H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/122 (2006.01) F27D 11/00 (2006.01)
Patent
CA 2273200
A fault tolerant power supply circuit for a series resonant load having an inductive impedance. The power supply circuit includes alternately conducting first and second sets of switches for supplying current to the load in alternating directions. One terminal of the load is connected to a point intermediate the switches. A protective coil is connected in series with the load and the point intermediate said switches. In one embodiment of the invention, a di/dt reactor is connected in series between the switches. In that embodiment, one end of the protective coil is connected to the load and the other end of the protective coil is connected to the di/dt reactor at a point intermediate the switches.
Fishman Oleg S.
Mortimer John H.
Ranlof Richard A.
Rotman Simeon Z.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Inductotherm Corp.
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