DE693795C - reception - Google Patents

reception

Info

Publication number
DE693795C
DE693795C DE1936I0055563 DEI0055563D DE693795C DE 693795 C DE693795 C DE 693795C DE 1936I0055563 DE1936I0055563 DE 1936I0055563 DE I0055563 D DEI0055563 D DE I0055563D DE 693795 C DE693795 C DE 693795C
Authority
DE
Germany
Prior art keywords
reception
switching
rectifier
circuit
straight
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
DE1936I0055563
Other languages
German (de)
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke 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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Priority to DE1936I0055563 priority Critical patent/DE693795C/en
Application granted granted Critical
Publication of DE693795C publication Critical patent/DE693795C/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
    • H04B1/16—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)

Description

Rundfunkempfänger mit einer Einrichtung zum wahlweisen Umschalten von Geradeaus- auf überlagerungsempfang Die Erfindung betrifft einen, Rundfunkempfänger mit einer Einrichtung zum wahlweisen Umschalten von Geradeaus- auf überlagerungsempfan;g durch !eine Schaltungsanordnung, bei .der der Gleichrichter zur Niederfrequenzerzeugung bei der Umschalung auf G:eradeausempfang an einen Hochfrequenzabstimmkreis gelegt wird.Radio receiver with a device for selective switching from straight to superimposed reception The invention relates to a radio receiver with a device for selectively switching from straight to superimposing reception; g through a circuit arrangement in which the rectifier for low frequency generation when switching to G: straight-ahead reception is placed on a high-frequency tuning circuit will.

Bei. derartigen Empfängern ist es bekanlnt, die Mischröhre sowohl bei Geradeaus- als auch bei überlagerungsempfang an die Hochfrequenzabstimmkreise angeschaltet zu lasisen. Bei überlagerungsempfang wird ,in diesem Falle an Stelle des Gleichrichters eine Kapazität angeschaltet.At. Such receivers it is known to use the mixer tube both with straight-ahead as well as superimposed reception to the high-frequency tuning circuits turned on to lasisen. In the case of heterodyne reception, in this case of the rectifier switched on a capacitance.

Es hat sich nun aber als zweckmäßig herausgestellt, das Mischrohr gleichwütig mit der Umschaltung auf. Geradeausempfang von den Abstixiunkreisen zu trennen, um jede Kopplung :m, vermeiden.However, it has now been found to be useful to use the mixing tube indifferent to switching to. Straight ahead reception from the abstinence circles too separate to avoid any coupling: m,.

Jedoch -ergab sich dabei insofern eine Schwierigkeit, als durch .das Abschalten des Mischrohres eine Änderung der Abstimmung der Hochfrequenzkreise eintrat. Die Erfindung vermeidet nun, .diesem. Nachteil. Sie verwendet nämlich e inen Gleichrichter, dessen Kapazität eine solche Größe hat, daß die bei Abschaltung des Mischrohres auftretenden Kapazitätsänderungen ausgeglichen werden und somit die Abstimmung des Hochfrequenzkreises bei Umschaltung von einer Empfangsart auf die andere ungeändert bleibt.However, a difficulty arose insofar as the Switching off the mixing tube a change in the tuning of the high-frequency circuits occurred. The invention now avoids. This. Disadvantage. It uses a rectifier, whose capacity has such a size that when the mixing tube is switched off occurring capacity changes are compensated and thus the coordination of the High-frequency circuit unchanged when switching from one type of reception to the other remain.

Claims (1)

PATENTANSPRUCH: Rundfunkempfänger mit einer Einrichtung zum wahlweisen Umschalten von Geradeaus- auf überlagerungsempfang durch :eine Schaltungsanordnung, bei der ider Gleichrichter zur Niederfrequenzerzeugung bei der Umschaltung rauf Geradeausempfa.ng an einen Hochfrequenzabstimmkreis gelegt und dieser zugleich von dem Gitter der ihm bei überlagerungsempfang nachfolgenden Röhre abgetrennt wird, Igekennzeichn,et durch eine solche Größe der Eigenkapazität des Gleichrichters, daßdie Umschaltung die Abstimmung des Hoch.-frequenzkreises nicht ändert.PATENT CLAIM: Radio receiver with a device for optional Switching from straight to superimposed reception by: a circuit arrangement, with the ider rectifier for low frequency generation when switching up Geradeausempfa.ng placed on a high frequency tuning circuit and this at the same time from the grid of the tube following it in the case of superimposition reception is disconnected, Igekennzeichn, et by such a size of the self-capacitance of the rectifier, that the switchover does not change the tuning of the high-frequency circuit.
DE1936I0055563 1936-07-17 1936-07-17 reception Expired DE693795C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1936I0055563 DE693795C (en) 1936-07-17 1936-07-17 reception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1936I0055563 DE693795C (en) 1936-07-17 1936-07-17 reception

Publications (1)

Publication Number Publication Date
DE693795C true DE693795C (en) 1940-07-19

Family

ID=7194156

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1936I0055563 Expired DE693795C (en) 1936-07-17 1936-07-17 reception

Country Status (1)

Country Link
DE (1) DE693795C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647345A (en) * 1992-05-12 1997-07-15 Saul; Gilbert D. Respiratory stimulator & methods of use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647345A (en) * 1992-05-12 1997-07-15 Saul; Gilbert D. Respiratory stimulator & methods of use

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