POWER SOURCE UNIT FOR DISCHARGE SURFACE TREATMENT

摘要

A power source unit for discharge surface treatment which uses a dust electrode as a discharge electrode to generate pulse-like discharge between the discharge electrode and a work to thereby form a film comprising an electrode material or a material obtained by the reaction of the electrode material caused by the discharge energy on the surface of the work, wherein pulse generation is prevented for long by: (1) forcibly breaking the output of an oscillator by current breaking means when a discharge voltage detected by voltage detection means is lowered below a discharge detection voltage so preset as to have a value slightly lower than a power-supply voltage; (2) connecting a capacitor in parallel with an oscillation circuit of the oscillator; (3) limiting a discharge time of one discharge operation by timer control.