US1749851A - Circuit controller - Google Patents

Circuit controller Download PDF

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Publication number
US1749851A
US1749851A US25548028A US1749851A US 1749851 A US1749851 A US 1749851A US 25548028 A US25548028 A US 25548028A US 1749851 A US1749851 A US 1749851A
Authority
US
United States
Prior art keywords
contact
windings
transformer
circuit
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 - Lifetime
Application number
Other languages
English (en)
Inventor
Harold C Silent
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Priority to US25548028 priority Critical patent/US1749851A/en
Priority claimed from GB3115628A external-priority patent/GB324639A/en
Priority to DEST45453D priority patent/DE529634C/de
Application granted granted Critical
Publication of US1749851A publication Critical patent/US1749851A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H03B5/34—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
    • 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
    • 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
US25548028 1928-02-18 1928-02-18 Circuit controller Expired - Lifetime US1749851A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US25548028 US1749851A (en) 1928-02-18 1928-02-18 Circuit controller
DEST45453D DE529634C (de) 1928-02-18 1929-02-17 Schaltungsanordnung zur Sperrung von UEbertragungswegen, bei welcher die Sperrung durch OEffnen von Kontakten erfolgt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25548028 US1749851A (en) 1928-02-18 1928-02-18 Circuit controller
GB3115628A GB324639A (en) 1928-10-26 1928-10-26 Improvements in two way electric signalling systems

Publications (1)

Publication Number Publication Date
US1749851A true US1749851A (en) 1930-03-11

Family

ID=26260768

Family Applications (1)

Application Number Title Priority Date Filing Date
US25548028 Expired - Lifetime US1749851A (en) 1928-02-18 1928-02-18 Circuit controller

Country Status (2)

Country Link
US (1) US1749851A (de)
DE (1) DE529634C (de)

Also Published As

Publication number Publication date
DE529634C (de) 1931-07-15

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