JPS5776601A - Monitoring circuit for electric power break - Google Patents

Monitoring circuit for electric power break

Info

Publication number
JPS5776601A
JPS5776601A JP55153090A JP15309080A JPS5776601A JP S5776601 A JPS5776601 A JP S5776601A JP 55153090 A JP55153090 A JP 55153090A JP 15309080 A JP15309080 A JP 15309080A JP S5776601 A JPS5776601 A JP S5776601A
Authority
JP
Japan
Prior art keywords
power
relay
trq1
electric power
monitoring circuit
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
JP55153090A
Other languages
Japanese (ja)
Inventor
Yukio Uchida
Yasuo Anno
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55153090A priority Critical patent/JPS5776601A/en
Publication of JPS5776601A publication Critical patent/JPS5776601A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To reduce the size of a device by monitoring several kinds of electric power breaks by one detector by releasing a relay when one of the 1st, 2nd and 3rd power voltages is broken. CONSTITUTION:A power voltage V1 is divided by resistances R0 and R1 and applied to a point P to be supplied to the base of a transistor (TR)Q0 via a resistance R2. When the TRQ0 turns on, a point C0 is grounded and a current flows from a power voltage source V2 to resistance R3 and R4 to turn on a TRQ1. As the TRQ1 turns on, a current flows from the power source V2 to a power source V3 through the TRQ1 and resistances R5 and R6. When power voltages V1, V2 and V3 are applied, a relay A is held in an operation state. If, however, some power source is turned off, the relay A is released to detect the power break.
JP55153090A 1980-10-31 1980-10-31 Monitoring circuit for electric power break Pending JPS5776601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153090A JPS5776601A (en) 1980-10-31 1980-10-31 Monitoring circuit for electric power break

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153090A JPS5776601A (en) 1980-10-31 1980-10-31 Monitoring circuit for electric power break

Publications (1)

Publication Number Publication Date
JPS5776601A true JPS5776601A (en) 1982-05-13

Family

ID=15554744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153090A Pending JPS5776601A (en) 1980-10-31 1980-10-31 Monitoring circuit for electric power break

Country Status (1)

Country Link
JP (1) JPS5776601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08250361A (en) * 1994-12-01 1996-09-27 Vlt Corp Method of setting inductance value of magnetic element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08250361A (en) * 1994-12-01 1996-09-27 Vlt Corp Method of setting inductance value of magnetic element

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