GB382057A - Improvements in superheterodyne wireless receivers - Google Patents

Improvements in superheterodyne wireless receivers

Info

Publication number
GB382057A
GB382057A GB2901631A GB2901631A GB382057A GB 382057 A GB382057 A GB 382057A GB 2901631 A GB2901631 A GB 2901631A GB 2901631 A GB2901631 A GB 2901631A GB 382057 A GB382057 A GB 382057A
Authority
GB
United Kingdom
Prior art keywords
grid
oscillator
detector
received frequency
alternating
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
GB2901631A
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 GB2901631A priority Critical patent/GB382057A/en
Priority to GB1813832A priority patent/GB384591A/en
Publication of GB382057A publication Critical patent/GB382057A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

382,057. Valve circuits for wireless reception. WULLENWEBER, O., 6, Voldgade, Sonderburg, Denmark. Oct. 16, 1931, No. 29016. [Class 40 (v).] In a superheterodyne receiver, the received frequency is supplied directly to the grid of an oscillator-detector g, and is prevented from neutralizing itself across the grid circuit f, or leaking away from the grid to the cathode, by inserting one or more elements e of high alternating-current resistance or an oscillatory circuit tuned to the received frequency. The alternating-current resistance is varied stepwise or continuously to vary the coupling of the grid of the oscillator to its oscillatory circuit. When an ohmic resistance is used, it also acts as a grid-leak h, Fig. 2 (not shown). The oscillator-detector is a screened-grid valve or pentode.
GB2901631A 1931-10-16 1931-10-16 Improvements in superheterodyne wireless receivers Expired GB382057A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2901631A GB382057A (en) 1931-10-16 1931-10-16 Improvements in superheterodyne wireless receivers
GB1813832A GB384591A (en) 1931-10-16 1932-06-27 Improvements in superheterodyne wireless receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2901631A GB382057A (en) 1931-10-16 1931-10-16 Improvements in superheterodyne wireless receivers

Publications (1)

Publication Number Publication Date
GB382057A true GB382057A (en) 1932-10-20

Family

ID=10284902

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2901631A Expired GB382057A (en) 1931-10-16 1931-10-16 Improvements in superheterodyne wireless receivers
GB1813832A Expired GB384591A (en) 1931-10-16 1932-06-27 Improvements in superheterodyne wireless receivers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1813832A Expired GB384591A (en) 1931-10-16 1932-06-27 Improvements in superheterodyne wireless receivers

Country Status (1)

Country Link
GB (2) GB382057A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064120B (en) * 1956-10-27 1959-08-27 Standard Elektrik Lorenz Ag Overlay receiver that can be switched to several wave ranges

Also Published As

Publication number Publication date
GB384591A (en) 1932-12-08

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