多路多档数字式交流恒流源电路的设计
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摘要
详细介绍了多路多档数字式交流恒流源电路的工作原理、电路设计以及控制策略,通过与现有恒流源技术的比较,该电路能够稳定产生多路多档恒定电流;并且该电路利用单片机控制,工作稳定且控制方便;4路调挡与4路选通电路能够分时复用同一高精度恒流源电路,既节省成本又能够消除系统误差;使用合理的程序算法,实现4路调挡与4路选通电路的协调控制。通过实验表明该电路具有上述优点,能够在电子测量领域广泛应用。
Introduced the working principle circuit design and control strategy of multiplexing multiple digital ac constant current source circuit,by comparing with the existing technology of constant current source,the circuit can generate multiplexing multiple stable constant current; and the circuit using single- chip microcomputer control,stable working and easy to control; 4 road block and 4 road called the road can reuse the same high precision constant current source circuit,which saves cost and can eliminate system error; the program algorithm is reasonable,achieving 4 shift and 4 road gate circuit coordination control. The experiments show that the circuit has the advantages mentioned above,can be widely used in electronic measurement field.
Introduced the working principle circuit design and control strategy of multiplexing multiple digital ac constant current source circuit,by comparing with the existing technology of constant current source,the circuit can generate multiplexing multiple stable constant current; and the circuit using single- chip microcomputer control,stable working and easy to control; 4 road block and 4 road called the road can reuse the same high precision constant current source circuit,which saves cost and can eliminate system error; the program algorithm is reasonable,achieving 4 shift and 4 road gate circuit coordination control. The experiments show that the circuit has the advantages mentioned above,can be widely used in electronic measurement field.
引文
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[2]李冬梅.大电流恒流源放电回路及其分析[J].中小企业管理与科技,2009(21).
[3]李宏生,万德钧.一种高精度恒流源的设计与分析[J].光学精密工程,1996年06期.
[4]刘伟,胡仁杰,王峥.基于AD9850芯片的信号发生器的研究[J].电工电气,2009(11):19-21.
[5]高学群.基于MSP430的数字电压表的设计与实现[J].企业导报,2011,(15):298-298.