JPS5639633A - Loop filter circuit in phase-locked loop circuit - Google Patents

Loop filter circuit in phase-locked loop circuit

Info

Publication number
JPS5639633A
JPS5639633A JP11466279A JP11466279A JPS5639633A JP S5639633 A JPS5639633 A JP S5639633A JP 11466279 A JP11466279 A JP 11466279A JP 11466279 A JP11466279 A JP 11466279A JP S5639633 A JPS5639633 A JP S5639633A
Authority
JP
Japan
Prior art keywords
state
circuit
trs
output
phase
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
JP11466279A
Other languages
Japanese (ja)
Inventor
Minoru Ogita
Shigenobu Kimura
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP11466279A priority Critical patent/JPS5639633A/en
Publication of JPS5639633A publication Critical patent/JPS5639633A/en
Pending 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
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop

Landscapes

  • Networks Using Active Elements (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To keep an output voltage constant by turning off both amplifying transistors, charging and discharging a voltage holding capacitor, when the output of a phase comparator is placed in an ''open'' state. CONSTITUTION:Amplifying transistor TRs 31 and 32 are provided for charging and discharging capacitor 36. When a signal is in state ''H'' at input terminal 20 to which the output of the phase comparator is applied, either of TRs 31 and 32 is turned on and the other off. When the signal at terminal 20 is in state ''L'', on the other hand TRs 31 and 32 are turned off and on reversely. Further, when the ''open'' state is set at terminal 20, TRs 31 and 32 are both turned off. Thus, the output voltage can be kept constant when the phase comparator output is in the ''open'' state.
JP11466279A 1979-09-06 1979-09-06 Loop filter circuit in phase-locked loop circuit Pending JPS5639633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11466279A JPS5639633A (en) 1979-09-06 1979-09-06 Loop filter circuit in phase-locked loop circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11466279A JPS5639633A (en) 1979-09-06 1979-09-06 Loop filter circuit in phase-locked loop circuit

Publications (1)

Publication Number Publication Date
JPS5639633A true JPS5639633A (en) 1981-04-15

Family

ID=14643423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11466279A Pending JPS5639633A (en) 1979-09-06 1979-09-06 Loop filter circuit in phase-locked loop circuit

Country Status (1)

Country Link
JP (1) JPS5639633A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195288A (en) * 1986-02-20 1987-08-28 Agency Of Ind Science & Technol Production enhancement of microbial flocculant
JPS62250918A (en) * 1986-04-24 1987-10-31 Agency Of Ind Science & Technol Treatment method for stock raising waste water by microbe producing coagulant
JPH01211492A (en) * 1988-02-18 1989-08-24 Agency Of Ind Science & Technol Enhanced production of microorganism flocculant noc-1
JPH0292273A (en) * 1988-09-29 1990-04-03 Agency Of Ind Science & Technol Production enhancing medium of bacterium flocculating agent and production enhancement
EP0709966A3 (en) * 1994-10-26 1997-06-18 Cypress Semiconductor Corp Phase detector with ternary output

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527547B2 (en) * 1972-04-06 1977-03-03
JPS52124847A (en) * 1976-04-12 1977-10-20 Fujitsu Ltd Charge pump circuit of digital phase synchronous oscillator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527547B2 (en) * 1972-04-06 1977-03-03
JPS52124847A (en) * 1976-04-12 1977-10-20 Fujitsu Ltd Charge pump circuit of digital phase synchronous oscillator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62195288A (en) * 1986-02-20 1987-08-28 Agency Of Ind Science & Technol Production enhancement of microbial flocculant
JPH0661268B2 (en) * 1986-02-20 1994-08-17 工業技術院長 Microbial flocculant production enhancement method
JPS62250918A (en) * 1986-04-24 1987-10-31 Agency Of Ind Science & Technol Treatment method for stock raising waste water by microbe producing coagulant
JPH01211492A (en) * 1988-02-18 1989-08-24 Agency Of Ind Science & Technol Enhanced production of microorganism flocculant noc-1
JPH0292273A (en) * 1988-09-29 1990-04-03 Agency Of Ind Science & Technol Production enhancing medium of bacterium flocculating agent and production enhancement
JPH0426836B2 (en) * 1988-09-29 1992-05-08 Kogyo Gijutsu Incho
EP0709966A3 (en) * 1994-10-26 1997-06-18 Cypress Semiconductor Corp Phase detector with ternary output

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