JPS561601A - Switching method for multiplied sine wave oscillator - Google Patents

Switching method for multiplied sine wave oscillator

Info

Publication number
JPS561601A
JPS561601A JP7687079A JP7687079A JPS561601A JP S561601 A JPS561601 A JP S561601A JP 7687079 A JP7687079 A JP 7687079A JP 7687079 A JP7687079 A JP 7687079A JP S561601 A JPS561601 A JP S561601A
Authority
JP
Japan
Prior art keywords
oscillator
sine wave
output
circuit
comparator
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.)
Granted
Application number
JP7687079A
Other languages
Japanese (ja)
Other versions
JPS5910091B2 (en
Inventor
Naganobu Honda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP54076870A priority Critical patent/JPS5910091B2/en
Publication of JPS561601A publication Critical patent/JPS561601A/en
Publication of JPS5910091B2 publication Critical patent/JPS5910091B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To obtain nearly the continuous sine waves by immediately switching the oscillator to the backup sine wave oscillator in case the fault of the sine wave oscillating circuit is detected by the logic sum of the output of the comparator and the one-shot circuit. CONSTITUTION:The full wave rectification is given to the output of sine wave oscillator 2, and then the output of oscillator 2 is compared 5 with the level set by level setter 4. Thus the value exceeding te set level is detected, and the inversed signal of the output of comparator 5 is applied to one-shot circuit 7. Both the outputs of circuit 7 and comparator 5 are supplied to logic sum circuit 8. And in case oscillator 2 has the normal oscillation, analog gate 10 is turned on to extract the output. Gate 10 is turned off when oscillator 2 discontinues the oscillation. Then analog gate 11 is turned on via NOT circuit 9, and oscillator 2 is switched to sine wave oscillator 1. In other words, the fault of the sine wave oscillator is detected immediately to perform the switching from the using side oscillator to the backup oscillator. In such way, nearly the continuous sine waves can be obtained.
JP54076870A 1979-06-20 1979-06-20 How to switch multiplexed sine wave oscillator Expired JPS5910091B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54076870A JPS5910091B2 (en) 1979-06-20 1979-06-20 How to switch multiplexed sine wave oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54076870A JPS5910091B2 (en) 1979-06-20 1979-06-20 How to switch multiplexed sine wave oscillator

Publications (2)

Publication Number Publication Date
JPS561601A true JPS561601A (en) 1981-01-09
JPS5910091B2 JPS5910091B2 (en) 1984-03-07

Family

ID=13617667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54076870A Expired JPS5910091B2 (en) 1979-06-20 1979-06-20 How to switch multiplexed sine wave oscillator

Country Status (1)

Country Link
JP (1) JPS5910091B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61230074A (en) * 1985-04-04 1986-10-14 Matsushita Electric Ind Co Ltd Time setting device
JPS61246696A (en) * 1985-04-24 1986-11-01 Matsushita Electric Ind Co Ltd Time setting apparatus

Also Published As

Publication number Publication date
JPS5910091B2 (en) 1984-03-07

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