JPS53106076A - Revolving speed detector - Google Patents

Revolving speed detector

Info

Publication number
JPS53106076A
JPS53106076A JP2027877A JP2027877A JPS53106076A JP S53106076 A JPS53106076 A JP S53106076A JP 2027877 A JP2027877 A JP 2027877A JP 2027877 A JP2027877 A JP 2027877A JP S53106076 A JPS53106076 A JP S53106076A
Authority
JP
Japan
Prior art keywords
revolving speed
speed detector
time
reference time
commercial
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
JP2027877A
Other languages
Japanese (ja)
Other versions
JPS5539784B2 (en
Inventor
Hiroshi Makihira
Yasuo Nakagawa
Yukio Kenbo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2027877A priority Critical patent/JPS53106076A/en
Publication of JPS53106076A publication Critical patent/JPS53106076A/en
Publication of JPS5539784B2 publication Critical patent/JPS5539784B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE: To eliminate the need for highly accurate reference time generator and detect revolving speeds at high accuracy within a short time by utilizing the waveform period of a commercial a.c. power source as reference time for pulse counting time.
COPYRIGHT: (C)1978,JPO&Japio
JP2027877A 1977-02-28 1977-02-28 Revolving speed detector Granted JPS53106076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2027877A JPS53106076A (en) 1977-02-28 1977-02-28 Revolving speed detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2027877A JPS53106076A (en) 1977-02-28 1977-02-28 Revolving speed detector

Publications (2)

Publication Number Publication Date
JPS53106076A true JPS53106076A (en) 1978-09-14
JPS5539784B2 JPS5539784B2 (en) 1980-10-14

Family

ID=12022691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2027877A Granted JPS53106076A (en) 1977-02-28 1977-02-28 Revolving speed detector

Country Status (1)

Country Link
JP (1) JPS53106076A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142152U (en) * 1986-03-04 1987-09-08
JPH03122525A (en) * 1989-10-05 1991-05-24 Matsushita Electric Ind Co Ltd Detecting device for water level

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142152U (en) * 1986-03-04 1987-09-08
JPH03122525A (en) * 1989-10-05 1991-05-24 Matsushita Electric Ind Co Ltd Detecting device for water level

Also Published As

Publication number Publication date
JPS5539784B2 (en) 1980-10-14

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