GB543639A - Improvements in or relating to the control mechanism of wireless receivers - Google Patents

Improvements in or relating to the control mechanism of wireless receivers

Info

Publication number
GB543639A
GB543639A GB883640A GB883640A GB543639A GB 543639 A GB543639 A GB 543639A GB 883640 A GB883640 A GB 883640A GB 883640 A GB883640 A GB 883640A GB 543639 A GB543639 A GB 543639A
Authority
GB
United Kingdom
Prior art keywords
switches
condenser
plate
inductances
switch
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
GB883640A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB883640A priority Critical patent/GB543639A/en
Publication of GB543639A publication Critical patent/GB543639A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings

Landscapes

  • Push-Button Switches (AREA)

Abstract

543,639. Wireless receiving apparatus. PHILIPS LAMPS, Ltd. (Naamlooze, Vennootschap Philips' Gloeilampenfabrieken). May 17, 1940, No. 8836. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 21, 1940. ] [Class 40 (iv)] [Also in Group XXXVI] In a wireless receiver having one or more switch assemblies for performing more than two switching operations by direct actuation by pushbuttons or by actuation by a motor controlled by push-buttons, each switch assembly is built up from two or more electrically connected switches which have fewer switching positions than there are switching operations. As shown in Fig. 1, a tuning condenser 4 can be connected to any of the four inductances 23 ... 26 by means of two coupled switches 14, 15 in series wifh a switch 16, these switches being connected to a pair of levers 12, 13. These levers and the condenser are actuated by screws 10, 11, 15 on a plate 3 when a push-button t attached to the plate is depressed. The adjustment of the screw 5 in the plate 3 determines the setting given to the condenser ; and the positions of the screws 10, 11 in one of the holes 6 or 7 and 8 or 9 respectively in the plate 3 determines the position of the switches and therefore the particular inductance connected to the condenser. These inductances may be for wave-range selection or for bandwidth adjustment. In another arrangement, Fig. 2, two switches 34, 35 are connected as shown between the inductances and the tuning condenser.
GB883640A 1940-05-17 1940-05-17 Improvements in or relating to the control mechanism of wireless receivers Expired GB543639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB883640A GB543639A (en) 1940-05-17 1940-05-17 Improvements in or relating to the control mechanism of wireless receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB883640A GB543639A (en) 1940-05-17 1940-05-17 Improvements in or relating to the control mechanism of wireless receivers

Publications (1)

Publication Number Publication Date
GB543639A true GB543639A (en) 1942-03-06

Family

ID=9860146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB883640A Expired GB543639A (en) 1940-05-17 1940-05-17 Improvements in or relating to the control mechanism of wireless receivers

Country Status (1)

Country Link
GB (1) GB543639A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549789A (en) * 1947-12-31 1951-04-24 Jr Thomas M Ferrill Tank circuit apparatus
DE1035712B (en) * 1955-08-13 1958-08-07 Philips Nv Switching device operated by pushbuttons, especially waveband switch for radio receivers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549789A (en) * 1947-12-31 1951-04-24 Jr Thomas M Ferrill Tank circuit apparatus
DE1035712B (en) * 1955-08-13 1958-08-07 Philips Nv Switching device operated by pushbuttons, especially waveband switch for radio receivers

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