JPS5765021A - Dynamic frequency division circuit - Google Patents

Dynamic frequency division circuit

Info

Publication number
JPS5765021A
JPS5765021A JP55141466A JP14146680A JPS5765021A JP S5765021 A JPS5765021 A JP S5765021A JP 55141466 A JP55141466 A JP 55141466A JP 14146680 A JP14146680 A JP 14146680A JP S5765021 A JPS5765021 A JP S5765021A
Authority
JP
Japan
Prior art keywords
power supply
circuit
frequency division
dynamic frequency
output
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
JP55141466A
Other languages
Japanese (ja)
Inventor
Fukuo Sekiya
Shigeru Morokawa
Yoshiki Iwakura
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.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch 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 Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP55141466A priority Critical patent/JPS5765021A/en
Publication of JPS5765021A publication Critical patent/JPS5765021A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/02—Conversion or regulation of current or voltage
    • G04G19/06—Regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To perform normal frequency division all times, by providing a constant power supply connected between the power supply terminal and the battery and adjusting the output current of the constant current source, in a dynamic frequency dividing circuit used for a portable electronic device such as an electronic watch. CONSTITUTION:A bias circuit 22 consists of resistors 30, 32 connected in series between the power supply line at high potential side of a dynamic frequency dividing circuit 4 and the power supply line at low potential side, the output of a quartz and a capacitor 34 inserted between the input terminal of the circuit 4 and the connecting point of the resistors 30, 32. The DC level of an input signal to the circuit 4 is set to 1/2 of the power supply voltage of the circuit 4. Thus, even if the output signal level of an oscillator 2 is varied and the output signal amplitude is small, normal frequency division can be made.
JP55141466A 1980-10-09 1980-10-09 Dynamic frequency division circuit Pending JPS5765021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55141466A JPS5765021A (en) 1980-10-09 1980-10-09 Dynamic frequency division circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141466A JPS5765021A (en) 1980-10-09 1980-10-09 Dynamic frequency division circuit

Publications (1)

Publication Number Publication Date
JPS5765021A true JPS5765021A (en) 1982-04-20

Family

ID=15292533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141466A Pending JPS5765021A (en) 1980-10-09 1980-10-09 Dynamic frequency division circuit

Country Status (1)

Country Link
JP (1) JPS5765021A (en)

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