JPS574617A - Pulse generating circuit - Google Patents

Pulse generating circuit

Info

Publication number
JPS574617A
JPS574617A JP7855880A JP7855880A JPS574617A JP S574617 A JPS574617 A JP S574617A JP 7855880 A JP7855880 A JP 7855880A JP 7855880 A JP7855880 A JP 7855880A JP S574617 A JPS574617 A JP S574617A
Authority
JP
Japan
Prior art keywords
voltage
trq2
emitter
base
output
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
JP7855880A
Other languages
Japanese (ja)
Inventor
Junzo Ono
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP7855880A priority Critical patent/JPS574617A/en
Publication of JPS574617A publication Critical patent/JPS574617A/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 obtain a reset pulse regardless of a gentle rise of voltage during application of power supply, by actuating a switching element with a difference between the signal that answers to the controlling reference voltage source of an output voltage control transistor of a voltage stabilizing circuit and the signal that answers to the output of the said stabilizing circuit. CONSTITUTION:When a power supply switch SW1 is turned on, capacitors C4 and C2 start charging by a power source E. Then the collector voltage and the base voltage of a transistor TRQ1 rise, and later the emitter voltage reaches the maximum level to be applied to the emitter of a TRQ2. At the same time, the voltage obtained at the point of connection between a Zener diode D4 and a diode D3 is applied to the base of the TRQ2. When the emitter voltage of the TRQ2 rises up to a level that is sufficiently higher than the base voltage, the TRQ2 switches to on from off. Thus, a differential pulse can be obtained at an output terminal A of a differentiating circuit.
JP7855880A 1980-06-10 1980-06-10 Pulse generating circuit Pending JPS574617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7855880A JPS574617A (en) 1980-06-10 1980-06-10 Pulse generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7855880A JPS574617A (en) 1980-06-10 1980-06-10 Pulse generating circuit

Publications (1)

Publication Number Publication Date
JPS574617A true JPS574617A (en) 1982-01-11

Family

ID=13665228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7855880A Pending JPS574617A (en) 1980-06-10 1980-06-10 Pulse generating circuit

Country Status (1)

Country Link
JP (1) JPS574617A (en)

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