GB1371583A - Maintenance of oscillation of mechanical resonators - Google Patents

Maintenance of oscillation of mechanical resonators

Info

Publication number
GB1371583A
GB1371583A GB4416772A GB4416772A GB1371583A GB 1371583 A GB1371583 A GB 1371583A GB 4416772 A GB4416772 A GB 4416772A GB 4416772 A GB4416772 A GB 4416772A GB 1371583 A GB1371583 A GB 1371583A
Authority
GB
United Kingdom
Prior art keywords
level
output
signals
gate
coil
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
GB4416772A
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.)
Golay S A Bernard
Original Assignee
Golay S A Bernard
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 Golay S A Bernard filed Critical Golay S A Bernard
Publication of GB1371583A publication Critical patent/GB1371583A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C11/00—Synchronisation of independently-driven clocks
    • G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
    • G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
    • G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)

Abstract

1371583 Electric timepieces BERNARD GOLAY SA 25 Sept 1972 [24 Sept 1971] 44167/72 Heading G3T A mechanical oscillator, includes a coil and a permanent magnet, whose oscillation frequency is changed by the change in energy level of a train of chopped square pulses controlled by the relative phase angle between the voltage generated by the oscillator above a pre-set level and a pilot frequency f, the oscillator frequency being further modified by means repelling it elastically when the amplitude of oscillation exceeds a pre-set angle. Three square wave signals, 17, 18, 19, are supplied having frequencies of 2 Hz, 1024 Hz and 512 Hz respectively. Signals 18 and 19 are connected to NOT-AND gate 20 the output of which has logic level 1 for ¥ of the cycle and logic level 0 for “ of the cycle, this signal being fed to one input of NOT-AND gate 21 and through inverter 24 to one input of NOT-AND gate 22 and the other inputs receiving respectively the 2 Hz signal direct and through the inverter 23. The output of 21 is a series of pulses with a mark/space ratio of 3 : 1 while the output of 22 has a mark/space ratio of 1 : 3. These signals appear alternatively at a rate of 2 Hz and are connected to one input of NOT-OR gate 26 the other input of which is supplied with a 2 Hz signal derived from the oscillator coil 3 via a level-detecting transistor 30 and inverted by inverter 28. Only when both of these signals are logic 0 level is the output of 26 logic 1 level and this output is used to control transistor 27 and hence the energy fed to coil 3. Any phase difference between the two 2 Hz signals will change the energy fed to coil 3 so as to reduce the phase difference.
GB4416772A 1971-09-24 1972-09-25 Maintenance of oscillation of mechanical resonators Expired GB1371583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1397571A CH612317GA3 (en) 1971-09-24 1971-09-24

Publications (1)

Publication Number Publication Date
GB1371583A true GB1371583A (en) 1974-10-23

Family

ID=4396883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4416772A Expired GB1371583A (en) 1971-09-24 1972-09-25 Maintenance of oscillation of mechanical resonators

Country Status (7)

Country Link
US (1) US3805179A (en)
JP (1) JPS4850758A (en)
CH (1) CH612317GA3 (en)
FR (1) FR2153482B1 (en)
GB (1) GB1371583A (en)
IT (1) IT1007527B (en)
SU (1) SU431693A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2309291A1 (en) * 1973-02-24 1974-08-29 Itt Ind Gmbh Deutsche PROCESS FOR SYNCHRONIZING MECHANICAL VIBRATORS OF USED WATCHES
CN116799485B (en) * 2023-06-09 2024-02-20 武汉理工大学 Ultralow frequency antenna system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543352A (en) * 1954-12-16
GB1205753A (en) * 1966-09-09 1970-09-16 Smiths Industries Ltd Horological instruments incorporating electrical oscillation generators

Also Published As

Publication number Publication date
FR2153482B1 (en) 1976-03-12
JPS4850758A (en) 1973-07-17
IT1007527B (en) 1976-10-30
US3805179A (en) 1974-04-16
DE2245644B2 (en) 1976-04-15
CH612317GA3 (en) 1979-07-31
FR2153482A1 (en) 1973-05-04
SU431693A3 (en) 1974-06-05
DE2245644A1 (en) 1973-03-29

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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