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JPS5445183A - Speed signal former - Google Patents

Speed signal former

Info

Publication number
JPS5445183A
JPS5445183A JP11179777A JP11179777A JPS5445183A JP S5445183 A JPS5445183 A JP S5445183A JP 11179777 A JP11179777 A JP 11179777A JP 11179777 A JP11179777 A JP 11179777A JP S5445183 A JPS5445183 A JP S5445183A
Authority
JP
Japan
Prior art keywords
transistors
thru
current source
constant current
transistor
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
JP11179777A
Other languages
Japanese (ja)
Other versions
JPS5937782B2 (en
Inventor
Kazuo Arai
Shingi Yokobori
Takuji Kadota
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP52111797A priority Critical patent/JPS5937782B2/en
Publication of JPS5445183A publication Critical patent/JPS5445183A/en
Publication of JPS5937782B2 publication Critical patent/JPS5937782B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)

Abstract

PURPOSE:To readily obtain speed signals optimum for speed and torque control without using intricate circuits by combining n sets of differential amplifiers each comprising one input terminal, two transistors and one constant current source. CONSTITUTION:A currnt mirror circuit constitued by transistors Q20, Q21 is connected to three sets of differetial amplifies consisting of input terminals T1 thru T3, transistors Q14 thru Q19 and constant current sources I2 thru I4, and a conconstant current source I5 is connected to the collector of the transistor Q21. Further, a grounded-emitter type transistor inverter constituted by a transistor Q22 and a resistance R4 is connected. Then, when the sum of the collector currents of the transistors Q22, transistors Q15, Q17, Q19 becomes equal to the current value of the constant current source I5, changing-over of conduction and cutoff are performed and this coincided with input signal, by which the variations in the impulse rations of output voltage wavefomes are eliminated and periodic modulation is suppressed.
JP52111797A 1977-09-16 1977-09-16 Speed signal forming device Expired JPS5937782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52111797A JPS5937782B2 (en) 1977-09-16 1977-09-16 Speed signal forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52111797A JPS5937782B2 (en) 1977-09-16 1977-09-16 Speed signal forming device

Publications (2)

Publication Number Publication Date
JPS5445183A true JPS5445183A (en) 1979-04-10
JPS5937782B2 JPS5937782B2 (en) 1984-09-12

Family

ID=14570387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52111797A Expired JPS5937782B2 (en) 1977-09-16 1977-09-16 Speed signal forming device

Country Status (1)

Country Link
JP (1) JPS5937782B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780562A (en) * 1980-11-10 1982-05-20 Fuji Electric Co Ltd Phase detecting binarizing device
JPS57158561A (en) * 1981-03-02 1982-09-30 Siemens Ag Rotational frequency detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0351980Y2 (en) * 1985-06-11 1991-11-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780562A (en) * 1980-11-10 1982-05-20 Fuji Electric Co Ltd Phase detecting binarizing device
JPS57158561A (en) * 1981-03-02 1982-09-30 Siemens Ag Rotational frequency detector

Also Published As

Publication number Publication date
JPS5937782B2 (en) 1984-09-12

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Legal Events

Date Code Title Description
A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20050908