 Power conditioning equipment/39121010 Magnetic coils62 KB (7,094 words) - 05:52, 8 July 2007
- ...Electrical measuring and testing equipment/41113622 Calibrated inductance coils or boxes142 KB (15,730 words) - 05:57, 8 July 2007
- ...nance imaging MRI products/42201605 Medical magnetic resonance imaging MRI coils45 KB (5,171 words) - 06:06, 8 July 2007
- ...upplies and accessories/44103500 Binding machine supplies/44103504 Binding coils or wire loops31 KB (3,491 words) - 06:20, 8 July 2007
- ...tructural materials and basic shapes/30101900 Coil/30101916 Precious metal coils57 KB (6,145 words) - 05:11, 8 July 2007
- ...nents and supplies/39121000 Power conditioning equipment/39121010 Magnetic coils63 KB (7,094 words) - 05:52, 8 July 2007
- ...Electrical measuring and testing equipment/41113622 Calibrated inductance coils or boxes144 KB (15,730 words) - 13:41, 6 January 2010
- ...nance imaging MRI products/42201605 Medical magnetic resonance imaging MRI coils46 KB (5,171 words) - 06:06, 8 July 2007
- ...upplies and accessories/44103500 Binding machine supplies/44103504 Binding coils or wire loops32 KB (3,491 words) - 06:20, 8 July 2007
- * '''Explore magnets and coils of wire''': [[Measure/Activities/Magnets and Wire]]. For the basics all you :* '''Build your own telephone''' (requires two magnets+coils, the amplifier, and a "driver" circuit).21 KB (3,350 words) - 19:13, 9 March 2016
- ...duction from coil to coil -- best demo requires a signal generator and two coils, but the 3.5KHz signal from the laptop is a quick demo): ...show that it requires a 2500:1 "telephone" amplifer and two guitar-pickup coils, both with magnets inside them (e.g. the 0.25 inch diameter magnets). One c25 KB (4,381 words) - 18:39, 20 May 2008
- ...for a very long time, there's some chance of the insulating varnish on the coils being harmed, but for all practical purposes, the whine is perfectly safe.5 KB (904 words) - 16:02, 29 April 2021