DE561829C - Frame receiver in which the frame winding can be switched to adapt to the low and high waves of the broadcast area - Google Patents

Frame receiver in which the frame winding can be switched to adapt to the low and high waves of the broadcast area

Info

Publication number
DE561829C
DE561829C DENDAT561829D DE561829DD DE561829C DE 561829 C DE561829 C DE 561829C DE NDAT561829 D DENDAT561829 D DE NDAT561829D DE 561829D D DE561829D D DE 561829DD DE 561829 C DE561829 C DE 561829C
Authority
DE
Germany
Prior art keywords
frame
winding
switched
low
adapt
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
DENDAT561829D
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.)
Heliowatt Werke Elektrizitaet GmbH
Original Assignee
Heliowatt Werke Elektrizitaet GmbH
Publication date
Application granted granted Critical
Publication of DE561829C publication Critical patent/DE561829C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Description

Rahmenempfänger, bei dem die Rahmenwicklung zur Anpassung an niedere und hohe Wellen des Rundfunkbereichs umschaltbar ist Die Erfindung betrifft einen Rahmenempfänger, der sich insbesondere zur Verwendung von Kofferapparaten eignet. Derartige Empfänger müssen für die niederen und für die hohen Wellen des Rundfunkbereiches eingerichtet sein, wobei der übergang zwischen den verschiedenen Wellen möglichst einfach ausführbar sein muß.Frame receiver in which the frame winding to adapt to lower and high waves of the broadcasting range is switchable. The invention relates to a Frame receiver, which is particularly suitable for the use of suitcase apparatus. Such receivers must be used for the low and high waves of broadcasting be set up, the transition between the different waves as possible must be easy to execute.

Gemäß. der Erfindung wird, wie die beiliegende Zeichnung zeigt, eine Rahmenantenne mit drei Wicklungsteilen angewendet. Zwei Wicklungsteile sind gleich und werden in dem kleinen Wellenbereich I parallel geschaltet, während der dritte zweckmäßig symmetrisch zwischen den beiden anderen angeordnete Teil abgeschaltet ist. Bei Umschaltung auf den hohen Wellenbereich II werden dagegen alle drei Windungsteile in Serie geschaltet.According to. the invention, as the accompanying drawing shows, a Loop antenna with three winding parts applied. Two parts of the winding are the same and are connected in parallel in the small wave range I, while the third suitably switched off symmetrically between the other two arranged part is. When switching to the high wave range II, on the other hand, all three parts of the winding are turned connected in series.

Da sich bei der Umschaltung der Rahmeewicklung die Wicklungskapazität merklich ändert, wird gemäß. der Erfindung gleichzeitig mit der Umschaltung des Rahmens im sekundären Schwingungskreis -ein von vornherein dieser Wicklungskapazität angepaßter Kondensator zu- und abgeschaltet. Da die Wicklungskapazität häufig kleiner ist, wenn alle Wicklungen in: Serie liegen, als wenn zwei Wicklungsteile parallel geschaltet sind, muß in solchem Fall dieser feste Kondensator im Sekundärkreis bei kleinen Wellen zu-, bei großen Wellen abgeschaltet werden.. Dieser Schaltvorgang kann selbstverständlich mit der Umschaltung der Spulen gleichzeitig und mit Hilfe eines einzigen Schalters erfolgen.Since when switching the frame winding, the winding capacitance changes noticeably, is according to. the invention simultaneously with the switching of the Frame in the secondary oscillation circuit - from the start this winding capacitance adapted capacitor switched on and off. Because the winding capacity is often smaller is when all windings are in series, as when two winding parts are parallel are connected, this fixed capacitor in the secondary circuit must in such a case small waves are switched on, large waves switched off .. This switching process can of course with the switching of the coils at the same time and with the help a single switch.

Claims (2)

PATRNTANSPRÜCHR: i. Rahmenempfänger, bei dem die Rahmenwicklung zur Anpassung an niedere und hohe Wellen des Rundfunkbereichs umschaltbar ist, dadurch gekennzeichnet, daß ein Schalter vorgesehen ist, der in Verbindung mit der Rahmenumschaltung im Sekundärkreis einen der Rahmenkapazität angepaßten Zusatzkondensator zu- bzw. abschaltet. PATENT CLAIM: i. Frame receiver, where the frame winding to Adaptation to low and high waves of the broadcasting range is switchable, thereby characterized in that a switch is provided which is in connection with the frame switching In the secondary circuit an additional capacitor adapted to the frame capacitance is connected or turns off. 2. Rahmenempfänger nach Anspruch i, dadurch gekennzeichnet, daß die Rahmenwicklung aus drei Teilen, von denen zwei gleich sind, besteht und daß im niederen Wellenbereich die beiden gleichen Wicklungsteile parallel, der dritte Wicklungsteil abgeschaltet, im Sekundärkreis der Zusatzkondensator zugeschaltet und im hohen Wellenbereich alle Wicklungsteile hintereinandergeschaltet, im Sekundärkreis der Zusatzkondensator abgeschaltet ist.2. Frame receiver according to claim i, characterized in that the Frame winding consists of three parts, two of which are equal, and that in the lower Shaft area the two same winding parts in parallel, the third winding part switched off, switched on the additional capacitor in the secondary circuit and in the high wave range all winding parts connected in series, the additional capacitor in the secondary circuit is switched off.
DENDAT561829D Frame receiver in which the frame winding can be switched to adapt to the low and high waves of the broadcast area Expired DE561829C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE561829T

Publications (1)

Publication Number Publication Date
DE561829C true DE561829C (en) 1932-10-19

Family

ID=6566332

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT561829D Expired DE561829C (en) Frame receiver in which the frame winding can be switched to adapt to the low and high waves of the broadcast area

Country Status (1)

Country Link
DE (1) DE561829C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920536C1 (en) * 1989-06-22 1991-01-17 Texas Instruments Deutschland Gmbh, 8050 Freising, De
DE102006034559A1 (en) * 2006-07-26 2008-02-14 Infineon Technologies Ag An antenna arrangement and method for receiving and transmitting signals in a first frequency range and in a second frequency range

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920536C1 (en) * 1989-06-22 1991-01-17 Texas Instruments Deutschland Gmbh, 8050 Freising, De
DE102006034559A1 (en) * 2006-07-26 2008-02-14 Infineon Technologies Ag An antenna arrangement and method for receiving and transmitting signals in a first frequency range and in a second frequency range

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