Patent ID: 6472630
Filing Date: 2002-10-29
Classification: B23H

Abstract:
An electrical discharge power supply modular device for an electrical discharge machine, comprising:a discharge signal generator capable of generating a discharge power supply control signal; at least one discharge power supply motherboard having a plurality of coupling devices for discharge power supply module boards and a plurality of discharge circuit connectors; a plurality of discharge power supply module boards plugged in said discharge power supply motherboard and disposed on respective ones of said plurality of coupling devices, such that the discharge power supply module boards are connected to a plurality of corresponding discharge power supply circuits through the discharge circuit connectors for flexibly building a multistage discharge power supply; and a discharge power supply control signal bus for forwarding the discharge power supply control signal generated by said discharge signal generator to a specified discharge power supply module board and providing discharge pulses to said discharge power supply circuits for producing a discharge current; wherein each discharge power supply module board comprises: a photocoupler for receiving the discharge power supply control signal; a driving stage for receiving a converted output signal derived from the received discharge power control signal; a post-stage switching circuit driven by the driving circuit; and a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) for joining with the discharge power supply circuit to discharge pulses.