GB1339439A - Electrodynamic oscillator - Google Patents

Electrodynamic oscillator

Info

Publication number
GB1339439A
GB1339439A GB5796470A GB5796470A GB1339439A GB 1339439 A GB1339439 A GB 1339439A GB 5796470 A GB5796470 A GB 5796470A GB 5796470 A GB5796470 A GB 5796470A GB 1339439 A GB1339439 A GB 1339439A
Authority
GB
United Kingdom
Prior art keywords
discs
magnets
coil
support member
coil unit
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
GB5796470A
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.)
Kroewerath S L
Original Assignee
Kroewerath S L
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 Kroewerath S L filed Critical Kroewerath S L
Publication of GB1339439A publication Critical patent/GB1339439A/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
    • G04C3/066—Constructional details, e.g. disposition of coils
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • 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
    • G04C3/042—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 mechanical coupling
    • G04C3/045—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 mechanical coupling with constant impulses
    • 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
    • G04C3/069—Driving circuits using a single coil for detection and driving purposes
    • 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
    • H03B15/00—Generation of oscillations using galvano-magnetic devices, e.g. Hall-effect devices, or using superconductivity effects
    • 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
    • H03B5/02—Details
    • H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
    • 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
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1221—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising multiple amplification stages connected in cascade
    • 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
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

1339439 Electronically maintained balance members in clocks S L KROEWERATH 7 Dec 1970 [9 Dec 1969] 57964/70 Heading G3T An electro-mechanical oscillator e.g. for a clock, comprises an oscillatory mass (balance member) formed by discs carrying permanent magnets the distance between the magnetic axes of the two magnets, along their arcuate path of movement with respect to a coil unit, being substantially equal to the diameter of the coil unit and the diameter of each magnet being less than the winding height of the coil unit. Oscillation of the oscillator is maintained by a transistor circuit powered by a battery. In an embodiment Figs.2a, 2b two discs 27, 28 of soft magnetic material each carry a respective pair of permanent magnets 29a, 29b and 30a, 30b also counterweights 33, 34 to eliminate unbalance. The discs are fixed to a spindle 25 and the magnets co-operate with a coil unit 35 on a stationary support 37, 38, 43. The spindle carries a pawl wheel 52 which transmits the arcuate oscillation of the discs to a gear wheel 53 of a gear train (not shown) coupled to time indicating hands. A spiral restoring spring 54 is provided. In a further embodiment Fig.2d (not shown) the magnets (75) (76) are carried on a support member (73) instead of on the discs. The support member is fixed to the spindle midway between the two discs also there are two coil windings (77) (78) one disposed between the upper disc and magnet support member and the other between the lower disc and the support member. In a drive circuit for the electro-mechanical oscillator, the base of a control transistor 120 is connected to a voltage divider R114, C115, R116 and when it receives a negative pulse therefrom the collector of a drive transistor 108 is caused to go more negative resulting in an increase in current through coil winding 104. Positive pulses on the base of 120 cause a reduction in coil current. Changes in Tr108 collector voltage due to induced voltage in the coil winding during movement of the magnets, are delayed by the time constant of the voltage divider R114 C115 R116. The waveforms of the induced voltage pulses and drive pulses become narrower or shorter with increasing amplitude of oscillation, (angular displacement of mass) thus automatically providing a natural amplitude limitation. To provide temperature compensation R124 may be an NTC resistor. Alternatively the oscillatory member may be a pendulum (not illustrated).
GB5796470A 1969-12-09 1970-12-07 Electrodynamic oscillator Expired GB1339439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691961629 DE1961629B2 (en) 1969-12-09 1969-12-09 ROTARY ARM WITH ELECTRODYNAMIC DRIVE AND ELECTRODYNA MIXER SCANNER

Publications (1)

Publication Number Publication Date
GB1339439A true GB1339439A (en) 1973-12-05

Family

ID=5753351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5796470A Expired GB1339439A (en) 1969-12-09 1970-12-07 Electrodynamic oscillator

Country Status (6)

Country Link
US (1) US3713047A (en)
CH (1) CH579792B5 (en)
DE (1) DE1961629B2 (en)
ES (1) ES386175A1 (en)
FR (1) FR2070781B1 (en)
GB (1) GB1339439A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES249816A1 (en) * 1958-06-14 1960-07-16 Durowe A G IMPROVEMENTS MADE IN THE TIMING MECHANICAL OSCILLATING ORGANS
DE1300867B (en) * 1963-12-02 1969-08-07 Reich Robert W Electronic clock drive
US3487629A (en) * 1965-02-22 1970-01-06 Citizen Watch Co Ltd Drive balance wheel arrangement for timepiece
CH64266A4 (en) * 1966-01-18 1968-12-31
FR1473362A (en) * 1966-02-22 1967-03-17 Citizen Watch Co Ltd Device for driving the balance of watches and watches and similar apparatus equipped with such a device
US3509437A (en) * 1966-09-08 1970-04-28 Citizen Watch Co Ltd Timepiece drive

Also Published As

Publication number Publication date
FR2070781B1 (en) 1975-01-10
CH1773170A4 (en) 1973-10-15
DE1961629A1 (en) 1971-08-19
ES386175A1 (en) 1973-03-16
DE1961629B2 (en) 1972-02-17
US3713047A (en) 1973-01-23
FR2070781A1 (en) 1971-09-17
CH579792B5 (en) 1976-09-15

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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