Abstract
This paper describes a method to increase the discharge energy in micro EDM with electrostatic induction feeding method (EIFM) by exploiting the resonance in circuit. Higher discharge energy per pulse can be achieved when machining is done at resonant frequency, f_r of the circuit due to minimum impedance. In this paper, explanation on machining at f_r using EIFM with controlled pulse train method is given. Method to perform non-contact electrical feeding using a feeding electrode is described. As a result, machining at f_r of the circuit gives higher discharge energy and better discharge continuity within the controlled pulse train duration.
