Capacitor-type pulse generator for electrical discharge machining, especially for wire-cutting EDM
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United States of America
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-
Feb 7, 1989
Grant Date -
N/A
app pub date -
Apr 10, 1986
filing date -
Feb 26, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A capacitor-type pulse generator is provided for wire-cutting EDM. The generator includes a capacitor connected on one hand to a DC source in series with a charging switch and on the other hand to the EDM gap in series with a discharging switch. A first sensing circuit turns the discharging switch into conduction when the charging voltage on the capacitor reaches a predetermined level. The charging switch is normally in its conductive state and is turned into its nonconductive state when a second sensing circuit senses that the EDM gap voltage exceeds a preselected value. In a modified generator, parallel-connected discharging switches are triggered in sequence when the capacitor voltage reaches the predetermined level.
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