JPS57160391A - Rotation reversing circuit of motor under overload - Google Patents

Rotation reversing circuit of motor under overload

Info

Publication number
JPS57160391A
JPS57160391A JP56045432A JP4543281A JPS57160391A JP S57160391 A JPS57160391 A JP S57160391A JP 56045432 A JP56045432 A JP 56045432A JP 4543281 A JP4543281 A JP 4543281A JP S57160391 A JPS57160391 A JP S57160391A
Authority
JP
Japan
Prior art keywords
motor
capstan
overload
reversing
rotation
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
JP56045432A
Other languages
Japanese (ja)
Inventor
Itsuki Ban
Yukio Shinmon
Akihiro Nakajima
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.)
Sekoh Giken KK
Secoh Giken Co Ltd
Original Assignee
Sekoh Giken KK
Secoh Giken Co Ltd
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 Sekoh Giken KK, Secoh Giken Co Ltd filed Critical Sekoh Giken KK
Priority to JP56045432A priority Critical patent/JPS57160391A/en
Publication of JPS57160391A publication Critical patent/JPS57160391A/en
Pending 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To make possible reversing rotation using one capstan by generating a pulse when an overload condition continued for longer than a certain length of time to actuate a flip-flop circuit thereby reversing the rotating direction of a motor. CONSTITUTION:An armature current of a direct current motor 1 that drives a capstan used in a magnetic record reproduction device is detected by a resistor 10 in an overload detector circuit 4, which controls transistors 11, 16 to produce an output with a resistor 18, a condenser 19 and a Zener diode 20 when an overload lasts longer than a certain length of time. This output is fed to a flip-flop circuit 3 to be inverted which in turn changes the direction of the current of the motor 1 hence the direction of the rotation of the motor. One capstan thus automatically performs reversing action utilizing increase of the load of the motor 1 at the end of a tape.
JP56045432A 1981-03-30 1981-03-30 Rotation reversing circuit of motor under overload Pending JPS57160391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045432A JPS57160391A (en) 1981-03-30 1981-03-30 Rotation reversing circuit of motor under overload

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045432A JPS57160391A (en) 1981-03-30 1981-03-30 Rotation reversing circuit of motor under overload

Publications (1)

Publication Number Publication Date
JPS57160391A true JPS57160391A (en) 1982-10-02

Family

ID=12719138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045432A Pending JPS57160391A (en) 1981-03-30 1981-03-30 Rotation reversing circuit of motor under overload

Country Status (1)

Country Link
JP (1) JPS57160391A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165881U (en) * 1984-10-04 1986-05-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165881U (en) * 1984-10-04 1986-05-06

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