JPS5426697A - Photo electric type smoke detector using battery - Google Patents

Photo electric type smoke detector using battery

Info

Publication number
JPS5426697A
JPS5426697A JP9269277A JP9269277A JPS5426697A JP S5426697 A JPS5426697 A JP S5426697A JP 9269277 A JP9269277 A JP 9269277A JP 9269277 A JP9269277 A JP 9269277A JP S5426697 A JPS5426697 A JP S5426697A
Authority
JP
Japan
Prior art keywords
battery
smoke detector
electric type
type smoke
photo electric
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
JP9269277A
Other languages
Japanese (ja)
Inventor
Kuniharu Tatezuki
Toru Kahara
Yoshinori Suzuki
Takeshi Nakano
Kensaburo Tanemura
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 JP9269277A priority Critical patent/JPS5426697A/en
Publication of JPS5426697A publication Critical patent/JPS5426697A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE: To reduce the wear of cells and to make longer the life, by avoding the dependency on the cell voltage for the amount of illumination, through the connection of the switching element controlled with the output of oscillation circuit to the circuit connecting the light emitting element in series with the constant current circuit.
COPYRIGHT: (C)1979,JPO&Japio
JP9269277A 1977-07-30 1977-07-30 Photo electric type smoke detector using battery Pending JPS5426697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9269277A JPS5426697A (en) 1977-07-30 1977-07-30 Photo electric type smoke detector using battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9269277A JPS5426697A (en) 1977-07-30 1977-07-30 Photo electric type smoke detector using battery

Publications (1)

Publication Number Publication Date
JPS5426697A true JPS5426697A (en) 1979-02-28

Family

ID=14061537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9269277A Pending JPS5426697A (en) 1977-07-30 1977-07-30 Photo electric type smoke detector using battery

Country Status (1)

Country Link
JP (1) JPS5426697A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112097A (en) * 1988-10-21 1990-04-24 Matsushita Electric Works Ltd Intermittent drive type analog circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02112097A (en) * 1988-10-21 1990-04-24 Matsushita Electric Works Ltd Intermittent drive type analog circuit
JPH0632141B2 (en) * 1988-10-21 1994-04-27 松下電工株式会社 Intermittent drive circuit for photoelectric smoke detector

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