US2007624A - Cascade amplifier without back-coupling over the anode potential sources - Google Patents

Cascade amplifier without back-coupling over the anode potential sources Download PDF

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Publication number
US2007624A
US2007624A US659616A US65961633A US2007624A US 2007624 A US2007624 A US 2007624A US 659616 A US659616 A US 659616A US 65961633 A US65961633 A US 65961633A US 2007624 A US2007624 A US 2007624A
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United States
Prior art keywords
potential sources
anode potential
cascade amplifier
coupling over
anode
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Expired - Lifetime
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US659616A
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Ardenne Manfred Von
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Loewe Opta GmbH
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Loewe Opta GmbH
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements

Definitions

  • back-coupling is overcome by the fact that the first, third and fifth stages and the second, fourth and sixth stages of the valve are operated in common by different anode current sources.
  • the anode potentials of these stages are in phase, so that a gain reaction within each group is impossible.
  • a cascade tube amplifier of three or more stages comprising two anode current sources independent from one another, the anode of the odd stages being connected to the one, the anodes of the even number stages to the second of said current sources.

Description

..Fuiy 9, 193. M. VON ARDENNE WW CASCADE AMPLIFIER WITHOUT BACK COUPLING OVER THE ANODE POTENTIAL SOURCES Filed March 6, 1953 Patented 'July 9, 1935 UNITED STATES PATENT OFFICE CASCADE AMPLIFIER WITHOUT BACK-COU- PLING OVER THE ANODE POTENTIAL SOURCES :Manfred von Ardenne, Berlin, Germany, assignor to Radioaktiengesellschaft D. S. Loewe, Berlin- 'Steglitz, Germany, a company of Germany Application March 6, 1933, Serial No. 659,616 Germany March 5, 1932 1 Claim. (01. 179-171) (Granted under the provisions of sec. 14, act of March 2, 1927; 357 0. G. 5)
quency, because as regards these slow alternating potentials the blocking condensers of the anode potential sources and the anode control steadying system become ineffective. Systems linked up with house circuits are particularly liable to disturbance, as the inner resistance between the mains and the anodes is always a capacitative resistance.
According to the invention, back-coupling is overcome by the fact that the first, third and fifth stages and the second, fourth and sixth stages of the valve are operated in common by different anode current sources. The anode potentials of these stages are in phase, so that a gain reaction within each group is impossible.
In the drawing a form of embodiment of a four-stage cascade according to the invention is illustrated by way of example. The anodes of the systems I and 3 are linked up through the medium of the resistances 5 and 6 with the 10 anode current source It], and the anodes of the systems 2 and '4 through the medium of the resistances 6 and 8 with the anode current source 9.
I claim:
A cascade tube amplifier of three or more stages comprising two anode current sources independent from one another, the anode of the odd stages being connected to the one, the anodes of the even number stages to the second of said current sources. v
' MANFRED VON ARDENNE.
US659616A 1932-03-05 1933-03-06 Cascade amplifier without back-coupling over the anode potential sources Expired - Lifetime US2007624A (en)

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Application Number Priority Date Filing Date Title
DE396321X 1932-03-05

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GB (1) GB396321A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611024A (en) * 1946-09-20 1952-09-16 Seismograph Service Corp Seismic signal amplifying system
US9617041B1 (en) * 2009-02-19 2017-04-11 Ecoenvelopes, Llc. Conversion envelopes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611024A (en) * 1946-09-20 1952-09-16 Seismograph Service Corp Seismic signal amplifying system
US9617041B1 (en) * 2009-02-19 2017-04-11 Ecoenvelopes, Llc. Conversion envelopes

Also Published As

Publication number Publication date
GB396321A (en) 1933-08-03

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