Like most electro-mechanical machines, a homopolar motor is reversible : if the conductor is turned mechanically, then it will operate as a homopolar generator, producing a direct current voltage between the two terminals of the conductor.
32.
Like most electro-mechanical machines, a homopolar motor is reversible : if the conductor is turned mechanically, then it will operate as a homopolar generator, producing a direct current voltage between the two terminals of the conductor.
33.
One of these, now known as the " homopolar motor ", caused a continuous circular motion that was engendered by the circular magnetic force around a wire that extended into a pool of mercury wherein was placed a magnet.
34.
B . G . Lamme described in 1912 a homopolar machine rated 2, 000 kW, 260 V, 7, 700 A and 1, 200 rpm with 16 slip rings operating at a peripheral velocity of 67 m / s.
35.
After the war, Oliphant returned to Australia as the first Director of the Research School of Physical Sciences and Engineering at the new Australian National University, where he initiated the design and construction of the world's largest ( 500 megajoule ) homopolar generator.
36.
The small 7.7 MeV cyclotron designed to function as the proton injector was completed in 1955, and the large homopolar generator intended to power the system was first operated in 1962, but by this time work on " The Big Machine " itself had been abandoned.
37.
One example is the homopolar generator ( above left ) : A spinning circular metal disc in a homogeneous magnetic field generates a DC ( constant in time ) EMF . In Faraday's law, EMF is the time-derivative of flux, so a DC EMF is only possible if the magnetic flux is getting uniformly larger and larger perpetually.
