a. Using the characteristics of Fig. 3.24, determine b ac at /c= 14 mA and V ce- 3 V. b. Determine beta dc at /c =1 mA and V cE = 8 V. c. Determine beta ac at /c= 14 mA and V CE = 3 V. d. Determine beta dc at / c1 mA and V CE = 8 V. %3D e. How does the level of b ac and b dc compare in each region? f. Is the approximation beta dc = beta ac a valid one for this set of characteristics?

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Author:Robert L. Boylestad
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a. Using the characteristics of Fig. 3.24 , determine b ac at /c = 14 mA and V Ce= 3 V.
b. Determine beta dc at /c = 1 mA and V CE = 8 V.
c. Determine beta ac at /c = 14 mA and V CE = 3 V.
d. Determine beta dc at / c 1 mA and V cE = 8 V.
e. How does the level of b ac and b dc compare in each region?
f. Is the approximation beta dc = beta ac a valid one for this set of characteristics?
20 mA
Vertical
18 mA
per div
2 mA
80 A
16 mA
70 A
14 mA
Horizontal
60 A
per div
IV
12 mA
50 A
10 mA
40 A
8mA
Per Step
30 A
10 pA
6 mA
20 A
4 mA
Bor m
per div
200
10 HA
2 mA
OmA
oV IV 2V 3V 4V SV 6V 7V 8V 9V 10V
FIG. 3.24
Carve tracer response to 2N3904 npa transistor.
Transcribed Image Text:a. Using the characteristics of Fig. 3.24 , determine b ac at /c = 14 mA and V Ce= 3 V. b. Determine beta dc at /c = 1 mA and V CE = 8 V. c. Determine beta ac at /c = 14 mA and V CE = 3 V. d. Determine beta dc at / c 1 mA and V cE = 8 V. e. How does the level of b ac and b dc compare in each region? f. Is the approximation beta dc = beta ac a valid one for this set of characteristics? 20 mA Vertical 18 mA per div 2 mA 80 A 16 mA 70 A 14 mA Horizontal 60 A per div IV 12 mA 50 A 10 mA 40 A 8mA Per Step 30 A 10 pA 6 mA 20 A 4 mA Bor m per div 200 10 HA 2 mA OmA oV IV 2V 3V 4V SV 6V 7V 8V 9V 10V FIG. 3.24 Carve tracer response to 2N3904 npa transistor.
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