| 摘要 |
A power supply for electro-erosion machine includes a capacitive network in series connected in the current loop for limiting or controlling the current flow through the gap formed by electrode and work-piece a switching device is adapted to change the direction of charging and discharging current of the capacitive network, a driving circuit (firing circuit) is adapted to drive the switching device on and off so as to control current flow through the capacitive network. This lower resistance circuit eliminates huge power loss and reduces switching stress of the switching device. The electro-erosion ON-OFF time signal and the current-pattern control along with the circuit, constitutes a compact, low electrode wear and low electromagnetic noise electro-erosion machine power supply.
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