H - Electricity – 01 – L
Patent
H - Electricity
01
L
328/186, 356/31
H01L 29/74 (2006.01)
Patent
CA 1169978
ABSTRACT OF THE DISCLOSURE A power semiconductor switching device comprises a first transistor having semiconductor layers whose conductivity types are alternately different in a first pattern and an emit- ter connected to one end of a main circuit including a load, a second transistor having a collector connected to the base of the first transistor, a base connected to the collector of the first transistor, and an emitter connected to the other end of the main circuit, and semiconductor layers whose conductivity types are alternately different in a second pattern, and a con- trol transistor having a pair of main electrodes connected in parallel between the base and the emitter of at least one tran- sistor in the first and second transistors to control load cur- rent passing between the emitter of the first transistor and the emitter of the second transistor by control of the base.
397108
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
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