JPS5718125A - Reset signal generating circuit - Google Patents

Reset signal generating circuit

Info

Publication number
JPS5718125A
JPS5718125A JP9429680A JP9429680A JPS5718125A JP S5718125 A JPS5718125 A JP S5718125A JP 9429680 A JP9429680 A JP 9429680A JP 9429680 A JP9429680 A JP 9429680A JP S5718125 A JPS5718125 A JP S5718125A
Authority
JP
Japan
Prior art keywords
constitution
collector
inverter gate
reset signal
current
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
JP9429680A
Other languages
Japanese (ja)
Inventor
Mikio Hikino
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 JP9429680A priority Critical patent/JPS5718125A/en
Publication of JPS5718125A publication Critical patent/JPS5718125A/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 generate a reset signal which is long enough without increasing a chip size and consumption current, by means of constitution of only providing an inverter gate for reducing a charge current of capacity by shunt. CONSTITUTION:The second collector of an inverter gate G1 is connected to an input of an inverter gate G3, and the first collector is connected to an output terminal OUT. When an electric power supply has been put to work, a charge current Ic flows, and voltage V1 of a capacity C rises. Up to a threshold level Vth, the first collector voltage V0 of G1 is ''H'', G3 makes Ic' flow, and Ic is Ij-Ic'. When it reaches Vth at time t1 and G1 is turned on, G3 is turned off, and Ic' becomes ''0''. In case when hFE of G3 is large enough, Ic' becomes Ij/N, a reset time t0-t1 is CXVth/(1- N<-1>) Ij, and N suitably selects a pattern area ratio of 2 outputs of G3 and is able to decide it to an optional value. According to such a constitution, a long reset time is obtained without increasing a chip size and current consumption.
JP9429680A 1980-07-09 1980-07-09 Reset signal generating circuit Pending JPS5718125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9429680A JPS5718125A (en) 1980-07-09 1980-07-09 Reset signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9429680A JPS5718125A (en) 1980-07-09 1980-07-09 Reset signal generating circuit

Publications (1)

Publication Number Publication Date
JPS5718125A true JPS5718125A (en) 1982-01-29

Family

ID=14106299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9429680A Pending JPS5718125A (en) 1980-07-09 1980-07-09 Reset signal generating circuit

Country Status (1)

Country Link
JP (1) JPS5718125A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215919A (en) * 1985-07-12 1987-01-24 Matsushita Electric Ind Co Ltd Automatic reset circuit
JPS6321537A (en) * 1986-07-16 1988-01-29 Sato Kogyo Co Ltd Pull-out test for hardening body
JPH05335914A (en) * 1992-12-15 1993-12-17 Omron Corp Power supply resetting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215919A (en) * 1985-07-12 1987-01-24 Matsushita Electric Ind Co Ltd Automatic reset circuit
JPS6321537A (en) * 1986-07-16 1988-01-29 Sato Kogyo Co Ltd Pull-out test for hardening body
JPH05335914A (en) * 1992-12-15 1993-12-17 Omron Corp Power supply resetting circuit

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