FR665739A - Electric transmission systems - Google Patents

Electric transmission systems

Info

Publication number
FR665739A
FR665739A FR665739DA FR665739A FR 665739 A FR665739 A FR 665739A FR 665739D A FR665739D A FR 665739DA FR 665739 A FR665739 A FR 665739A
Authority
FR
France
Prior art keywords
transmission systems
electric transmission
electric
systems
transmission
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
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR665739A publication Critical patent/FR665739A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0138—Electrical filters or coupling circuits
    • 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
    • H03B5/34—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 vacuum tube
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/0014—Structural aspects of oscillators
    • H03B2200/0018—Structural aspects of oscillators relating to the cutting angle of a crystal, e.g. AT cut quartz
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775—Parallel LC in shunt or branch path
FR665739D 1928-10-26 1928-12-04 Electric transmission systems Expired FR665739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3115628A GB324639A (en) 1928-10-26 1928-10-26 Improvements in two way electric signalling systems

Publications (1)

Publication Number Publication Date
FR665739A true FR665739A (en) 1929-09-23

Family

ID=10318865

Family Applications (2)

Application Number Title Priority Date Filing Date
FR665739D Expired FR665739A (en) 1928-10-26 1928-12-04 Electric transmission systems
FR700781D Expired FR700781A (en) 1928-10-26 1929-10-30 Improvements to electric oscillation generators controlled by piezoelectric devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR700781D Expired FR700781A (en) 1928-10-26 1929-10-30 Improvements to electric oscillation generators controlled by piezoelectric devices

Country Status (4)

Country Link
BE (1) BE356146A (en)
FR (2) FR665739A (en)
GB (2) GB294061A (en)
NL (1) NL26563C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0469193A1 (en) * 1990-08-03 1992-02-05 Koninklijke Philips Electronics N.V. Temperature stabilized crystal oscillator

Also Published As

Publication number Publication date
NL26563C (en)
GB294061A (en) 1928-07-19
FR700781A (en) 1931-03-06
BE356146A (en)
GB324639A (en) 1930-01-27

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