GB661631A - Improvements in or relating to frequency selective circuits - Google Patents

Improvements in or relating to frequency selective circuits

Info

Publication number
GB661631A
GB661631A GB18113/49A GB1811349A GB661631A GB 661631 A GB661631 A GB 661631A GB 18113/49 A GB18113/49 A GB 18113/49A GB 1811349 A GB1811349 A GB 1811349A GB 661631 A GB661631 A GB 661631A
Authority
GB
United Kingdom
Prior art keywords
reeds
bridges
signalling
july
frequencies
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
GB18113/49A
Other languages
English (en)
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
Western Electric 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
Priority claimed from US38130A external-priority patent/US2630482A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB661631A publication Critical patent/GB661631A/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
    • 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
    • H03H7/0153—Electrical filters; Controlling thereof

Landscapes

  • Selective Calling Equipment (AREA)
  • Amplifiers (AREA)
GB18113/49A 1948-07-10 1949-07-08 Improvements in or relating to frequency selective circuits Expired GB661631A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38130A US2630482A (en) 1948-07-10 1948-07-10 Tuned vibrating reed selective circuit
US104755A US2583542A (en) 1948-07-10 1949-07-14 Vibratory reed-controlled oscillator

Publications (1)

Publication Number Publication Date
GB661631A true GB661631A (en) 1951-11-21

Family

ID=26714889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18113/49A Expired GB661631A (en) 1948-07-10 1949-07-08 Improvements in or relating to frequency selective circuits

Country Status (3)

Country Link
US (1) US2583542A (enrdf_load_stackoverflow)
BE (1) BE488562A (enrdf_load_stackoverflow)
GB (1) GB661631A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707234A (en) * 1952-08-22 1955-04-26 American Time Products Inc Tuning fork oscillators
US2759103A (en) * 1952-12-18 1956-08-14 Motorola Inc Oscillator circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665397A (en) * 1923-05-09 1928-04-10 Leeds & Northrup Co Electrical measuring apparatus
US2319965A (en) * 1941-06-14 1943-05-25 Bell Telephone Labor Inc Variable frequency bridge stabilized oscillator
US2435487A (en) * 1943-02-01 1948-02-03 Zenith Radio Corp Electromechanical vibrator

Also Published As

Publication number Publication date
BE488562A (enrdf_load_stackoverflow)
US2583542A (en) 1952-01-29

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