DE1491897B2 - Elektronischer Summer für eine Uhr, insbesondere Weckeruhr - Google Patents

Elektronischer Summer für eine Uhr, insbesondere Weckeruhr

Info

Publication number
DE1491897B2
DE1491897B2 DE1491897A DE1491897A DE1491897B2 DE 1491897 B2 DE1491897 B2 DE 1491897B2 DE 1491897 A DE1491897 A DE 1491897A DE 1491897 A DE1491897 A DE 1491897A DE 1491897 B2 DE1491897 B2 DE 1491897B2
Authority
DE
Germany
Prior art keywords
oscillator
winding
switch
transistor
frequency
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
DE1491897A
Other languages
German (de)
English (en)
Other versions
DE1491897A1 (de
Inventor
Jean-Marcel Le Landeron Stampfli (Schweiz)
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.)
Fabrique D'horlogerie De Fontainemelon Sa Succursale Du Landeron Le Landeron (schweiz)
Original Assignee
Fabrique D'horlogerie De Fontainemelon Sa Succursale Du Landeron Le Landeron (schweiz)
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 Fabrique D'horlogerie De Fontainemelon Sa Succursale Du Landeron Le Landeron (schweiz) filed Critical Fabrique D'horlogerie De Fontainemelon Sa Succursale Du Landeron Le Landeron (schweiz)
Publication of DE1491897A1 publication Critical patent/DE1491897A1/de
Publication of DE1491897B2 publication Critical patent/DE1491897B2/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/28—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to put into action electro-acoustic means, e.g. awakening by music
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
    • H03B5/362—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 the amplifier being a single transistor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
  • Amplifiers (AREA)
  • Electric Clocks (AREA)
DE1491897A 1964-08-18 1965-07-21 Elektronischer Summer für eine Uhr, insbesondere Weckeruhr Pending DE1491897B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1080564A CH419983A (fr) 1964-08-18 1964-08-18 Générateur électronique de signaux acoustiques pour l'horlogerie

Publications (2)

Publication Number Publication Date
DE1491897A1 DE1491897A1 (de) 1969-10-30
DE1491897B2 true DE1491897B2 (de) 1973-12-20

Family

ID=4367043

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1491897A Pending DE1491897B2 (de) 1964-08-18 1965-07-21 Elektronischer Summer für eine Uhr, insbesondere Weckeruhr

Country Status (3)

Country Link
US (1) US3341841A (enExample)
CH (2) CH1080564A4 (enExample)
DE (1) DE1491897B2 (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447151A (en) * 1967-03-23 1969-05-27 Bronson M Potter Alerting device having oscillations of negative resistance circuit controlled by mechanical resonance of transducer
US3589123A (en) * 1967-08-21 1971-06-29 Messers Gebruder Junghans Gmbh Signal device for electric alarm clocks
US3569963A (en) * 1969-10-06 1971-03-09 Mallory & Co Inc P R Audible alarm unit
GB1376433A (en) * 1970-11-07 1974-12-04 Absalom R R Electric sound-producing device
GB1324018A (en) * 1970-11-13 1973-07-18 Besson Partner Ltd A P Call tone devices
US3788060A (en) * 1971-12-09 1974-01-29 Y Kawamura Watch with an electronic buzzer
JPS5432348B2 (enExample) * 1972-02-25 1979-10-13
US3974499A (en) * 1973-12-12 1976-08-10 Star Seimitsu Kabushiki Kaisha Contactless buzzer
DE2941388A1 (de) * 1979-10-12 1981-04-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung fuer eine elektronische uhr mit weckeinrichtung
US4496914A (en) * 1981-11-13 1985-01-29 Texas Instruments Incorporated Piezo harn self-oscillating drive circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1214428A (fr) * 1958-12-07 1960-04-08 Hatot Leon Ets Perfectionnements aux appareils électromagnétiques applicables notamment aux avertisseurs horaires autonomes
US3209529A (en) * 1962-01-17 1965-10-05 Bulova Watch Co Inc Electronically controlled stop-watch
US3277465A (en) * 1963-02-25 1966-10-04 Bronson M Potter Electrically operated audible alarm

Also Published As

Publication number Publication date
DE1491897A1 (de) 1969-10-30
CH419983A (fr) 1966-05-14
US3341841A (en) 1967-09-12
CH1080564A4 (enExample) 1966-05-14

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