FR2280260A1 - Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode - Google Patents

Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode

Info

Publication number
FR2280260A1
FR2280260A1 FR7425553A FR7425553A FR2280260A1 FR 2280260 A1 FR2280260 A1 FR 2280260A1 FR 7425553 A FR7425553 A FR 7425553A FR 7425553 A FR7425553 A FR 7425553A FR 2280260 A1 FR2280260 A1 FR 2280260A1
Authority
FR
France
Prior art keywords
transistor
power transistor
zener diode
stepping motor
switching circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7425553A
Other languages
French (fr)
Other versions
FR2280260B3 (en
Inventor
Pierre-Regis Marie Hen Irissou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATAC SA
Original Assignee
ATAC SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ATAC SA filed Critical ATAC SA
Priority to FR7425553A priority Critical patent/FR2280260A1/en
Publication of FR2280260A1 publication Critical patent/FR2280260A1/en
Application granted granted Critical
Publication of FR2280260B3 publication Critical patent/FR2280260B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
    • H02P8/12—Control or stabilisation of current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

The switching circuit employs a power transistor (3) with the emitter collector path connected in series with one or more inductive windings (1) energised for rotating the rotor of the stepping motor. The inductive winding (1) is connected at one side to the positive terminal of the DC supply and the emitter of the npn transistor (3) connected to the negative terminal of the supply. The transistor (3) has a Zener diode (4) of opposite polarity connected across it, with the inverse diode threshold voltage being greater than the supply voltage, but less than the breakdown voltage of the transistor. The power transistor (3) has its base supplied from the collector of a switching transistor of opposite type and the latter may act as the Zener diode, when a relatively low resistor is connected across the base and the emitter of the power transistor.
FR7425553A 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode Granted FR2280260A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7425553A FR2280260A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7425553A FR2280260A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode

Publications (2)

Publication Number Publication Date
FR2280260A1 true FR2280260A1 (en) 1976-02-20
FR2280260B3 FR2280260B3 (en) 1977-05-20

Family

ID=9141595

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425553A Granted FR2280260A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor shunted by Zener diode

Country Status (1)

Country Link
FR (1) FR2280260A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027056A2 (en) * 1979-10-09 1981-04-15 Ford Motor Company Limited A circuit for extending the range of operation of an electromagnetic fuel injector
US6111497A (en) * 1999-03-12 2000-08-29 Telefonaktiebolaget Lm Ericsson Buzzer with Zener diode in discharge path

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027056A2 (en) * 1979-10-09 1981-04-15 Ford Motor Company Limited A circuit for extending the range of operation of an electromagnetic fuel injector
EP0027056A3 (en) * 1979-10-09 1981-10-07 Ford Motor Company Limited Method of controlling an electromagnetic fuel injector
US6111497A (en) * 1999-03-12 2000-08-29 Telefonaktiebolaget Lm Ericsson Buzzer with Zener diode in discharge path

Also Published As

Publication number Publication date
FR2280260B3 (en) 1977-05-20

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