10-02-2014, 07:48 PM
(This post was last modified: 10-02-2014, 07:48 PM by John M0GLN.)
Its something I've puzzled about for years, if you have a bar magnet and revolve it in front of a coil as a simple dynamo, as the N pole approaches the coil a voltage will be induced, say a +V, then as it revolves further this V would reduce to zero and as the S pole approaches the V would go to -V, this would be an AC voltage, but what if instead of revolving 360° the magnet reverses direction after 90° back to its original starting point? The induced voltage will have risen from 0V to +V and back to 0V, if this was repeated wouldn't this just be a stream of DC pulses as Lawrence asks about in his post?
John
John
