JPS551759A - Reset signal generation circuit - Google Patents

Reset signal generation circuit

Info

Publication number
JPS551759A
JPS551759A JP7469378A JP7469378A JPS551759A JP S551759 A JPS551759 A JP S551759A JP 7469378 A JP7469378 A JP 7469378A JP 7469378 A JP7469378 A JP 7469378A JP S551759 A JPS551759 A JP S551759A
Authority
JP
Japan
Prior art keywords
reset signal
vdd
potential
control system
power supply
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
JP7469378A
Other languages
Japanese (ja)
Inventor
Masafumi Yamaguchi
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 JP7469378A priority Critical patent/JPS551759A/en
Publication of JPS551759A publication Critical patent/JPS551759A/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 produce the reset signal correctly even if the power supply is ON or OFF in insufficient manner, by adding a circuit detecting the power supply voltage drop. CONSTITUTION:When the power supply circuit 7 outputs the voltage Vdd, the transistor 9 is turned on with the voltage developed across the resistor 8 via the Zener element 7a and resistor 7b, and the collector is at L potential. This signal is inputted to the NAND gate after inversion 11. Accordingly, the reset signal fed to the control system from the inverter 13 is at H and the control system normally operates. When Vdd falls down and the transistor 9 is turned off, the output signal from the collector is at H potential and it is fed to the NAND gate 12 after inversion 11. As a result, the reset signal of L potential is outputted from the inverter 13 until Vdd reaches a given value. Accordingly, the control system can be initialized completely even if Vdd is ON or OFF insufficiently.
JP7469378A 1978-06-19 1978-06-19 Reset signal generation circuit Pending JPS551759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7469378A JPS551759A (en) 1978-06-19 1978-06-19 Reset signal generation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7469378A JPS551759A (en) 1978-06-19 1978-06-19 Reset signal generation circuit

Publications (1)

Publication Number Publication Date
JPS551759A true JPS551759A (en) 1980-01-08

Family

ID=13554554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7469378A Pending JPS551759A (en) 1978-06-19 1978-06-19 Reset signal generation circuit

Country Status (1)

Country Link
JP (1) JPS551759A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822687A1 (en) * 1996-07-04 1998-02-04 Siemens Aktiengesellschaft On-board power supply network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822687A1 (en) * 1996-07-04 1998-02-04 Siemens Aktiengesellschaft On-board power supply network

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