JPS5619220A - Clear signal generating circuit - Google Patents

Clear signal generating circuit

Info

Publication number
JPS5619220A
JPS5619220A JP9546279A JP9546279A JPS5619220A JP S5619220 A JPS5619220 A JP S5619220A JP 9546279 A JP9546279 A JP 9546279A JP 9546279 A JP9546279 A JP 9546279A JP S5619220 A JPS5619220 A JP S5619220A
Authority
JP
Japan
Prior art keywords
voltage
power supply
diode
vbe
clear
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
JP9546279A
Other languages
Japanese (ja)
Inventor
Mamoru Yoshizaki
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 JP9546279A priority Critical patent/JPS5619220A/en
Publication of JPS5619220A publication Critical patent/JPS5619220A/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

  • Logic Circuits (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To ensure the easy generation of the clear signals by connecting the diode and the Zener diode of the opposite polarity to the power supply voltage to the capacitor of the integral network which is connected between the power supply line and the ground. CONSTITUTION:With make of the power supply, the voltage of power supply line 1 is turned to voltage VCC at time T1 based on the power supply and the load. And charging voltage V1 of capacitor 3 starts rising up slowly than time T1 owing to existence of resistance 2. If the Zener voltage of Zener diode 5 is denoted as VD along with the base-emitter voltage of transistor 6 as VBE respectively, diode 5 does not conduct in the period of V1<VD+VBE with transistors 6 and 8 turned off and on respectively. Then the active low clear signals are delivered to clear logic circuit 9. After this, diode 5 conducts under V1>=VD+VBE, and the clear signal becomes high on the contrary to the above. And voltage V1 is turned fianlly into voltage VCC to become steady. In such way, the clear signals can be obtained easily and in a simple constitution of the circuit.
JP9546279A 1979-07-24 1979-07-24 Clear signal generating circuit Pending JPS5619220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9546279A JPS5619220A (en) 1979-07-24 1979-07-24 Clear signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9546279A JPS5619220A (en) 1979-07-24 1979-07-24 Clear signal generating circuit

Publications (1)

Publication Number Publication Date
JPS5619220A true JPS5619220A (en) 1981-02-23

Family

ID=14138326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9546279A Pending JPS5619220A (en) 1979-07-24 1979-07-24 Clear signal generating circuit

Country Status (1)

Country Link
JP (1) JPS5619220A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59119643U (en) * 1983-01-31 1984-08-13 日本電気ホームエレクトロニクス株式会社 Pulse generation circuit for initial setting
US4999205A (en) * 1989-08-17 1991-03-12 Kalamazoo Holdings, Inc. Curcumin complexed on water-dispersible substrates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59119643U (en) * 1983-01-31 1984-08-13 日本電気ホームエレクトロニクス株式会社 Pulse generation circuit for initial setting
US4999205A (en) * 1989-08-17 1991-03-12 Kalamazoo Holdings, Inc. Curcumin complexed on water-dispersible substrates

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