SCIENTIFIC ABSTRACT SIMONOV, YU.L. - SIMONOVA, L.I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001550720001-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 24, 2000
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

82978
s/Lli2/60/003/002/016/022
E192/E382
Evaluation of the Condenser Capacitance in the Emitter
Circuit of a Transistor in Tuned Amplifiers
the input and the output resistances of the amplifier are
determined. These resistance are expressed by Eqs. (6) and
(7). Tile input resistance can become negative when the
inequality defined by Eq. (8) is fulfilled, whereas the
output resistance is negative when the condition expressed
by Eq. (10) is met. The final expression for the emitter
capacitance C is given by;
12
C C + (12)
-wh er e
11 + 21
2r 21 W2 r21R
The quantities ill Ye2l and r 21 in Eq. (12) are defined
on p. 288. Experiments showed that Eq. (12) permits
Card 2/3

82978
s/i42/60/003/002/018/022
El?J/E~81i
Evaluation of the Condenser Capac an e n the Emitter
Circuit of a Transistor in Tuned Amplifiers
determination of a satisfactory value of C
There are 3 figures and 5 Soviet references, one of which
is translated from English#
ASSOCIATION: Kafedra radiotekhniki Kharlkovskogo aviats-
ionnogo instituta (Chair of Radio-Engineering
of the Kharlkov Aviation Institute)
SUBMITTED: May 30, 1959, initially;
September 21, 1959, after revision.
Card 3/5

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IT
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With 1 1. 1., )t It,;; V/109-5-3-11/26
'Alavactf".I.:e thir_. jf~;jff -Jr.-t.juri or. the Input coriduc-tance
Al'tf,i- ",t)mo ttil.lori.,; and t.-anr;forma-
h,
i, i.; appj.vo.nt trial. IllLIltlt,*j not
ol, CL
TI..) "Lnd T2) 1 A.l...1z_frILrtj: Liflat, It, the area
ul, k~ollf-cLof. i:.lv~ 'ult (2) CL Is the
'Ally V"Ilm:~; oll' CL uvo f'Q'Ir'd "0'

"I u1;
1.071- -..1;
.3~11,,~;tltlitlrw (3) and Into (2), the fGr
l;llllll;l;lm maj"CiLtUdU Of' av~! o'btaint.-J:
wliqre
(7)
Cai-d 1~/l

I 11. t ."I Al
1-mic-ontiuctov
YTJ
I I t Q I 1'(,'l I t
V,(* t I o i i two
4P

tt
C) VT~;

C I c)

I.o 1, he Ia;-, at, an,; combinat,ioil of :lleatuonln~-
u C hoth -11,cultz; Ri,2 > 0 tll(, 'arriplit'le- Will Le .---tal,le.
To -achicvc- it, L:,
condition is l'ound

r a I
v id t i i rt. Lf I re A.,3 a r.. r.- e oz;cilla-
'p o ed bl- the
HL (F -1 t
io)

;,A)v 1~~l
CP

T-1

rid lo I collowr, ti-lat a
wtiue or itioer-t(A i-lej-,at v e n7,-.;Ijtanco ot' tile secorld
(c-oliltA f1g, Crom thc- erd of the amplifle") CL

1 L I)

J! If
o'O", 0.60,;
Ift tw,
l-j+I)

1('~ Ic_ 0 1 t can
1; 1.; L 1;1'a 'm Ili., ta"A
rvirnbo- Of, %"I-a -( I ~~ !
I:, 1 .1 c-If :-It 0

ahl I I lal",.; 1,; of' 1-1, .,., o I I; it v, (. fim I)] I rlr~ r:;7 7
WIth
uie it 1, 1 n t E, r (~. o t i
to tiote 1.1tat s1--00,11ty (--wid1ticirio and equatiorl.; f c) r
ma'.~111luirl aril p.-I 11'.1 (,-at,lon cottlolde W1111k ti'looe for
t1l)w T111:; (_'In br-, bj thf~-
;;(A oc t Im I (W Tl-.', I l,Lr)f 'd C~(Il I I W1 If 'I It, Ull't_'Illt i-111d Y--AIUP(~(!
J)"t I -ailw I,'-- t,;; (W trlndf!~;. (5) StabilltY
;t,- e
Cuj)dltlk~lk l'ur Rtl---.(manc(~ Witli common P ~
All. utialy.;k; (W the abovc :;h0vied that relatlon.,; dc~:rlved
I*or,_-1rt_-.u1.t.iw1t.h curtirion cmlLt~:r can be il-ed. (6) con-
ct~vnlnje ' A c c 111 -,a cy 0 1* 3I-_Lb11.1tj G'Orldltlons aa Dr~rlved.
Forrailla (1..)) ww der-tv(A mick--v t he UL; o utrip 1; Ion that tho~-,
tv1i"If" pal-aulfiter.; aild the
0 111,' LVC r;un.Aant f'or zm: 11 de-
(I I' t I I q2 1, 1 L t,I_- V .Ill. t.h(,, above analy;;e.-. the illpl.lt
wu; u.-.f.!d. Thl.; p(-).-,c.; thc,, problem, rX hcTvi
th,,, ::;t;Lb.L11t.y ;oridltlcn:~, are. For _-urALrQ1
Virpo..'o.; ;.I derlvatlorl ot, :;t-ab-111ty (,-oridition;. th,l
iw,thod au-a'L.v;;1,; (it' llricar amplIflev 'A!.Lh11'ty
,!av,~ I
1~-, ~tj:plt"fl tile. :,Olai.-T.11j.t~y f'!,':

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