单项选择题
题图示稳压电路,稳压管V1与V2相同,其稳压值UZ=5.3V、正向压降0.7V,输出电压U0为()
A.1.4V B.4.6V C.5.3V D.6V
A.增大RL B.增大RC C.增大RB D.减小RB
A.5mA B.10mA C.12mA D.24mA