JPS5776458A - Electronic device - Google Patents

Electronic device

Info

Publication number
JPS5776458A
JPS5776458A JP15314680A JP15314680A JPS5776458A JP S5776458 A JPS5776458 A JP S5776458A JP 15314680 A JP15314680 A JP 15314680A JP 15314680 A JP15314680 A JP 15314680A JP S5776458 A JPS5776458 A JP S5776458A
Authority
JP
Japan
Prior art keywords
inverter
oscillation
output
amplitude
level
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
JP15314680A
Other languages
Japanese (ja)
Inventor
Kimiaki Nakazawa
Tadashi Sano
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP15314680A priority Critical patent/JPS5776458A/en
Publication of JPS5776458A publication Critical patent/JPS5776458A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16585—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 for individual pulses, ripple or noise and other applications where timing or duration is of importance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To foresee the oscillation stop of an oscillation circuit accurately by detecting that the amplitude of an oscillation output signal lowers to below a certain value. CONSTITUTION:An inverter 9 is an amplifier directly coupled to an oscillator circuit and an inverter 10 is an amplifier differing in logic level from the inverter 9. When the oscillation amplitude is large, the output of the inverter 9 is transmitted to a frequency dividing circuit via an inverter 11, and the pulses of the same frequency as that of the oscillation signal is outputted to the output of an inverter 12. On the other hand, if the oscillation amplitude is slight, the oscillation signal is amplified by the inverter 9 and the inverter 11 is driven but the output, of the inverter 10 does not cross the logic level of the inverter 12 and therefore the output of the inverter 12 is always the H level. Hence, the oscillation stop is foreseen by monitoring the ouput level of the inverter 12.
JP15314680A 1980-10-31 1980-10-31 Electronic device Pending JPS5776458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15314680A JPS5776458A (en) 1980-10-31 1980-10-31 Electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15314680A JPS5776458A (en) 1980-10-31 1980-10-31 Electronic device

Publications (1)

Publication Number Publication Date
JPS5776458A true JPS5776458A (en) 1982-05-13

Family

ID=15556015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15314680A Pending JPS5776458A (en) 1980-10-31 1980-10-31 Electronic device

Country Status (1)

Country Link
JP (1) JPS5776458A (en)

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