JPS5753141A - Oscillation detecting circuit - Google Patents

Oscillation detecting circuit

Info

Publication number
JPS5753141A
JPS5753141A JP12829180A JP12829180A JPS5753141A JP S5753141 A JPS5753141 A JP S5753141A JP 12829180 A JP12829180 A JP 12829180A JP 12829180 A JP12829180 A JP 12829180A JP S5753141 A JPS5753141 A JP S5753141A
Authority
JP
Japan
Prior art keywords
turned
level
fets
capacitor
power source
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
JP12829180A
Other languages
Japanese (ja)
Inventor
Kazuyuki Uchida
Masayuki Sasaki
Yasoji Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12829180A priority Critical patent/JPS5753141A/en
Publication of JPS5753141A publication Critical patent/JPS5753141A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/19—Monitoring patterns of pulse trains

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To prevent the malfunction of a system due to change of the state of a clock pulse generator, by connecting plural MOSFETs in series between a power source and the earth and by connecting capacitors to respective connection points and by controlling MOSFETs by clock pulses. CONSTITUTION:When a power source voltage rises, a clock pulse CP is generated with a delay. That is, the pulse CP is low-level, and MOSFETs 1 and 2 are turned on, and FETs 4 and 5 are turned off, and a capacitor is charged up to the power source voltage. Consequently, the detection output becomes high-level. When the plulse CP rises, FETs 1 and 2 are turned off, and FETs 4 and 5 are turned on, and a capacitor 9 is charged by a capacitor 8. Consequently, the detection output becomes low-level; and since capacitors 8 and 9 are charged intermittently synchronously with the pulse CP, the detection output is held in the low level.
JP12829180A 1980-09-16 1980-09-16 Oscillation detecting circuit Pending JPS5753141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12829180A JPS5753141A (en) 1980-09-16 1980-09-16 Oscillation detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12829180A JPS5753141A (en) 1980-09-16 1980-09-16 Oscillation detecting circuit

Publications (1)

Publication Number Publication Date
JPS5753141A true JPS5753141A (en) 1982-03-30

Family

ID=14981174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12829180A Pending JPS5753141A (en) 1980-09-16 1980-09-16 Oscillation detecting circuit

Country Status (1)

Country Link
JP (1) JPS5753141A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870630A (en) * 1981-10-22 1983-04-27 Matsushita Electric Ind Co Ltd Oscillation stop detecting circuit
JPH0270118A (en) * 1989-03-31 1990-03-09 Seiko Epson Corp Stop of oscillation detection circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870630A (en) * 1981-10-22 1983-04-27 Matsushita Electric Ind Co Ltd Oscillation stop detecting circuit
JPH0270118A (en) * 1989-03-31 1990-03-09 Seiko Epson Corp Stop of oscillation detection circuit

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