JPS57131069A - Circuit for detecting voltage variation - Google Patents

Circuit for detecting voltage variation

Info

Publication number
JPS57131069A
JPS57131069A JP1733781A JP1733781A JPS57131069A JP S57131069 A JPS57131069 A JP S57131069A JP 1733781 A JP1733781 A JP 1733781A JP 1733781 A JP1733781 A JP 1733781A JP S57131069 A JPS57131069 A JP S57131069A
Authority
JP
Japan
Prior art keywords
voltage
power source
source voltage
circuit
delay 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
JP1733781A
Other languages
English (en)
Inventor
Akio Okude
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1733781A priority Critical patent/JPS57131069A/ja
Publication of JPS57131069A publication Critical patent/JPS57131069A/ja
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
JP1733781A 1981-02-06 1981-02-06 Circuit for detecting voltage variation Pending JPS57131069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1733781A JPS57131069A (en) 1981-02-06 1981-02-06 Circuit for detecting voltage variation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1733781A JPS57131069A (en) 1981-02-06 1981-02-06 Circuit for detecting voltage variation

Publications (1)

Publication Number Publication Date
JPS57131069A true JPS57131069A (en) 1982-08-13

Family

ID=11941229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1733781A Pending JPS57131069A (en) 1981-02-06 1981-02-06 Circuit for detecting voltage variation

Country Status (1)

Country Link
JP (1) JPS57131069A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005176316A (ja) * 2003-10-31 2005-06-30 Bose Corp ポート構成

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005176316A (ja) * 2003-10-31 2005-06-30 Bose Corp ポート構成
US8107662B2 (en) 2003-10-31 2012-01-31 Bose Corporation Porting
US8831263B2 (en) 2003-10-31 2014-09-09 Bose Corporation Porting

Similar Documents

Publication Publication Date Title
KR830009489A (ko) 고정밀 ac전기 에너지 측정시스템
ES460867A1 (es) Mejoras en un detector de voltaje.
KR890015607A (ko) 주파수 검출기
JPS57131069A (en) Circuit for detecting voltage variation
ES8608174A1 (es) Un circuito para detectar el paso a traves de cero de la senal generada por un sensor electromagnetico del tipo de rueda fonica
JPS57182153A (en) Gas detector
JPS54138466A (en) Measuring method of sliding face width of trolley wires
JPS5722568A (en) Fast peak detection circuit
JPS6466569A (en) Method for measuring partial discharge
JPS56123160A (en) Trunk line channel fault monitoring system
JPS6469962A (en) Detecting apparatus of contact resistance
JPS55138665A (en) Detecting system of operation fault of heating source
JPS54162417A (en) Low voltage detector circuit
JPS6423731A (en) Recharger
JPS55162069A (en) Fault detector for electric temperature detector
JPS5591212A (en) Direct current amplifier circuit
JPS56169969A (en) Synchronisum separation circuit
JPS5790145A (en) Measuring device for photo loss
SU1049931A1 (ru) Устройство дл определени среднеквадратического отклонени
JPS5630654A (en) Peak value detection system
JPS5240172A (en) Mean value detection circuit
JPS5796267A (en) Percent level detection circuit
JPS55154422A (en) Reverberation characteristic measuring apparatus
JPS56160611A (en) Analog quantity indicator
JPS5449691A (en) Means for detecting the contact between tool and work