J. Liu, J. Zhao, and W. Zhao, Special machining, pp.7-61, 2004.

C. Gao, X. Song, and Z. Liu, Research on a Micro Energy Pulse Power Supply for Micro-EDM [J], Aviation Precision Manufacturing Technology, pp.9-11, 1997.

F. Han, Y. Yamada, T. Kawakami, and M. Kunieda, Experimental Attempts of Sub- Micrometer Order Size Machining Using Micro-EDM.Precision Engineering, pp.30123-131, 2005.

Y. Liao and R. Lu, CPLD digital circuit design, 2001.

Z. Xue, Application of CPLD in pulse power of EDM, pp.20-21