JPS57183654A - Driving device of reel motor - Google Patents

Driving device of reel motor

Info

Publication number
JPS57183654A
JPS57183654A JP56068783A JP6878381A JPS57183654A JP S57183654 A JPS57183654 A JP S57183654A JP 56068783 A JP56068783 A JP 56068783A JP 6878381 A JP6878381 A JP 6878381A JP S57183654 A JPS57183654 A JP S57183654A
Authority
JP
Japan
Prior art keywords
circuit
tape
constant speed
constant
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.)
Pending
Application number
JP56068783A
Other languages
Japanese (ja)
Inventor
Manabu Sawaki
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP56068783A priority Critical patent/JPS57183654A/en
Publication of JPS57183654A publication Critical patent/JPS57183654A/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

Landscapes

  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To perform both the constant current driving and the constant speed driving of a reel motor in good condition, by carrying out the switching according to the operation mode of a tape deck. CONSTITUTION:A bridge circuit 10 is formed by using a reel motor 1 and a driving current detecting resistance R1 for the sides respectively and inserting a reference voltage source 2 to the side which is opposed to the resistance R1. A differential amplifier 3 uses the difference of potential between the detecting terminals B and C of the circuit 10 for the differential input; and a differential amplifier 6 uses the both-end voltage of the resistance R1 for the differential input. The constant speed travelling and the high speed travelling of a tape are switched in accordance with the operation of switches 4 and 8. Then the output of the amplifier 3 or 6 is supplied to the feed terminal A of the circuit 10 via a current amplifier 5. Furthermore each constant of the circuit 10 is set so that the load characteristics of the motor 1 bring about the coincidence between the start and end points of the tape winding with a characteristic curve which keeps the constant speed for the travelling of the tape. Thus the constant speed control is performed for the motor in the high speed driving mode.
JP56068783A 1981-05-07 1981-05-07 Driving device of reel motor Pending JPS57183654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56068783A JPS57183654A (en) 1981-05-07 1981-05-07 Driving device of reel motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56068783A JPS57183654A (en) 1981-05-07 1981-05-07 Driving device of reel motor

Publications (1)

Publication Number Publication Date
JPS57183654A true JPS57183654A (en) 1982-11-12

Family

ID=13383668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56068783A Pending JPS57183654A (en) 1981-05-07 1981-05-07 Driving device of reel motor

Country Status (1)

Country Link
JP (1) JPS57183654A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010246287A (en) * 2009-04-07 2010-10-28 Renesas Electronics Corp Current control circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217812B2 (en) * 1973-03-12 1977-05-18
JPS5266914A (en) * 1975-12-01 1977-06-02 Hitachi Ltd Speed controlling circuit of dc motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217812B2 (en) * 1973-03-12 1977-05-18
JPS5266914A (en) * 1975-12-01 1977-06-02 Hitachi Ltd Speed controlling circuit of dc motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010246287A (en) * 2009-04-07 2010-10-28 Renesas Electronics Corp Current control circuit

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