JPH0277650U - - Google Patents

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Publication number
JPH0277650U
JPH0277650U JP15676788U JP15676788U JPH0277650U JP H0277650 U JPH0277650 U JP H0277650U JP 15676788 U JP15676788 U JP 15676788U JP 15676788 U JP15676788 U JP 15676788U JP H0277650 U JPH0277650 U JP H0277650U
Authority
JP
Japan
Prior art keywords
circuit
leakage detection
oscillation circuit
liquid leakage
generates
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
JP15676788U
Other languages
Japanese (ja)
Other versions
JPH0620122Y2 (en
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 filed Critical
Priority to JP1988156767U priority Critical patent/JPH0620122Y2/en
Publication of JPH0277650U publication Critical patent/JPH0277650U/ja
Application granted granted Critical
Publication of JPH0620122Y2 publication Critical patent/JPH0620122Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

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

第１図はこの考案の構成を示すブロツク図であ
る。第２図と第３図はこの考案の実施例である漏
液検知装置の回路図であり、特に第３図は第２図
に示す半導体集積回路７内の回路も含めて表した
全体の回路図である。 FIG. 1 is a block diagram showing the configuration of this invention. 2 and 3 are circuit diagrams of a liquid leakage detection device that is an embodiment of this invention. In particular, FIG. 3 shows the entire circuit including the circuit inside the semiconductor integrated circuit 7 shown in FIG. It is a diagram.

Claims (1)

【実用新案登録請求の範囲】 非絶縁性液体の存在によつて電気抵抗が変化す
る漏洩検出センサと、 この漏液検出センサの電気抵抗を直流電圧に変
換する電圧変換回路と、 この電圧変換回路の出力電圧を基準電圧と比較
する比較回路と、 可聴周波数帯を含む信号を発生する発振回路と
、 前記比較回路が漏液状態を検知しているとき前
記発振回路出力を有効にして発音体を駆動する出
力制御回路とを備え、 少なくとも前記比較回路と発振回路を単一の半
導体集積回路内に構成したことを特徴とする漏液
検知装置。[Claims for Utility Model Registration] A leakage detection sensor whose electrical resistance changes due to the presence of a non-insulating liquid, a voltage conversion circuit that converts the electrical resistance of this liquid leakage detection sensor into a DC voltage, and this voltage conversion circuit. an oscillation circuit that generates a signal including an audible frequency band; and an oscillation circuit that generates a signal including an audible frequency band, and when the comparison circuit detects a liquid leakage state, enables the output of the oscillation circuit to activate the sounding body. A liquid leakage detection device comprising: a driving output control circuit; and at least the comparison circuit and the oscillation circuit are configured in a single semiconductor integrated circuit.
JP1988156767U 1988-11-30 1988-11-30 Leak detection device Expired - Lifetime JPH0620122Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988156767U JPH0620122Y2 (en) 1988-11-30 1988-11-30 Leak detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988156767U JPH0620122Y2 (en) 1988-11-30 1988-11-30 Leak detection device

Publications (2)

Publication Number Publication Date
JPH0277650U true JPH0277650U (en) 1990-06-14
JPH0620122Y2 JPH0620122Y2 (en) 1994-05-25

Family

ID=31435603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988156767U Expired - Lifetime JPH0620122Y2 (en) 1988-11-30 1988-11-30 Leak detection device

Country Status (1)

Country Link
JP (1) JPH0620122Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04301732A (en) * 1991-03-29 1992-10-26 Tatsuta Electric Wire & Cable Co Ltd Leakage detection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797265U (en) * 1980-12-03 1982-06-15
JPS61101712A (en) * 1984-10-23 1986-05-20 Matsushita Electric Ind Co Ltd Cartridge tank with full amount informing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797265U (en) * 1980-12-03 1982-06-15
JPS61101712A (en) * 1984-10-23 1986-05-20 Matsushita Electric Ind Co Ltd Cartridge tank with full amount informing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04301732A (en) * 1991-03-29 1992-10-26 Tatsuta Electric Wire & Cable Co Ltd Leakage detection device

Also Published As

Publication number Publication date
JPH0620122Y2 (en) 1994-05-25

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term