GB358137A - Improvements in or relating to electric frequency-selective apparatus - Google Patents

Improvements in or relating to electric frequency-selective apparatus

Info

Publication number
GB358137A
GB358137A GB2071630A GB2071630A GB358137A GB 358137 A GB358137 A GB 358137A GB 2071630 A GB2071630 A GB 2071630A GB 2071630 A GB2071630 A GB 2071630A GB 358137 A GB358137 A GB 358137A
Authority
GB
United Kingdom
Prior art keywords
relating
selective apparatus
electric frequency
energy
fork
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
GB2071630A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2071630A priority Critical patent/GB358137A/en
Publication of GB358137A publication Critical patent/GB358137A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

358,137. Wireless and like receiving systems. PRIECHENFRIED, G. and ROBINSON, J., 29, George Street, Hanover Square, London. July 8, 1930, No. 20716. [Classes 40 (iii) and 40 (v).] Frequency-selective apparatus comprises a tuning fork 15 used as a highly selective mechanical resonator and means for suppressing interference passed by the fork by tapping energy from the input and applying this energy to oppose the interference in the output. The Figure shows an auxiliary circuit 12 arranged to give phase reversal, resistances 25, 26 and condenser 27, being provided for adjusting phase and amplitude.
GB2071630A 1930-07-08 1930-07-08 Improvements in or relating to electric frequency-selective apparatus Expired GB358137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2071630A GB358137A (en) 1930-07-08 1930-07-08 Improvements in or relating to electric frequency-selective apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2071630A GB358137A (en) 1930-07-08 1930-07-08 Improvements in or relating to electric frequency-selective apparatus

Publications (1)

Publication Number Publication Date
GB358137A true GB358137A (en) 1931-10-08

Family

ID=10150469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2071630A Expired GB358137A (en) 1930-07-08 1930-07-08 Improvements in or relating to electric frequency-selective apparatus

Country Status (1)

Country Link
GB (1) GB358137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115853B (en) * 1957-05-25 1961-10-26 Zellweger A G App Und Maschine Electromechanical belt filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115853B (en) * 1957-05-25 1961-10-26 Zellweger A G App Und Maschine Electromechanical belt filter

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