JPS5724123A - Reset circuit - Google Patents

Reset circuit

Info

Publication number
JPS5724123A
JPS5724123A JP9890580A JP9890580A JPS5724123A JP S5724123 A JPS5724123 A JP S5724123A JP 9890580 A JP9890580 A JP 9890580A JP 9890580 A JP9890580 A JP 9890580A JP S5724123 A JPS5724123 A JP S5724123A
Authority
JP
Japan
Prior art keywords
power supply
nonconductive
capacitor
trq6
voltage vcc
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
JP9890580A
Other languages
Japanese (ja)
Inventor
Kikuo Kato
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9890580A priority Critical patent/JPS5724123A/en
Publication of JPS5724123A publication Critical patent/JPS5724123A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
    • H03K2017/226—Modifications for ensuring a predetermined initial state when the supply voltage has been applied in bipolar transistor switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To perform normal operation when power supply is applied again, by compulsively discharging at power supply interruption a capacitor of a circuit producing a reset pulse at power supply application. CONSTITUTION:When a power supply voltage Vcc is applied, a transistor (TR)Q3 is conductive and a capacitor C1 is charged with constant current with a TRQ6. When the power supply voltage Vcc is lowered and a Zener diode ZD1 is turned off, the TRQ3 is nonconductive and a TRQ6 is also nonconductive. Thus, a TRQ8 is nonconductive and the capacitor C1 is discharged.
JP9890580A 1980-07-18 1980-07-18 Reset circuit Pending JPS5724123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9890580A JPS5724123A (en) 1980-07-18 1980-07-18 Reset circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9890580A JPS5724123A (en) 1980-07-18 1980-07-18 Reset circuit

Publications (1)

Publication Number Publication Date
JPS5724123A true JPS5724123A (en) 1982-02-08

Family

ID=14232142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9890580A Pending JPS5724123A (en) 1980-07-18 1980-07-18 Reset circuit

Country Status (1)

Country Link
JP (1) JPS5724123A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243231A (en) * 1991-05-13 1993-09-07 Goldstar Electron Co., Ltd. Supply independent bias source with start-up circuit
US5302861A (en) * 1992-11-25 1994-04-12 National Semiconductor Corporation Power on reset circuit with sharply sloped voltage transfer function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243231A (en) * 1991-05-13 1993-09-07 Goldstar Electron Co., Ltd. Supply independent bias source with start-up circuit
US5302861A (en) * 1992-11-25 1994-04-12 National Semiconductor Corporation Power on reset circuit with sharply sloped voltage transfer function

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