中国大学MOOC: A BJT has measured dc current values of IB = 0.1 mA and IC = 8.0 mA. When IB is varied by 100 μA, IC changes by 10 mA. What is the value of the βdc for this device?
举一反三
- A BJT has measured dc current values of IB = 0.1 mA and IC = 8.0 mA. When IB is varied by 100 μA, IC changes by 10 mA. What is the value of the βdc for this device? A: 80 B: 10 C: 100 D: 800
- A BJT has measured dc current values of [img=17x17]17d6063b254f8f4.png[/img]= 0.1 mA and [img=16x17]17d6063b32c6cb0.png[/img]= 8.0 mA. When [img=17x17]17d6063b254f8f4.png[/img] is varied by 100 μA, [img=16x17]17d6063b32c6cb0.png[/img] changes by 10 mA. What is the value of the [img=21x21]17d6063b450ad71.png[/img] for this device?（ ） A: 10 B: 100 C: 80 D: 800
- 测得BJT IB=30 μ A 时，Ic=2.4 mA；Ib=40μ A时, Ic=3 mA,则该管的交流电流放大系数β__
- 测得某三极管当IB=20 mA时，IC=2 mA；当IB=60 mA时，IC=5.4 mA。求其b、ICEO及ICBO的值。
- 若三极管b=99，IE=5mA，则IC=（ ）mA，IB=（ ）mA