pcb布线设计规则.pdf
PCB design is no longer a matter of placing tracks to create connections. High speed logic combined with smaller and more complex packaging technologi...
PCB design is no longer a matter of placing tracks to create connections. High speed logic combined with smaller and more complex packaging technologi...
高速數字电路板原理,设计理论。 黑魔书[Johnson & Graham]1_High-speed Digital Design 中文版...
并网型风力发电系统有恒速恒频(Constant Speed Constant Frequency,简称CSCF)和变速恒频(VariableSpeed Constant Frequency,简称VSC...
·Abstract: This paper presents a study of PMSM under short circuit in turns at different speed and torque values.PMSM in a healthy state and under fau...
针对在工程实践中很多场合都需要对转速这一参数进行精准测量的目的,采用以STC89C52芯片为核心,结合转动系统、光电传感器、显示模块等构成光电传感器转速测量系统,实现对电机转速的测量。通过测试表明该系统具有结构简单、所耗成本低,测量精度高、稳定可靠等优点,具有广阔的应用前景。For the purp...