FR2220923A1 - Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source - Google Patents

Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source

Info

Publication number
FR2220923A1
FR2220923A1 FR7415738A FR7415738A FR2220923A1 FR 2220923 A1 FR2220923 A1 FR 2220923A1 FR 7415738 A FR7415738 A FR 7415738A FR 7415738 A FR7415738 A FR 7415738A FR 2220923 A1 FR2220923 A1 FR 2220923A1
Authority
FR
France
Prior art keywords
periodic signal
time measurement
signal generator
freq
watches
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.)
Granted
Application number
FR7415738A
Other languages
English (en)
French (fr)
Other versions
FR2220923B1 (enrdf_load_html_response
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.)
Bicosa Societe de Recherches SA
Original Assignee
Bicosa Societe de Recherches SA
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 Bicosa Societe de Recherches SA filed Critical Bicosa Societe de Recherches SA
Priority to FR7415738A priority Critical patent/FR2220923A1/fr
Publication of FR2220923A1 publication Critical patent/FR2220923A1/fr
Priority to US05/513,927 priority patent/US4009565A/en
Application granted granted Critical
Publication of FR2220923B1 publication Critical patent/FR2220923B1/fr
Granted legal-status Critical Current

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
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
FR7415738A 1974-05-07 1974-05-07 Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source Granted FR2220923A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7415738A FR2220923A1 (en) 1974-05-07 1974-05-07 Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source
US05/513,927 US4009565A (en) 1974-05-07 1974-10-10 Time measuring device having a periodic signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7415738A FR2220923A1 (en) 1974-05-07 1974-05-07 Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source

Publications (2)

Publication Number Publication Date
FR2220923A1 true FR2220923A1 (en) 1974-10-04
FR2220923B1 FR2220923B1 (enrdf_load_html_response) 1976-10-15

Family

ID=9138544

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7415738A Granted FR2220923A1 (en) 1974-05-07 1974-05-07 Time measurement clocks or watches - uses determined freq. periodic signal generator and D.C. supply source

Country Status (1)

Country Link
FR (1) FR2220923A1 (enrdf_load_html_response)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1481356A (fr) * 1966-05-25 1967-05-19 Chronomètre électronique
US3378693A (en) * 1964-07-25 1968-04-16 Schmidt Metallwarenfabrik Fa G Impulse sender for the drive of timing devices, preferably automatic permanent calendars
US3466506A (en) * 1967-05-03 1969-09-09 Gen Time Corp Pulse generator for periodically energizing a timer solenoid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378693A (en) * 1964-07-25 1968-04-16 Schmidt Metallwarenfabrik Fa G Impulse sender for the drive of timing devices, preferably automatic permanent calendars
FR1481356A (fr) * 1966-05-25 1967-05-19 Chronomètre électronique
US3466506A (en) * 1967-05-03 1969-09-09 Gen Time Corp Pulse generator for periodically energizing a timer solenoid

Also Published As

Publication number Publication date
FR2220923B1 (enrdf_load_html_response) 1976-10-15

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Legal Events

Date Code Title Description
ST Notification of lapse