【考案の名称】モータ駆動回路 - Tokai Rika Electric Co., Ltd.

Title:

【考案の名称】モータ駆動回路

Document Type and Number:

Japanese Patent JPH0629399

Kind Code:

U

Abstract:

A motor drive circuit in which a first bipolar transistor is disposed between a ground terminal and one terminal of a motor, and a second bipolar transistor is disposed between the ground terminal and another terminal of the motor. Each of the transistors has a reverse breakdown voltage between an emitter and a collector which is greater than a voltage of a power source and has a reverse-direction hfe which is greater than or equal to a predetermined value. A resistor and a capacitor are disposed in parallel between respective bases of the first and second bipolar transistors and a ground terminal. Potential drawbacks can be prevented even when voltage of reverse polarity is supplied.

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Inventors:

Okada Makoto
Hitoshi Iwata
Katsuya Ogiso

Application Number:

JP6296092U

Publication Date:

April 15, 1994

Filing Date:

September 08, 1992

Export Citation:

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Assignee:

Tokai Rika Electric Co., Ltd.

International Classes:

E05F15/10; E05F15/603; E05F15/611; E05F15/659; E05F15/695; H02H11/00; H02P7/00; H02P7/29; (IPC1-7): H02P7/29; E05F15/10

Attorney, Agent or Firm:

Atsushi Nakajima (2 outside)

Next Patent: ステッピングモーターのストップ機構