JPS55136892A - Controlling circuit of motor - Google Patents

Controlling circuit of motor

Info

Publication number
JPS55136892A
JPS55136892A JP4287179A JP4287179A JPS55136892A JP S55136892 A JPS55136892 A JP S55136892A JP 4287179 A JP4287179 A JP 4287179A JP 4287179 A JP4287179 A JP 4287179A JP S55136892 A JPS55136892 A JP S55136892A
Authority
JP
Japan
Prior art keywords
motor
rotated
forward direction
occured
actuated
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.)
Pending
Application number
JP4287179A
Other languages
Japanese (ja)
Inventor
Hidemichi Shirai
Yoshimaru Maruno
Hidehiko Okada
Noboru Kamijo
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP4287179A priority Critical patent/JPS55136892A/en
Publication of JPS55136892A publication Critical patent/JPS55136892A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/48—Starting; Accelerating; Decelerating; Arrangements preventing malfunction during drive change

Landscapes

  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To continue the motor operation without damaging a driving device even though trouble has occured by reversing the rotating direction of the motor when the overload of the motor is detected, then, by rotating the motor in the forward direction again. CONSTITUTION:When a down signal of the cassette holder and the like of a VTR is given to a terminal 21, transistors Tr19, Tr15 and Tr18 are turned on through a flip-flop FF22, a motor 10 is rotated in the forward direction, and the cassette holder is lowered. If there is any obstacle in a half way, an emitter resistor 29 for said Tr18 detects this, a Tr30 is turned on, an FF25 is actuated, and the motor 10 is rotated in the reverse direction. Then, an up-limit switch 28 is compressed, the FF25 is stopped, the FF22 is actuated, and the motor is rotated in the forward direction again. Then, the sequence is repeated. Therefore, the driving is continued even though trouble has occured, thereby unattended machine and the like can be smoothly operated.
JP4287179A 1979-04-09 1979-04-09 Controlling circuit of motor Pending JPS55136892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4287179A JPS55136892A (en) 1979-04-09 1979-04-09 Controlling circuit of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4287179A JPS55136892A (en) 1979-04-09 1979-04-09 Controlling circuit of motor

Publications (1)

Publication Number Publication Date
JPS55136892A true JPS55136892A (en) 1980-10-25

Family

ID=12648090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4287179A Pending JPS55136892A (en) 1979-04-09 1979-04-09 Controlling circuit of motor

Country Status (1)

Country Link
JP (1) JPS55136892A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5150264A (en) * 1988-08-30 1992-09-22 Sony Corporation Safety device for controllably driving the cassette holder of a video cassette recorder subjectable to overload

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5150264A (en) * 1988-08-30 1992-09-22 Sony Corporation Safety device for controllably driving the cassette holder of a video cassette recorder subjectable to overload

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