三极管开关饱和度计算器
Rc (Collector resistor)集电极电阻 (KΩ) 
VP (Positive Voltage)正电压 (V)
Beta(min) (Current gain)放大系数,电流增益
VBE (Base to emitter drop)基极-发射极电压降 (V)

Rb (Base resistor)基极电阻 (KΩ)