JPS545549A - Voltage supervisory unit - Google Patents

Voltage supervisory unit

Info

Publication number
JPS545549A
JPS545549A JP6986677A JP6986677A JPS545549A JP S545549 A JPS545549 A JP S545549A JP 6986677 A JP6986677 A JP 6986677A JP 6986677 A JP6986677 A JP 6986677A JP S545549 A JPS545549 A JP S545549A
Authority
JP
Japan
Prior art keywords
supervisory unit
voltage supervisory
change over
cycle
voltage
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
JP6986677A
Other languages
Japanese (ja)
Inventor
Hiroshi Sato
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 JP6986677A priority Critical patent/JPS545549A/en
Publication of JPS545549A publication Critical patent/JPS545549A/en
Pending legal-status Critical Current

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  • Protection Of Static Devices (AREA)

Abstract

PURPOSE: To correctly provide a stopping of thyristor chopper at the time of change over point, by a constitution of the controller so as to stop the operation, after outputting a gate signal of a prescribed width when in a change over of square wave voltage from positive cycle to negative cycle.
COPYRIGHT: (C)1979,JPO&Japio
JP6986677A 1977-06-15 1977-06-15 Voltage supervisory unit Pending JPS545549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6986677A JPS545549A (en) 1977-06-15 1977-06-15 Voltage supervisory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6986677A JPS545549A (en) 1977-06-15 1977-06-15 Voltage supervisory unit

Publications (1)

Publication Number Publication Date
JPS545549A true JPS545549A (en) 1979-01-17

Family

ID=13415135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6986677A Pending JPS545549A (en) 1977-06-15 1977-06-15 Voltage supervisory unit

Country Status (1)

Country Link
JP (1) JPS545549A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176722U (en) * 1983-05-11 1984-11-26 増田精機株式会社 Feed vise with feed material detection device
JPS61293712A (en) * 1985-06-18 1986-12-24 Chuo Denki Seisakusho:Kk Cutting machine for bar-shaped material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176722U (en) * 1983-05-11 1984-11-26 増田精機株式会社 Feed vise with feed material detection device
JPS61293712A (en) * 1985-06-18 1986-12-24 Chuo Denki Seisakusho:Kk Cutting machine for bar-shaped material

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