GB1209706A - Improvements in or relating to the generation of oscillations - Google Patents

Improvements in or relating to the generation of oscillations

Info

Publication number
GB1209706A
GB1209706A GB26118/68A GB2611868A GB1209706A GB 1209706 A GB1209706 A GB 1209706A GB 26118/68 A GB26118/68 A GB 26118/68A GB 2611868 A GB2611868 A GB 2611868A GB 1209706 A GB1209706 A GB 1209706A
Authority
GB
United Kingdom
Prior art keywords
oscillator
transistor
peak value
oscillation
current
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.)
Expired
Application number
GB26118/68A
Inventor
Terence Roy Chappell
Michael John Rogers
Thomas Ralph Heeks
John Henry Shelley
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB26118/68A priority Critical patent/GB1209706A/en
Priority to US827662A priority patent/US3609579A/en
Priority to ES367888A priority patent/ES367888A1/en
Priority to CH826969D priority patent/CH826969A4/xx
Priority to CH826969A priority patent/CH524183A/en
Priority to DE19691927673 priority patent/DE1927673A1/en
Priority to FR6917902A priority patent/FR2009783A1/fr
Publication of GB1209706A publication Critical patent/GB1209706A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • 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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/14—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a semiconductor device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1,209,706. Oscillator circuits. SMITHS INDUSTRIES Ltd. 2 June, 1969 [31 May, 1968], No. 26118/68. Heading H3T. A method of controlling the frequency of a sinewave oscillator 6 by means of a higher frequency oscillator 3 comprises: sensing the attainment of a peak value of a parameter of the oscillation of oscillator 6; clamping the, parameter at this peak value to temporarily inhibit oscillation; and releasing the clamp when the oscillator 3 next reaches a datum in its oscillation cycle. As described, the peak value of the current through inductor 8 is sensed by detecting the corresponding passage through zero of the voltage across capacitor 7. When this zero crossing occurs, trigger circuit 10, 11 switches to produce an output pulse which turns on transistor 18 via transistor 12. Transistor 18 then feeds to inductor 8 a current which is equal to the peak value of the oscillatory current. The high-frequency oscillator 3 provides a train of pulses, and the arrival of the next pulse in this train turn on transistor 19 to switch off transistor 18 and allow the oscillator 6 to recommence oscillation.
GB26118/68A 1968-05-31 1968-05-31 Improvements in or relating to the generation of oscillations Expired GB1209706A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB26118/68A GB1209706A (en) 1968-05-31 1968-05-31 Improvements in or relating to the generation of oscillations
US827662A US3609579A (en) 1968-05-31 1969-05-26 Method and apparatus for controlling one oscillator by another
ES367888A ES367888A1 (en) 1968-05-31 1969-05-30 Method and apparatus for controlling one oscillator by another
CH826969D CH826969A4 (en) 1968-05-31 1969-05-30
CH826969A CH524183A (en) 1968-05-31 1969-05-30 Frequency division method for time measurement
DE19691927673 DE1927673A1 (en) 1968-05-31 1969-05-30 Method and circuit arrangement for oscillator vibration generator
FR6917902A FR2009783A1 (en) 1968-05-31 1969-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26118/68A GB1209706A (en) 1968-05-31 1968-05-31 Improvements in or relating to the generation of oscillations

Publications (1)

Publication Number Publication Date
GB1209706A true GB1209706A (en) 1970-10-21

Family

ID=10238662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26118/68A Expired GB1209706A (en) 1968-05-31 1968-05-31 Improvements in or relating to the generation of oscillations

Country Status (6)

Country Link
US (1) US3609579A (en)
CH (2) CH524183A (en)
DE (1) DE1927673A1 (en)
ES (1) ES367888A1 (en)
FR (1) FR2009783A1 (en)
GB (1) GB1209706A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867585A (en) * 1973-08-02 1975-02-18 Gte Automatic Electric Lab Inc Electronic tone ringer
US3965307A (en) * 1974-05-28 1976-06-22 Gte Automatic Electric Laboratories Incorporated Electronic tone ringer
JPS5312255A (en) * 1976-07-21 1978-02-03 Seiko Epson Corp Electronic clock
US4719452A (en) * 1984-06-20 1988-01-12 Bluegrass Electronic Audio signal generator
US4759078A (en) * 1986-11-14 1988-07-19 Rose Communication Systems, Inc. Coordinated local oscillator receiving system
WO1991012672A1 (en) * 1990-02-09 1991-08-22 Rose Communications, Inc. Method and apparatus for selective sideband in a proximal cable-less communication system signal
US5101505A (en) * 1990-02-09 1992-03-31 Rose Communications, Inc. Method and apparatus for selective sideband signal correction in a proximal cable-less communication system
US5109545A (en) * 1990-02-09 1992-04-28 Rose Communications, Inc. Proximal cable-less communication system with intentional signal path
US5561399A (en) * 1995-04-19 1996-10-01 Telefonaktiebolaget Lm Ericsson Cascaded multi-resonator oscillator having high Q-value
EP2458458B1 (en) * 2010-11-26 2017-11-15 The Swatch Group Research and Development Ltd. Method for measuring the precision of a mechanical watch

Also Published As

Publication number Publication date
US3609579A (en) 1971-09-28
CH524183A (en) 1972-02-15
ES367888A1 (en) 1971-06-16
CH826969A4 (en) 1972-02-15
FR2009783A1 (en) 1970-02-06
DE1927673A1 (en) 1969-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees