The overall design method of the power supply is put forward, constant-current source circuit and AC source circuit are developed separately;
提出了功放系统的整体设计思路，分别设计了恒流源电路与交流放大电路；
From the stability formula of the base circuit, the stability expression within constant current source and assistant power is discussed.
从基本电路的稳定度公式出发，讨论了采用恒流源负载和辅助电源的稳定度表达式。
The design of the constant current source in two-wire transmitter and the integrated transmitter circuit are analysed.
分析说明了二线制变送器的恒流源设计及变送器的整机电路。
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