JPS5613539A - Electric-power turning-off circuit - Google Patents

Electric-power turning-off circuit

Info

Publication number
JPS5613539A
JPS5613539A JP9004679A JP9004679A JPS5613539A JP S5613539 A JPS5613539 A JP S5613539A JP 9004679 A JP9004679 A JP 9004679A JP 9004679 A JP9004679 A JP 9004679A JP S5613539 A JPS5613539 A JP S5613539A
Authority
JP
Japan
Prior art keywords
voltage
transistor
turns
capacitor
circuit
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
JP9004679A
Other languages
Japanese (ja)
Inventor
Takamitsu Sunaga
Satoru Honda
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP9004679A priority Critical patent/JPS5613539A/en
Publication of JPS5613539A publication Critical patent/JPS5613539A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a load from being applied with an unstable voltage by immediately discharging a voltage supply capacitor, connected to a resistance in series, through a transistor that turns off on a voltage drop.
CONSTITUTION: A fixed voltage at point A is supplied to a load such as decoder 9 through capacitor C2 connected in series to resistance R1. As the voltage of electric power circuit 22 falls, transistor Q2 of turning-off circuit 17 turns off immediately and transistor Q3 also turns off. Consequently, the electric charge of capacitor C3 turns on transistor Q4 and capacitor C2 is immediately discharged. As a result, the load is prevented from being applied with an unstable voltage, preventing malfunction.
COPYRIGHT: (C)1981,JPO&Japio
JP9004679A 1979-07-16 1979-07-16 Electric-power turning-off circuit Pending JPS5613539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9004679A JPS5613539A (en) 1979-07-16 1979-07-16 Electric-power turning-off circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9004679A JPS5613539A (en) 1979-07-16 1979-07-16 Electric-power turning-off circuit

Publications (1)

Publication Number Publication Date
JPS5613539A true JPS5613539A (en) 1981-02-09

Family

ID=13987680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9004679A Pending JPS5613539A (en) 1979-07-16 1979-07-16 Electric-power turning-off circuit

Country Status (1)

Country Link
JP (1) JPS5613539A (en)

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