JPS58127320U - Circuit for burning off hot wire deposits in hot wire flowmeters - Google Patents

Circuit for burning off hot wire deposits in hot wire flowmeters

Info

Publication number
JPS58127320U
JPS58127320U JP2274182U JP2274182U JPS58127320U JP S58127320 U JPS58127320 U JP S58127320U JP 2274182 U JP2274182 U JP 2274182U JP 2274182 U JP2274182 U JP 2274182U JP S58127320 U JPS58127320 U JP S58127320U
Authority
JP
Japan
Prior art keywords
hot wire
circuit
deposits
burning
flowmeters
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
JP2274182U
Other languages
Japanese (ja)
Inventor
宇津木　晃
Original Assignee
日本電子機器株式会社
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 日本電子機器株式会社 filed Critical 日本電子機器株式会社
Priority to JP2274182U priority Critical patent/JPS58127320U/en
Publication of JPS58127320U publication Critical patent/JPS58127320U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来例を示す回路図、第２図は本考案）　　の
第１実施例を示す回路図、第３図は第２実施例τ　　を
示す回路図、第４図は第３実施例を示す回路図、：　　
第５図は同上第３実施例の作動特性を示す線図で）　　
ある。 ′７Ｊ１・・・熱線抵抗、５・・・差動増幅器、９・・
・エンジンキースイッチ、１０・・・トリガ信号発生回
路、１１・・・単安定マルチバイブレータ、１２・・・
正特性サーミスタ。Fig. 1 is a circuit diagram showing a conventional example, Fig. 2 is a circuit diagram showing a first embodiment of the present invention, Fig. 3 is a circuit diagram showing a second embodiment τ, and Fig. 4 is a circuit diagram showing a third embodiment. Schematic, showing:
Figure 5 is a diagram showing the operating characteristics of the third embodiment.)
be. '7J1...Hot wire resistance, 5...Differential amplifier, 9...
・Engine key switch, 10... Trigger signal generation circuit, 11... Monostable multivibrator, 12...
Positive characteristic thermistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 熱線に定時的に大電流を供給して熱線付着物ろ焼切るよ
うにした熱線流量計の熱線付着物焼切ζ用回路において
、該回路中に熱線と同じ雰囲気］に配した正特性サーミ
スタを設け、雰囲気温度に応じて供給電流又はその供給
時間を制御するよどにしたことを特徴とする熱線流量計
の熱線付着乍焼切り用回路。In a hot wire flowmeter circuit for burning off hot wire deposits by periodically supplying a large current to the hot wire to filter out and burn off the hot wire deposits, a positive temperature coefficient thermistor placed in the same atmosphere as the hot wire is installed in the circuit. 1. A hot wire adhesion and burnout circuit for a hot wire flowmeter, characterized in that the supply current or the supply time thereof is controlled according to the ambient temperature.
JP2274182U 1982-02-22 1982-02-22 Circuit for burning off hot wire deposits in hot wire flowmeters Pending JPS58127320U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2274182U JPS58127320U (en) 1982-02-22 1982-02-22 Circuit for burning off hot wire deposits in hot wire flowmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2274182U JPS58127320U (en) 1982-02-22 1982-02-22 Circuit for burning off hot wire deposits in hot wire flowmeters

Publications (1)

Publication Number Publication Date
JPS58127320U true JPS58127320U (en) 1983-08-29

Family

ID=30034803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2274182U Pending JPS58127320U (en) 1982-02-22 1982-02-22 Circuit for burning off hot wire deposits in hot wire flowmeters

Country Status (1)

Country Link
JP (1) JPS58127320U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03122362U (en) * 1990-03-23 1991-12-13

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614116A (en) * 1979-07-06 1981-02-10 Bosch Gmbh Robert Soaking apparatus for air volume measuring resistance of internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614116A (en) * 1979-07-06 1981-02-10 Bosch Gmbh Robert Soaking apparatus for air volume measuring resistance of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03122362U (en) * 1990-03-23 1991-12-13

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