AT129082B - Pretransmitter for amplifier. - Google Patents

Pretransmitter for amplifier.

Info

Publication number
AT129082B
AT129082B AT129082DA AT129082B AT 129082 B AT129082 B AT 129082B AT 129082D A AT129082D A AT 129082DA AT 129082 B AT129082 B AT 129082B
Authority
AT
Austria
Prior art keywords
pretransmitter
amplifier
transformer
grid
desc
Prior art date
Application number
Other languages
German (de)
Inventor
Richard Dr Feldtkeller
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT129082B publication Critical patent/AT129082B/en

Links

Landscapes

  • Amplifiers (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Microwave Amplifiers (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Vorübertrager für Verstärker. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 Es ist z. B. ungünstig, den Vorübertrager über eine Kapazität und einen Widerstand nach Art der   üblichen   Kapazitätswiderstandskopplung an den Übertrager   anzuschliessen,   wodurch an sieh der Gleichstrom 
 EMI2.2 
 belastet würde, deren Betrag gering ist gegenüber dem Scheinwiderstand der Gitterentladungsstrecke bei negativem Gitter. Die Resonanz des   Vorübertragers   würde dadurch so weit gedämpft werden, dass die Erzielung hoher Verstärkungen in gewissen Frequenzbereichen nicht mehr möglich sein würde. 



   PATENT-ANSPRÜCHE :
1. Anordnung für Verstärker mit Vorübertragern, dadurch gekennzeichnet, dass die durch den Gitterstrom hervorgerufene Veränderung der Induktivitäten des Vorübertragers durch Verwendung von magnetischen Stoffen hoher magnetischer Stabilität für den Übertragerkern oder durch Gleichstrom begrenzende Reihenschaltungen zur   Sekundärwicklung   des Vorübertragers beseitigt oder vermindert wird.



   <Desc / Clms Page number 1>
 



  Pretransmitter for amplifier.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 It is Z. B. unfavorable to connect the pre-transformer via a capacitance and a resistor in the manner of the usual capacitance-resistance coupling to the transformer, which means that the direct current can be seen
 EMI2.2
 would be charged, the amount of which is small compared to the impedance of the grid discharge path with a negative grid. The resonance of the pre-transformer would be dampened to such an extent that it would no longer be possible to achieve high gains in certain frequency ranges.



   PATENT CLAIMS:
1. Arrangement for amplifiers with pre-transformers, characterized in that the change in the inductances of the pre-transformer caused by the grid current is eliminated or reduced by using magnetic materials of high magnetic stability for the transformer core or by direct current limiting series connections to the secondary winding of the pre-transformer.

Claims (1)

2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass als Kernmaterial eine Legierung von etwa je der Hälfte Eisen und Nickel verwendet wird. EMI2.3 EMI2.4 2. Arrangement according to claim 1, characterized in that an alloy of about half iron and nickel is used as the core material. EMI2.3 EMI2.4
AT129082D 1928-04-05 1929-03-23 Pretransmitter for amplifier. AT129082B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE141174X 1928-04-05

Publications (1)

Publication Number Publication Date
AT129082B true AT129082B (en) 1932-07-11

Family

ID=5668552

Family Applications (1)

Application Number Title Priority Date Filing Date
AT129082D AT129082B (en) 1928-04-05 1929-03-23 Pretransmitter for amplifier.

Country Status (2)

Country Link
AT (1) AT129082B (en)
CH (1) CH141174A (en)

Also Published As

Publication number Publication date
CH141174A (en) 1930-07-15

Similar Documents

Publication Publication Date Title
AT129082B (en) Pretransmitter for amplifier.
AT160260B (en) Adjustable frequency transformer.
AT130832B (en) Transformer for several wavebands.
AT96409B (en) High frequency transformer.
AT92062B (en) Electromagnetic horn with two records.
AT95637B (en) Grist mill.
DE707878C (en) Magnetically stressed objects with high permeability
AT151160B (en) High frequency coil with iron core.
AT24763B (en) Electricity meter.
AT123131B (en) Multiple amplifier circuit.
AT156222B (en) Head for magnetic sound recorders.
AT153201B (en) Cement molding in the manner of Sorel cements.
AT103180B (en) Core transformer with auxiliary cores to increase the spread.
AT118135B (en) Magnetic material core.
AT146431B (en) Process for the production of ferromagnetic cores from iron powder.
AT134245B (en) Process for producing high-quality cast iron that is low in gas and low in oxide
AT101198B (en) Power turbine.
AT108101B (en) Power hammer.
AT114338B (en) Voltage indicator.
AT96449B (en) Current transformer for high voltage.
AT105380B (en) Process for the production of fine powders, especially metal powders, in vortex mills.
AT209589B (en) Ferromagnetic material, in particular for piezomagnetic oscillators
AT163114B (en) Kitchen sink
DE678854C (en) Permanent magnet steel
AT97822B (en) Injector.