FR2280259A1 - Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base - Google Patents

Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base

Info

Publication number
FR2280259A1
FR2280259A1 FR7425554A FR7425554A FR2280259A1 FR 2280259 A1 FR2280259 A1 FR 2280259A1 FR 7425554 A FR7425554 A FR 7425554A FR 7425554 A FR7425554 A FR 7425554A FR 2280259 A1 FR2280259 A1 FR 2280259A1
Authority
FR
France
Prior art keywords
transistor
base
switching circuit
power transistor
stepping motor
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
FR7425554A
Other languages
French (fr)
Other versions
FR2280259B1 (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 FR7425554A priority Critical patent/FR2280259A1/en
Publication of FR2280259A1 publication Critical patent/FR2280259A1/en
Application granted granted Critical
Publication of FR2280259B1 publication Critical patent/FR2280259B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

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

Abstract

The switching circuit employs a power transistor (5) via which an inductance (2) e.g. the motor energising winding, is connected to a DC source. The transistor emitter is directly coupled to one side of the inductance (2), while the transistor base is connected to the other side of the inductance (2) via an opposing diode (8) and a series variable resistor (13). Pref. the power transistor is of pnp type, with its collector connected to earth and with the base connected to the collector of a control transistor (9) of npn type, the base of this transistor receiving the switching pulses. The power transistor (5) may be protected by a relatively low resistor (14) connected between the emitter and base. The switching circuit may be used for a stepping motor used for forwarding a cine film web.
FR7425554A 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base Granted FR2280259A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7425554A FR2280259A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7425554A FR2280259A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base

Publications (2)

Publication Number Publication Date
FR2280259A1 true FR2280259A1 (en) 1976-02-20
FR2280259B1 FR2280259B1 (en) 1977-01-07

Family

ID=9141596

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425554A Granted FR2280259A1 (en) 1974-07-23 1974-07-23 Electronic switching circuit for stepping motor - has power transistor and diode connected to transistor base

Country Status (1)

Country Link
FR (1) FR2280259A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071133B (en) * 1958-08-08 1959-12-17 Standard Efcktrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen ARRANGEMENT FOR LIMITING DISCONNECTING VOLTAGES AT INDUCTIVITIES IN A SERIES WITH TRANSISTOR SWITCHES
FR1558312A (en) * 1966-08-19 1969-02-28
US3441820A (en) * 1967-08-18 1969-04-29 Gen Time Corp Timing system having electromechanical oscillator with fail-safe improvement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071133B (en) * 1958-08-08 1959-12-17 Standard Efcktrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen ARRANGEMENT FOR LIMITING DISCONNECTING VOLTAGES AT INDUCTIVITIES IN A SERIES WITH TRANSISTOR SWITCHES
FR1558312A (en) * 1966-08-19 1969-02-28
US3441820A (en) * 1967-08-18 1969-04-29 Gen Time Corp Timing system having electromechanical oscillator with fail-safe improvement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PAGE 425 *
REVUE US "IBM TECHNICAL DISCLOSURE BULLETIN", VOLUME 11, NO. 4, SEPTEMBRE 1968, ARTICLE: "MAGNET DRIVER AND PULSE-WIDTH CONTROLLER" MELNYK *

Also Published As

Publication number Publication date
FR2280259B1 (en) 1977-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse