Pulse Generator for EDM Drill Machine

The current invention is a pulse generator for electro-erosion machining that can deliver controlled voltage pulses between an electrode tool and an electrode workpiece. These pulses have a sharp vertical leading edge over a broad frequency range and offer the highest energy efficiency. The pulse generator of the invention includes a DC power supply, an electromagnetic energy storage element, and a first circuit make and break element, such as a switch, connected between one of the DC power supply terminals and one of the terminals of the electromagnetic energy storage device. This device is connected across the electrode tool-workpiece machining gap. The first terminal of the electromagnetic storage element is connected to the other terminal of the power supply via a first unidirectional element.