JPS5252395A - Transmission type smoke detector - Google Patents

Transmission type smoke detector

Info

Publication number
JPS5252395A
JPS5252395A JP12748275A JP12748275A JPS5252395A JP S5252395 A JPS5252395 A JP S5252395A JP 12748275 A JP12748275 A JP 12748275A JP 12748275 A JP12748275 A JP 12748275A JP S5252395 A JPS5252395 A JP S5252395A
Authority
JP
Japan
Prior art keywords
transmission type
smoke detector
type smoke
pulses
reduction
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.)
Granted
Application number
JP12748275A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5543719B2 (enExample
Inventor
Shigeru Kajii
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.)
Hochiki Corp
Original Assignee
Hochiki Corp
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 Hochiki Corp filed Critical Hochiki Corp
Priority to JP12748275A priority Critical patent/JPS5252395A/ja
Publication of JPS5252395A publication Critical patent/JPS5252395A/ja
Publication of JPS5543719B2 publication Critical patent/JPS5543719B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
JP12748275A 1975-10-24 1975-10-24 Transmission type smoke detector Granted JPS5252395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12748275A JPS5252395A (en) 1975-10-24 1975-10-24 Transmission type smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12748275A JPS5252395A (en) 1975-10-24 1975-10-24 Transmission type smoke detector

Publications (2)

Publication Number Publication Date
JPS5252395A true JPS5252395A (en) 1977-04-27
JPS5543719B2 JPS5543719B2 (enExample) 1980-11-07

Family

ID=14961021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12748275A Granted JPS5252395A (en) 1975-10-24 1975-10-24 Transmission type smoke detector

Country Status (1)

Country Link
JP (1) JPS5252395A (enExample)

Also Published As

Publication number Publication date
JPS5543719B2 (enExample) 1980-11-07

Similar Documents

Publication Publication Date Title
JPS5386108A (en) Impulse noise limiting circuit
JPS51118395A (en) Semiconductor emitting unit and manufacturing process
JPS522380A (en) Automatic-insertion-of-semiconductor-unit-into- measiromg-socket-and-p ull-out-device
JPS5252395A (en) Transmission type smoke detector
JPS52154159A (en) Door switch of refrigerator
JPS51144152A (en) Power detector
JPS5439535A (en) Average value operation circuit
JPS5252394A (en) Transmission type smoke detector
JPS5213350A (en) Location specifying unit
JPS5269533A (en) Double keying prevention circuit
JPS535673A (en) Alarm electronic watch
JPS52120746A (en) Pulse circuit
JPS52132632A (en) Input/output control circuit
JPS5217715A (en) Control circuit
JPS5235901A (en) Selective station display circuit
JPS52123129A (en) Crosscall power source control circuit
JPS51125977A (en) Illuminator
JPS51134002A (en) Power supply alarm unit
JPS53113333A (en) Combustion control device
JPS5245037A (en) Protection circuit
JPS51128577A (en) Pulse width compare circuit
JPS53108792A (en) Semiconductor light emitting device
JPS53108325A (en) Communication control unit
JPS5423454A (en) Aplifier and oscillator using that oscillator
JPS5439839A (en) Overcurrent detecting element