Electrical supply circuit for a load such as a magnetron

Details Electrical supply circuit for a load such as a magnetron Electrical supply circuit for a load such as a magnetron

1990-12-19

1993-09-07

Stephan, Steven L.

Electric heating

Metal heating

Of cylinders

363 28, 315106, H05B 4114

Patent

active

052431630

ABSTRACT:
Supply circuit adapted to supply a magnetron (1) and comprising a high loss inductive voltage increasing transformer (8) whose primary winding (13) is mounted in series with a commutation element (14) adapted to chop the voltage and whose secondary winding (19) is connected to the load (1). The circuit comprises also a self inductor (17) mounted in series with the primary winding (13) of the transformer (8), as well as a condenser (18) connected in parallel to the primary winding. The commutation element is a unidirectional current gate (14), and the secondary winding (19) of the transformer (8) is directly connected to the load (1). The circuit is useful, for example, in microwave ovens.

REFERENCES:
patent: 4069449 (1978-01-01), Farnsworth
patent: 4076996 (1978-02-01), Maehara
patent: 4318165 (1982-03-01), Kornrumpf et al.
patent: 4885506 (1989-12-01), Nilssen
patent: 5091617 (1992-02-01), Maehara et al.

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