JPS5451276A - Power failure detection indicating circuit - Google Patents

Power failure detection indicating circuit

Info

Publication number
JPS5451276A
JPS5451276A JP11818477A JP11818477A JPS5451276A JP S5451276 A JPS5451276 A JP S5451276A JP 11818477 A JP11818477 A JP 11818477A JP 11818477 A JP11818477 A JP 11818477A JP S5451276 A JPS5451276 A JP S5451276A
Authority
JP
Japan
Prior art keywords
power failure
indicating
commercial
timer
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
JP11818477A
Other languages
Japanese (ja)
Inventor
Shozo Kataoka
Hiroyasu Takeuchi
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 JP11818477A priority Critical patent/JPS5451276A/en
Publication of JPS5451276A publication Critical patent/JPS5451276A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE: To provide an indicating circuit which enables indicating of the genuine failure of commercial power supply during the artificial suspension of the power by connecting a battery of a given voltage to a control end of a given circuit with a commercial power failure indicating element as a load in parallel together with the end of commercial rectified smooth voltage.
CONSTITUTION: When a checkingswitch is opened for inspection, a relay 6 is deenergized to close a normally closed contact 7 thereby actuating a timer 8. At this point, a normally open contact of the timer 8 is opened. This suspends commercial energization of an emergency lamp 3 and with suspension of a relay 14, a contact 15 is closed to allow a battery 13 to turn on an incandescent lamp. At the same time, a checking device not illustrated works to start the measurement of electricity. As a fixed time set by the timer 8 passes by, the related circuit is reenergized to memorize and indicate the results of the checking. If a genuin power failure occur during the checking, the output voltage of a power failure detection indicating circuit is reduced to zero so that the terminal voltage of a smoothing capacitor 19 reduces to zero. This allows a light emitting diode 24 to be energized thereby indicating the power failure
COPYRIGHT: (C)1979,JPO&Japio
JP11818477A 1977-09-30 1977-09-30 Power failure detection indicating circuit Pending JPS5451276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11818477A JPS5451276A (en) 1977-09-30 1977-09-30 Power failure detection indicating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11818477A JPS5451276A (en) 1977-09-30 1977-09-30 Power failure detection indicating circuit

Publications (1)

Publication Number Publication Date
JPS5451276A true JPS5451276A (en) 1979-04-21

Family

ID=14730215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11818477A Pending JPS5451276A (en) 1977-09-30 1977-09-30 Power failure detection indicating circuit

Country Status (1)

Country Link
JP (1) JPS5451276A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020080629A (en) * 2001-04-16 2002-10-26 하임수 Electric power outage detection circuit for electronic ballasts for fluorescent lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020080629A (en) * 2001-04-16 2002-10-26 하임수 Electric power outage detection circuit for electronic ballasts for fluorescent lamps

Similar Documents

Publication Publication Date Title
SE8803841D0 (en) INDEPENDENT EMERGENCY EMERGENCY LIGHTING SYSTEM
JPS55140622A (en) Electronically controlled direction indicator
FR2517067B1 (en)
EP0358417A3 (en) Improvements in or relating to search lamps and torches
JPS57189073A (en) Checker for relay
JPS5451278A (en) Checker for emergency lamp
JPS5451277A (en) Power failure detection indicating circuit for emergency lamp
GB2004048A (en) Standby battery lamp for use during mains failure
JPS6013251Y2 (en) emergency lighting device
JPS5713517A (en) Load operation inspection device
JPS54109266A (en) Lighting equipment
JPS5469269A (en) Emergency lamp lighting system
JPS5766311A (en) Automatic testing device
JPS56123559A (en) Safety device for copy machine using flash lamp
FR2232830A1 (en) Indicating circuit for defective electric fuses - for use with electroluminescent diode, increases reliability
JPS5928270B2 (en) Storage battery performance inspection device for emergency lighting equipment
JPS5238272A (en) Device for cheking operating condition of electric circuits
GB468022A (en) An automatic emergency lighting set for use in connection with electric light mains
JPS5451281A (en) Checker for emergency lamp
JPS5457374A (en) Emergency lamp system
JPS57190773A (en) Balance monitoring device for welding current
JPS6325870Y2 (en)
SU98151A1 (en) Instrument for measuring the response time of the starting relay
KR790001901Y1 (en) Switch circuit for power saving
JPS57119260A (en) Detecting method for trouble on dc solenoid device