Solid state d.c. motor control

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4626750
SERIAL NO

06774265

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The system includes a plurality of parallel-connected power field effect transistors arranged for connection in series with the traction motor with a common control circuit connected to the gate electrodes of the field effect transistors to control the on-off cycle of conduction through the field effect transistors. A plurality of parallel connected power diodes are arranged for reverse connection in parallel with the traction motor to serve as freewheeling diodes. The diodes are physically positioned apart from one another and distributed in position among the field effect transistors and each diode is positioned in a similar manner with a group of associated field effect transistors for ease of transfer of current flow between the diode and the associated field effect transistors.

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Patent Owner(s)

Patent OwnerAddress
CURTIS INSTRUMENTS INC200 KISCO AVENUE MT KISCO NY 10549

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Post, Stephen F Pleasant Hill, CA 8 228

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