SCIENTIFIC ABSTRACT PASZTORNICZKY, L. - PATAKI, E.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001239420011-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: January 3, 2017
• Document Release Date: June 21, 2000
• Sequence Number: 11
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

AUTHOR:
TlTLE:
PFIUODICAL:
26903
H/009/61/000/005/001/003
D021/D105
Pa'sztorniczky, Lajos
Instability and stabilization of tuned transistor amplifier
stages
Magyar Hirada'stechnika, no. 5, 1961, 180-186
TEXT: The article is an abridged version of the author's dissertation dealing
with a new method of stability testing and stabilization of tuned transistor
amplifier stages. With the help of linear four-pole equations of tuned tran-
sistor amplifier stages the author proves that, for practical purposes, the con-
ventional stability testing methods are extremely complicated even in the case
of amplifier stages with known elements. The use of input and output admit-
tances for stability testing, on the other hand, not only simplifies stability
testing, but also makes it convenient for designing amplifier stages of pre-
scribed stability. With the help of circular graphs the author investigates
the state of amplifier stages and comes to the conclusion that stability can be
achieved (a) by neutralization, (b) by additional conductances, and (c) by
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26903
11/00 61/000/005/001/003
Instability and stabilization ...... D021YI)105
neutralization and additional conductances simultaneously. The method, re-
commended by the author, is based on the use of additional conductances. it
presupposes a stable transistor and includes the additional conductances with
a given stabilizing factor, stabilizing the amplifier stages in the transistor
parameters. After deriving the equations and explaining this inethod, the author
states that inspite of the disadvantage of' gaining sniMer amplification at
each stage than in the case of the neutralizing method, the above process has
the following main advantages: (1) the complicated neutralization process is
elimin.-ted, (2) the maintenance of stage stability is insured, and (3) for de-
signing coupling circuits the conventional computation method can be used.
When using bandpass fi-Iter, in case of a given stability factor, smal-ler addi-
tional conductance is needed. in closing the author gives the practical appli-
cation of his method through the analysis of the 11OC4511 medium-frequency VALVO
transistor. There are 10 figures and 6 references; 2 Soviet-bloc and 4 non-
Soviet bloc. The references to the English-language publications read as
follows: H.W. Bode: Network Analysis and Feedback Amplifier Design, New York,
1946.,A.W.Lo, R.O.Endres, J.Zawels, etc. Transistor Electronic, 1956.,A.P.
Stern: Stability and Power Gain of Tuned Transistor Ampl.ifier..Proc. IRE, 1957
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26903
H/009/61/000/005,/001/003
Instability and stabilization ..... D021/D105
March Vol 45. No 3.
ASSOCIATION: Budapesti MBszaki Egyetem Vezete'kne'lkUi Hirada'stectinikai Tansze'k
(Department of' Radio communication Engineering of the Budapest
Technical University)
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BASZYNSKI, Boleslaw, irgr inz.; PASNINSKI, Kazimierz, mgr
Construction of sewage purification stations must be given
highest priority among capital investments. Przegl techn 85
no.2t4 12 Ja 164.

PASZYC. Stefan
Photovoltaic effect of phloxine and itsailver salt in aqueaus
and nonaqueous solutionse Mat chemis, no.6:6841 162.
1. Katedra i Zaklad Chemii Fizycznejq Uniwerytet im. Adama
Michiewiczap Poznan*

-) U373
Z'Y' 1,60V P/512/62/000/006/003/003
5)915W E071/E436
AUTHOR: Paszyc, Stefan
TITLE: The photovoltaic effect of phloxine and its silver salt
in aqueous and non-aqueous solutions
SOURCE: Poznan. Uniwarsytet. Zeszyty naukowe. no.40.
Matomatyka, fizyka, chemia. no.6. 1962. 68-81
TEXT: The work was carried out in order to study the photovoltaic
effect of phloxine (sodium salt of tetrabromo-tetrachlorofluoresceine)
and its silver salt in twice distilled water, aqueous solution of
gelatine (0.1%), absolute alcohol and pyridine. The influence of
the medium, the concentration of the (lye (0.001 and 0.0001M) and
the state of dispersion on sign and value of the potential measured
was studied. Changes in the potential of a platinum electrode
were measurod at 250C by the compensation method in darkness,
visible and ultraviolet light for the solvent, the dye solution
and the silver salt solution. For aqueous and gelatine solution
of phloxine only slight changes of potential were observed in
both visible and ultraviolet light. More significant changes for
the alcoholic solution, particularly in ultraviolet light, was
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P/512/62/000/606/CC3/GG3
The photovoltaic E071/E;436
explained by the superimposition of pi-iotolysis and photooxidation
of the alcohol itself and a slight photovoltaic effect of the
alcohol solution of phloxine. A rise of the potential in the
pyridine solutions in visible light was probably due to a change
in the redox potential in the double electrical layer of the
system: Pt electrode/pyridine solution of the dye and the
transitional form of the dye under irradiation. Changes of the Vill"
potential in aqueous and alcoholic solutions (of silver salt) were
probably due to coagulation and photoagregation of colloidal
particles of the salt, photolysis of the alcohol and the salt
(precipitation of metallic silver). In aqueous gelatine solution
the irradiation had little influence on the electrode potential.
The silver salt dissolves well in pyridine forming a solution
which gives no changes of potential under the influence of
irradiation. The formation of a complex salt, soluble in
pyridine and insensitive to light (no change of colour or
precipitation of silver after a few hours of irradiation) was
postulated. There are 8 figures.
ASSOCIATION: Katedra i zakrad chemii fizycznej uniwersytetu im.
Card 2/2 A. Mickiewicza (Department and Institute e ofc 1) ysical
Chemistry of the University im. A. Micki wi z

PASZYC, Stefan
Becquerel effect of ac1d alizarina red (D) and its silver salt in
aqueous and non-aqueous systems. Mat chemift 4:23-31 '61.
1. Katedra, Chemli Fizycznej, Poznan.

PASZYC, Stefan
Becquere3 effoot of mercurous ealte of some orpanic dyes of the
xanthene group and azo dyes in aqueous systems. Mat chemin 4:
33-42 161.
1. Katedra Chemii Fizycznej, Poznan.

PASZYC, Stefan
Becquerel effect of acid alizarine red (B) and its silver salt in
aqueous and non-aqueoua systems. Mat chenia 4:23-31 161.
1. Universy-tet im. Adama Mickievicza w Poznaniu, Katedra Chemii
Fizycznej.

PASZYC Stefan
. M .
Becquerel effect of mercurous salts or some organic ckves of the
xanthene group and azo-