Circuit device for driving an AC electric load

Details Circuit device for driving an AC electric load Circuit device for driving an AC electric load

2005-06-21

2005-06-21

Martin, David (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S800000, C318S807000, C318S809000, C318S812000, C318S813000

Reexamination Certificate

active

06909258

ABSTRACT:
A circuit device is provided for driving an AC electric load, of the type inserted between a terminal of an AC power supply line and a terminal of the electric load to be driven and including a generator of PWM signals to be transferred to the load. This circuit is an AC/AC converter adapted to power supply the load from any level of the power supply line sinusoid and comprising first and second voltage driven switches, the first switch to power supply the load and the second switch to enable loop-back of the current. The switches always operate in a complementary manner, i.e., when the first switch is on, the other is off, and vice versa.

REFERENCES:
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patent: 5506484 (1996-04-01), Munro et al.
patent: 6194881 (2001-02-01), Parker et al.
patent: 6329786 (2001-12-01), Ono
patent: 390 532 (1990-05-01), None
patent: 0 334 100 (1989-09-01), None
patent: 0 891 036 (1999-01-01), None
patent: 1 017 156 (2000-07-01), None

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