HK43581A - Signal generator - Google Patents

Signal generator

Info

Publication number
HK43581A
HK43581A HK435/81A HK43581A HK43581A HK 43581 A HK43581 A HK 43581A HK 435/81 A HK435/81 A HK 435/81A HK 43581 A HK43581 A HK 43581A HK 43581 A HK43581 A HK 43581A
Authority
HK
Hong Kong
Prior art keywords
delta
width
length
signal generator
base signal
Prior art date
Application number
HK435/81A
Original Assignee
Seikosha Kk
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 Seikosha Kk filed Critical Seikosha Kk
Publication of HK43581A publication Critical patent/HK43581A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • 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
    • H03L1/026—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 by using a memory for digitally storing correction values
    • 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
    • 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
    • H03L1/027—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 by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit
    • 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
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Details Of Television Scanning (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

In order to manufacture a time-base signal generator, a quartz crystal having dimensions included within predetermined tolerances is formed, this quartz crystal is connected to an oscillating circuit and to a frequency divider, these circuits being constructed such that the division ratio is adjustable. According to the invention, the crystal is of the GT-cut type and the polishing is carried out in such a way that the ratio between the width (w) and the length (l) has precisely the value which corresponds to a zero frequency/temperature coefficient. The width and the length may have values which depart from the nominal values provided that they remain within the tolerances ( DELTA w) and ( DELTA l). Under these conditions, the generator of the time-base signal entirely forgoes any temperature-compensation element. <IMAGE>
HK435/81A 1975-08-26 1981-08-27 Signal generator HK43581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50103277A JPS5227247A (en) 1975-08-26 1975-08-26 Signal generator with gt-cut quatz vibrator

Publications (1)

Publication Number Publication Date
HK43581A true HK43581A (en) 1981-09-04

Family

ID=14349857

Family Applications (1)

Application Number Title Priority Date Filing Date
HK435/81A HK43581A (en) 1975-08-26 1981-08-27 Signal generator

Country Status (6)

Country Link
JP (1) JPS5227247A (en)
CH (1) CH631046GA3 (en)
DE (1) DE2638311C2 (en)
FR (1) FR2322478A1 (en)
GB (1) GB1522077A (en)
HK (1) HK43581A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3111736A1 (en) * 1981-03-25 1982-11-25 Siemens AG, 1000 Berlin und 8000 München CLOCK GENERATOR ARRANGEMENT
US5006296A (en) * 1988-09-01 1991-04-09 The Dow Chemical Company Process for the preparation of fibers of stereoregular polystyrene

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1762746A1 (en) * 1967-08-21 1970-08-20 Synchron Druzstov Pro Vyvoj A Method for syntonizing precise oscillators and the arrangement for performing this method
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
CH554015A (en) * 1971-10-15 1974-09-13
JPS5181543A (en) * 1975-01-14 1976-07-16 Suwa Seikosha Kk SHUHASUJIDOONDOHOSHOSOCHI

Also Published As

Publication number Publication date
GB1522077A (en) 1978-08-23
FR2322478B1 (en) 1982-02-12
CH631046GA3 (en) 1982-07-30
CH631046B (en)
FR2322478A1 (en) 1977-03-25
DE2638311A1 (en) 1977-03-10
JPS5227247A (en) 1977-03-01
DE2638311C2 (en) 1987-04-23

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