Electric heating – Metal heating – Cutting or disintegrating
Patent
1993-11-15
1996-07-23
Nguyen, Matthew V.
Electric heating
Metal heating
Cutting or disintegrating
323282, B23H 100, G05F 140
Patent
active
055391788
ABSTRACT:
In a power supply apparatus of an electrical discharge machine, a power supply high in efficiency and small in current ripple is provided to achieve a power supply reduced in size and price. In addition, a switching power supply system is used jointly to generate an optional waveform. A first switching device is switched on/off in an optional cycle under the control of a current command value signal corresponding to the waveform shape of a current pulse to be supplied to a machining gap, whereby an optional shape of current pulse is supplied to the machining gap and a current component which compensates for a current ripple generated by said switching at the time of supplying said current is superimposed on said optional shape of current pulse and is supplied to the machining gap.
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Kinbara Yoshihide
Ogawa Hajime
Taneda Atsushi
Uemoto Kazuhiko
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Matthew V.
Turner Richard C.
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