In the figure shown, the n-p-n transistor acts as a switch. 5 V 4.8 k2 V_1) 12 k2 2 V V(1) r (in sec) O V For the input V (1) as shown in the figure, the transistor switches between the cutoff and saturation regions of operation, when T is large. Assume collector-to-emitter voltage at saturation VCE (sar) = 0.2 V and base-to-emitter %3D voltage VRE = 0.7 V. The minimum ВЕ
In the figure shown, the n-p-n transistor acts as a switch. 5 V 4.8 k2 V_1) 12 k2 2 V V(1) r (in sec) O V For the input V (1) as shown in the figure, the transistor switches between the cutoff and saturation regions of operation, when T is large. Assume collector-to-emitter voltage at saturation VCE (sar) = 0.2 V and base-to-emitter %3D voltage VRE = 0.7 V. The minimum ВЕ
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Transcribed Image Text:In the figure shown, the n-p-n transistor
acts as a switch.
4.8 k2
12 k2
ww
2 V
V(1)
r (in sec)
OV
For the input V (t) as shown in the
figure, the transistor switches between
the cutoff and saturation regions of
operation, when T is large. Assume
collector-to-emitter voltage at saturation
VCe(sar) = 0.2 V
and
base-to-emitter
%3D
voltage VRE = 0.7 V. The minimum
value of the common-base current gain
(a) of the transistor for the switching
should be
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