发布日期 ： 2019-11-06 01:45:03 UTC
分类 ： Electronic
The transistor goes into saturation or drives an electronic switch. Therefore calculating parameters is important.
The base current must be Ib = Ic / Beta. Transistors have different gains, so we have to use the lowest value of the beta to ensure saturation.
Rb= (VP-V<sub>BE</sub>)/Ib= (VP-V<sub>BE</sub>) * Magnification factor /Ic= (VP-V<sub>BE</sub>) * Magnification factor * Rc/VP
Rc=1KΩ, VP=100V, amplification factor=150, V<sub>BE</sub>=0.6
Rb= (VP-V<sub>BE</sub>)/Ib= (VP-V<sub>BE</sub>) * Magnification factor /Ic= (VP-V<sub>BE</sub>) * Magnification factor * Rc/VP=149.1
Rc refers to the collector resistance; VP refers to the positive voltage; Beta<sub>(min)</sub> refers to the amplification factor, current gain; V<sub>BE</sub> refers to the base-emitter voltage drop; Rb refers to the base resistance