JPS6423627A - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
JPS6423627A
JPS6423627A JP62179495A JP17949587A JPS6423627A JP S6423627 A JPS6423627 A JP S6423627A JP 62179495 A JP62179495 A JP 62179495A JP 17949587 A JP17949587 A JP 17949587A JP S6423627 A JPS6423627 A JP S6423627A
Authority
JP
Japan
Prior art keywords
divider
signal
power supply
phase
synchronizing type
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
JP62179495A
Other languages
Japanese (ja)
Inventor
Yukio Murayama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62179495A priority Critical patent/JPS6423627A/en
Publication of JPS6423627A publication Critical patent/JPS6423627A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To make phase differences between signals to a phase comparator immediately after making power supply coincident with each other, by providing a phase matching circuit which causes the phase of the signal from a variable divider to match with that of a reference signal from a synchronizing type divider by resetting or presetting the synchronizing type divider in accordance with a signal from the variable divider immediately after the power supply is made. CONSTITUTION:After a switch S1 is turned on and power supply is made, e phase matching circuit 14 receives a dividing signal from a variable divider D and a synchronizing type divider 2 is reset or preset with the dividing signal. A reference signal from the synchronizing type divider 2 and the dividing signal from the variable divider D are inputted to a phase comparator 3 in a state where the phases are matched with each other. Then a switch S0 is closed at desired timing. Therefore, the frequency of a voltage-controlled oscillator 5 does not change immediately after the power supply is turned on.
JP62179495A 1987-07-17 1987-07-17 Frequency synthesizer Pending JPS6423627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62179495A JPS6423627A (en) 1987-07-17 1987-07-17 Frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62179495A JPS6423627A (en) 1987-07-17 1987-07-17 Frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS6423627A true JPS6423627A (en) 1989-01-26

Family

ID=16066820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62179495A Pending JPS6423627A (en) 1987-07-17 1987-07-17 Frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS6423627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848563A (en) * 1992-07-21 1998-12-15 Amada Metrecs Company Limited Multiple tool for punch press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848563A (en) * 1992-07-21 1998-12-15 Amada Metrecs Company Limited Multiple tool for punch press

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