GB250162A - Improvements in radio receiving apparatus - Google Patents

Improvements in radio receiving apparatus

Info

Publication number
GB250162A
GB250162A GB14857/25A GB1485725A GB250162A GB 250162 A GB250162 A GB 250162A GB 14857/25 A GB14857/25 A GB 14857/25A GB 1485725 A GB1485725 A GB 1485725A GB 250162 A GB250162 A GB 250162A
Authority
GB
United Kingdom
Prior art keywords
condensers
capacities
capacity
plate
hazeltine
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
GB14857/25A
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=21798864&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB250162(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB250162A publication Critical patent/GB250162A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/04—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
    • H01G5/06—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/24—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Structure Of Receivers (AREA)
  • Amplifiers (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

250,162. Hazeltine Corporation, (Assignees of Hazeltine, L. A.). April 3, 1925, [Convention date]. Condensers.-The tuning condensers of a wireless receiver are operated simultaneously by turning a single shaft 12 by means of a handle or pointer which indicates the wavelengths on a scale 27, and in order to compensate for slight discrepancies in the characteristics of the three condensers, means are provided for adjusting the nett capacities in the three tuned circuits so that they may be equal at the minimum and at the maximum settings. The adjusting means comprise : (1) a fixed but adjustable plate 10, Figs. 2b and 2<c>, clamped to the insulating base 16 of each condenser and electrically connected to the movable plates. The plate 10 is adjusted to ensure equality of the capacities at the minimum setting. (2) An outside stationary plate 11 which can be moved axially to adjust the rate of change of capacity with angular movement, and so to secure equality of capacity at the maximum setting.
GB14857/25A 1925-04-03 1925-06-08 Improvements in radio receiving apparatus Expired GB250162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20484A US1755114A (en) 1925-04-03 1925-04-03 Unicontrol signaling system

Publications (1)

Publication Number Publication Date
GB250162A true GB250162A (en) 1926-09-02

Family

ID=21798864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14857/25A Expired GB250162A (en) 1925-04-03 1925-06-08 Improvements in radio receiving apparatus

Country Status (6)

Country Link
US (1) US1755114A (en)
AT (1) AT118870B (en)
DE (1) DE534456C (en)
FR (1) FR599767A (en)
GB (1) GB250162A (en)
NL (1) NL18770C (en)

Also Published As

Publication number Publication date
NL18770C (en)
FR599767A (en) 1926-01-20
AT118870B (en) 1930-08-25
DE534456C (en) 1931-09-26
US1755114A (en) 1930-04-15

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