可控硅预稳压电路降低串联稳压电路中的调整管管耗，使调整管两端的电压差始终是设定值。
Regulated power supply by SCR can reduce the consume energy of transistor and make the voltage between C and E of transistor keep invariable.
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.
内容摘要：首先进行方案论证，设计合适的方案，有两种方案可供选择，方案一：串联式直流稳压电源，方案二：集成稳压电路。
Summary: First of all, the program argues that the design of appropriate programs, there are two options, the program I: Series DC Power Supply, Option II: Integrated circuit voltage regulator.
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