Disk-type generator

This accessory consists of a administering flywheel alternating in a alluring acreage with one electrical acquaintance abreast the arbor and the added abreast the periphery. It has been acclimated for breeding actual aerial currents at low voltages in applications such as welding, electrolysis and railgun research. In pulsed activity applications, the angular drive of the rotor is acclimated to abundance activity over a continued aeon and again absolution it in a abbreviate time.

In adverse to added types of generators, the achievement voltage never changes polarity. The allegation break after-effects from the Lorentz force on the chargeless accuse in the disk. The motion is azimuthal and the acreage is axial, so the electromotive force is radial. The electrical contacts are usually fabricated through a "brush" or blooper ring, which after-effects in ample losses at the low voltages generated. Some of these losses can be bargain by application mercury or added calmly liquified metal or admixture (gallium, NaK) as the "brush", to accommodate about ceaseless electrical contact.

If the alluring acreage is provided by a abiding magnet, the architect works behindhand of whether the allurement is anchored to the stator or rotates with the disc. Before the analysis of the electron and the Lorentz force law, the abnormality was baffling and was accepted as the Faraday paradox.