Power-supply unit for electronic oven

Details Power-supply unit for electronic oven Power-supply unit for electronic oven

2005-05-10

2005-05-10

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C363S131000, C219S716000

Reexamination Certificate

active

06891738

ABSTRACT:
A Hall element (H) is arranged at an air gap of a choke coil (30). Power semiconductor elements (P1) and (P2) are attached to a heat radiation fin (61) directly by soldering. A rectangular-hollow-shaped metal core (27) is formed by winding a long metal thin plate multiple turns into a rectangular-hollow-shape and is fitted to a bar shaped ferrite core (26) from outside of the primary winding (21) and the secondary winding (22). The inner diameter of one side of the rectangular-hollow-shape core is larger than both outer diameters of the primary winding (21) and the secondary winding (22) and the inner diameter of the other side of the rectangular-hollow-shape core is larger than the height of the primary winding (21) and the secondary winding (22). The rectangular-hollow-shape (27) core is arranged such that an air gap (G) exists between the rectangular-hollow-shape core (27) and the bar shaped ferrite core (26).

REFERENCES:
patent: 5208432 (1993-05-01), Han
patent: 5451750 (1995-09-01), An
patent: 6040688 (2000-03-01), Strübin
patent: 6388899 (2002-05-01), Suenaga et al.
patent: 6449178 (2002-09-01), Sakai et al.
patent: 6617685 (2003-09-01), Bollesen

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