JPS5844643U - Dettman timer - Google Patents

Dettman timer

Info

Publication number
JPS5844643U
JPS5844643U JP13708081U JP13708081U JPS5844643U JP S5844643 U JPS5844643 U JP S5844643U JP 13708081 U JP13708081 U JP 13708081U JP 13708081 U JP13708081 U JP 13708081U JP S5844643 U JPS5844643 U JP S5844643U
Authority
JP
Japan
Prior art keywords
transistor
capacitor
turned
timer
microcomputer
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
JP13708081U
Other languages
Japanese (ja)
Inventor
大江　秀美
Original Assignee
日本電気ホームエレクトロニクス株式会社
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 日本電気ホームエレクトロニクス株式会社 filed Critical 日本電気ホームエレクトロニクス株式会社
Priority to JP13708081U priority Critical patent/JPS5844643U/en
Publication of JPS5844643U publication Critical patent/JPS5844643U/en
Pending legal-status Critical Current

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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) [Summary] 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 the drawing]

第１図は本考案によるデツトマンタイマの一実施例を示
す回路図、第２図ａ、　　ｂは第１図に示す回路の各部
動作波形図である。 １・・・マイクロコンピュータ、２．６・・・トランジ
スタ、４・・・コンデンサ、５．１５・・・インバータ
、１１・・・比較器、１４・・・オアゲート、３．７．
−９゜１０．１２．１３・・・抵抗。FIG. 1 is a circuit diagram showing an embodiment of a dead man timer according to the present invention, and FIGS. 2a and 2b are operation waveform diagrams of each part of the circuit shown in FIG. 1. 1... Microcomputer, 2.6... Transistor, 4... Capacitor, 5.15... Inverter, 11... Comparator, 14... OR gate, 3.7.
-9°10.12.13...Resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一マイクロコンピュータからループ処理に対応して発生
される周期信号によりオンとなる第１トランジスタと、
前記第１トランジスタのオンによって充電される抵抗と
コンデンサの直列体からなる充電回路と、前記周期信号
の反転信号によりオンとなる第２トランジスタと、前記
第２トランジスタを介して前記コンデンサの両端間に接
続された放電用の抵抗と、前記コンデンサの両端電位を
入力として、上限値部よび下限値を越えた時点にマイク
ロコンピュータにリセット信号を供給するウィンドコン
パレータとを備えたデツトマンタイマ。a first transistor that is turned on by a periodic signal generated from a microcomputer in response to loop processing;
a charging circuit consisting of a series body of a resistor and a capacitor that are charged when the first transistor is turned on; a second transistor that is turned on by an inverted signal of the periodic signal; and a charging circuit that is connected between both ends of the capacitor via the second transistor. A dead man timer comprising a discharge resistor connected to the capacitor, and a window comparator which inputs the potential across the capacitor and supplies a reset signal to a microcomputer when the upper limit value and the lower limit value are exceeded.
JP13708081U 1981-09-17 1981-09-17 Dettman timer Pending JPS5844643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13708081U JPS5844643U (en) 1981-09-17 1981-09-17 Dettman timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13708081U JPS5844643U (en) 1981-09-17 1981-09-17 Dettman timer

Publications (1)

Publication Number Publication Date
JPS5844643U true JPS5844643U (en) 1983-03-25

Family

ID=29930374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13708081U Pending JPS5844643U (en) 1981-09-17 1981-09-17 Dettman timer

Country Status (1)

Country Link
JP (1) JPS5844643U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628673A (en) * 1985-07-05 1987-01-16 Matsushita Electric Ind Co Ltd Detection circuit for sound multiplexing signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628673A (en) * 1985-07-05 1987-01-16 Matsushita Electric Ind Co Ltd Detection circuit for sound multiplexing signal

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