DE742438C - Circuit for superimposition reception in which a diode is used as a mixing tube - Google Patents

Circuit for superimposition reception in which a diode is used as a mixing tube

Info

Publication number
DE742438C
DE742438C DEP81462D DEP0081462D DE742438C DE 742438 C DE742438 C DE 742438C DE P81462 D DEP81462 D DE P81462D DE P0081462 D DEP0081462 D DE P0081462D DE 742438 C DE742438 C DE 742438C
Authority
DE
Germany
Prior art keywords
circuit
diode
mixing tube
superimposition
reception
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
DEP81462D
Other languages
German (de)
Inventor
Dr Johan Haantjes
Bernardus Dominicus H Tellegen
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.)
Philips Intellectual Property and Standards GmbH
Original Assignee
Philips Patentverwaltung GmbH
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 Patentverwaltung GmbH filed Critical Philips Patentverwaltung GmbH
Application granted granted Critical
Publication of DE742438C publication Critical patent/DE742438C/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
    • H03D7/02—Transference of modulation from one carrier to another, e.g. frequency-changing by means of diodes
    • 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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Description

Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden:To distinguish the subject of the application from the state of the art, the granting procedure the following publications have been considered:

USA.-Patentschrift Nr. 1 958 881;U.S. Patent No. 1,958,881;

britische - - 460 408.British - - 460 408.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche: g5Claims: g5 1. Schaltung für Überlagerungsempfang, bei der eine Diode als Mischröhre verwendet wird und in den Diodenkreis ein Netzwerk aufgenommen ist, das einen Zwischenfrequenzscliwingungskreis, eine Impedanz für die Empfangsschwingungen und eine Quelle der örtlichen Schwingungen enthält, dadurch gekennzeichnet, daß in dem Diodenkreis in Reihe mit dem gesamten erwähnten Netzwerk ein nur teilweise von einem Glättungskondensator überbrückter Widerstand geschaltet ist, der so bemessen ist, daß er die Steilheit der Diodencharakteristik herabsetzt.1. Circuit for superimposition reception in which a diode acts as a mixer tube is used and a network is included in the diode circuit, the intermediate frequency resonance circuit, a Impedance for the received vibrations and a source of the local vibrations contains, characterized in that in the diode circuit in series with the entire mentioned network a resistor that is only partially bridged by a smoothing capacitor is connected, which is dimensioned in such a way that it reduces the steepness of the diode characteristic. 2. Schaltung nach Anspruch 1, gekennzeichnet durch Anwendung einer so hohen Oszillatorspannung, daß unerwünschte Effekte, wie Modulationsbrumm, Kreuzmodulation und Pfeiftöne, vermieden sind.2. Circuit according to claim 1, characterized by using such a high oscillator voltage that undesirable effects such as modulation hum, cross modulation and whistling sounds are avoided.
DEP81462D 1939-09-07 1940-11-02 Circuit for superimposition reception in which a diode is used as a mixing tube Expired DE742438C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL217360X 1939-09-07

Publications (1)

Publication Number Publication Date
DE742438C true DE742438C (en) 1944-04-25

Family

ID=19779134

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP81462D Expired DE742438C (en) 1939-09-07 1940-11-02 Circuit for superimposition reception in which a diode is used as a mixing tube

Country Status (6)

Country Link
BE (1) BE440599A (en)
CH (1) CH217360A (en)
DE (1) DE742438C (en)
FR (1) FR873268A (en)
GB (1) GB607027A (en)
NL (1) NL57009C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073555B (en) * 1957-11-14 1960-01-21 Compagnie Generale de Telegra phie sans FiI, Paris Non-linear transistor circuit arrangement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1958881A (en) * 1930-07-18 1934-05-15 Westinghouse Electric & Mfg Co Amplifier
GB460408A (en) * 1935-08-19 1937-01-27 Philips Nv Improvements in or relating to superheterodyne radio receivers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1958881A (en) * 1930-07-18 1934-05-15 Westinghouse Electric & Mfg Co Amplifier
GB460408A (en) * 1935-08-19 1937-01-27 Philips Nv Improvements in or relating to superheterodyne radio receivers

Also Published As

Publication number Publication date
BE440599A (en)
FR873268A (en) 1942-07-07
NL57009C (en)
CH217360A (en) 1941-10-15
GB607027A (en) 1948-08-24

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