GB1272997A - Horological electronic circuit - Google Patents

Horological electronic circuit

Info

Publication number
GB1272997A
GB1272997A GB2576769A GB2576769A GB1272997A GB 1272997 A GB1272997 A GB 1272997A GB 2576769 A GB2576769 A GB 2576769A GB 2576769 A GB2576769 A GB 2576769A GB 1272997 A GB1272997 A GB 1272997A
Authority
GB
United Kingdom
Prior art keywords
horological
electronic circuit
crystal
channel
divisions
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
GB2576769A
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.)
United States Time Corp
Original Assignee
United States Time Corp
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 United States Time Corp filed Critical United States Time Corp
Publication of GB1272997A publication Critical patent/GB1272997A/en
Expired 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
    • H03B5/30—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
    • H03B5/364—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 comprising field effect transistors
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)

Abstract

1,272,997. Crystal oscillators. UNITED STATES TIME CORP. 20 May, 1969 [13 June, 1968], No. 25767/69. Heading H3T. [Also in Divisions G3 and G4] A crystal oscillator for use as a time base in an electronic timepiece (see Division G3) includes a crystal 11, and P-channel and N-channel metal oxide insulated gate field effect transistors Q1, Q<SP>2</SP>, Q3, and Q4 arranged as shown.
GB2576769A 1968-06-13 1969-05-20 Horological electronic circuit Expired GB1272997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73661868A 1968-06-13 1968-06-13

Publications (1)

Publication Number Publication Date
GB1272997A true GB1272997A (en) 1972-05-03

Family

ID=24960578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2576769A Expired GB1272997A (en) 1968-06-13 1969-05-20 Horological electronic circuit

Country Status (3)

Country Link
DE (1) DE1928878A1 (en)
FR (1) FR2010828B1 (en)
GB (1) GB1272997A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1339402A (en) * 1971-02-18 1973-12-05 Suwa Seikosha Kk Timepiece
US3725822A (en) * 1971-05-20 1973-04-03 Rca Corp Phase shift oscillators using insulated-gate field-effect transistors
JPS5135875B1 (en) * 1973-05-15 1976-10-05
DE4210258A1 (en) * 1992-03-28 1993-09-30 Man Nutzfahrzeuge Ag Transmission for vehicle with two engines - has separate clutches to couple to summation gearing and further clutch to couple to main gearbox

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH289118A (en) * 1951-04-05 1953-02-28 Ancienne Manufacture D Horloge Clock.
FR1517155A (en) * 1966-03-04 1968-03-15 Shell Int Research Biologically active 1,3-butadiene derivatives, compositions containing them, their preparation and use

Also Published As

Publication number Publication date
DE1928878A1 (en) 1970-06-25
FR2010828B1 (en) 1974-02-22
FR2010828A1 (en) 1970-02-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee