Questions
A change of 8.0mA in the emitter current brings a change of 7.9mA in the collector current . Find the value .
detailed solution
Correct option is A
We have, IE=IB+ICΔIE=ΔIB+ΔICFrom the question, when ΔIE=8.0 mA,ΔIC=7.9 mAThus, ΔIB=8.0 mA−7.9 mA=0.1 mA β=IcIB=ΔICΔIB =7.9 mA0.1 mA=79Talk to our academic expert!
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Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of 10 and the second has a voltage gain of 20. If the input signal is 0.01 volt, calculate the output ac signal.
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