According to the requirements of coil power supply, the paper designs one kind of constant current source based on the switching power supply.
根据线圈供电要求，本论文设计了一种基于开关技术的恒流电源。
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；
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