The logic functions of MSI counter 74161 was analysed. It could be taken as a universal sequential module to realize any synchronous sequential circuits.
分析了MSI计数器74161的逻辑功能，它作为通用的时序部件可以实现任意同步时序电路。
Meanwhile, the PWM generated methods of a universal DC voltage source inverter are applied to the cycloconverter after the synchronous process.
同时也提出将用于通用型直流电压源逆变器的PWM波生成方法，经过同步处理后，可以应用到该交-交变频器中。
Meanwhile, the PWM generated methods of a universal DC voltage source inverter are applied to the cycloconverter after the synchronous process.
同时也提出将用于通用型直流电压源逆变器的PWM波生成方法，经过同步处理后，可以应用到该交-交变频器中。
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