JPS56165407A - Control circuit for frequency temperature characteristic of oscillating circuit - Google Patents

Control circuit for frequency temperature characteristic of oscillating circuit

Info

Publication number
JPS56165407A
JPS56165407A JP6844980A JP6844980A JPS56165407A JP S56165407 A JPS56165407 A JP S56165407A JP 6844980 A JP6844980 A JP 6844980A JP 6844980 A JP6844980 A JP 6844980A JP S56165407 A JPS56165407 A JP S56165407A
Authority
JP
Japan
Prior art keywords
circuit
oscillating
frequency
control
frequency temperature
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
JP6844980A
Other languages
Japanese (ja)
Inventor
Hiroshi Nonaka
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP6844980A priority Critical patent/JPS56165407A/en
Publication of JPS56165407A publication Critical patent/JPS56165407A/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
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To realize an optimum control for the frequency temperature characteristics of an oscillating circuit, by connecting a parallel circuit of capacitors and a switching circuit in series to at least one of plural oscillators. CONSTITUTION:The on/off of a switching circuit 121 is controlled by a duty ratio control circuit 3, and the signal to control the duty ratio of the circuit 3 is delivered from a frequency dividing circuit 2. The oscillation frequency varies with variation of the capacities of capacitors C1 and C2. Thus the oscillation frequency is reduced by increasing the capacity and vice versa. For instance, a quartz oscillator X1 and the capacitor C1 are excluded from an oscillating circuit 12, and the oscillation frequencies are referred to as f1 and f2 when the circuit 121 is off and on respectively. Thus the oscillation frequency can be controlled in a range from f1 through f2, by controlling the time during which the circuit 121 is turned on.
JP6844980A 1980-05-23 1980-05-23 Control circuit for frequency temperature characteristic of oscillating circuit Pending JPS56165407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6844980A JPS56165407A (en) 1980-05-23 1980-05-23 Control circuit for frequency temperature characteristic of oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6844980A JPS56165407A (en) 1980-05-23 1980-05-23 Control circuit for frequency temperature characteristic of oscillating circuit

Publications (1)

Publication Number Publication Date
JPS56165407A true JPS56165407A (en) 1981-12-19

Family

ID=13374021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6844980A Pending JPS56165407A (en) 1980-05-23 1980-05-23 Control circuit for frequency temperature characteristic of oscillating circuit

Country Status (1)

Country Link
JP (1) JPS56165407A (en)

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