Four-lead monolithic darlington device

Details Four-lead monolithic darlington device Four-lead monolithic darlington device

H - Electricity

03

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328/186

H03K 17/56 (2006.01) F02P 3/04 (2006.01) F02P 3/055 (2006.01) F02P 7/073 (2006.01) H01L 27/082 (2006.01) H03K 17/042 (2006.01) H03K 17/0814 (2006.01) H03K 17/795 (2006.01)

Patent

CA 1132207

-1- ABSTRACT OF THE DISCLOSURE A monolithic Darlington in which the transistors forming the Darlington pair are formed on a substrate together with a fourth terminal in addition to the normal three terminals provided for a Darlington pair, the fourth terminal being connected to the base electrode of the second transistor and the emitter electrode of the first transistor. The addition of the fourth terminal enables a control circuit for controlling the rate of switch off to be connected between the fourth terminal and the commoned collector electrode, this removing the effect which the stored charge on the base electrode of the first transistor has on the switching rate of the Darlington pair, thus enabling a faster switching rate to be achieved.

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