在串联型晶体管稳压电路中，集电极电阻有内部电源和外部电源两种供电方式。
There are two kinds of supply modes of collecting electrode resistance (inner and outer) in the voltage-steadied circuit in which series connection transistor is used.
控制器驱动外部NPN晶体管的射极，并与变压器串联构成反激式拓扑，系统通过变压器和光耦实现离线式的要求。
It drives the emitter of an external NPN transistor, and series with transformer to consist a flyback topology. The system is offline through the use of transformers and optocoupler transistor.
第一和第二电阻器串联在所述电极和第二晶体管之间。
First and second resistors are coupled in series between the electrode and the second transistor.
第一和第二电阻器串联在所述电极和第二晶体管之间。
First and second resistors are coupled in series between the electrode and the second transistor.
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