Answered: In order to express the effect of the…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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In order to express the effect of the internal capacitors of BJT and the high frequency reception, the current gain expression depending on the frequency (Figure b) (hfe) is used in the case of collector emitter short circuit, voltage source connected at base end and emitter grounded (Figure la).. The catalog information of the 2N2222 transistor is given in Figure Ic. In the catalogue, when Ic=20 mA, it is seen as fT=250 MHz. a) Find the total capacitor effect for the case where gm> > wCμ. (Cpi) + (Cμ) = ?pF

B
E
B'
C₂
C₂
Şekil 1a:
8m V
im
C
DYNAMIC CHARACTERISTICS
Transition Frequency
E
NPN SILICON PLANAR SWITCHING TRANSISTORS
ELECTRICAL CHARACTERISTICS (Ta-25°C unless specified otherwise)
DESCRIPTION
SYMBOL TEST CONDITION
fr Ic=20mA
f-100MHz
Şekil 1c:
A
250
0 dB
(dB)
2221
"
#
2N2221
2N2222
2222
MIN MAX MIN MAX
250
23 dB
-6 dB/octave
Şekil 1b:
UNIT
MHz
APY
(log scale)

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