My application is intended towards drilling holes by the help of Spark (it is known as Electric Discharge Machining). I am using DC Power Supply of 300V, 10A range and the -ve terminal of which I am switching using MOSFET circuit, which then gets connected to the tool and workpiece is connected to +ve terminal of a power supply. As soon as we bring the two electrodes (tool & workpiece) close to each other, sparks occurs. So I need to sense the current and voltage that changes during spark / short circuit, using some Sensing Modules having voltage and current range we have.
Kindly suggest the better solution.
Also i need to buy better Switching MOSFET Modules which can switch high DC Voltages upto 300V upto 1 microsecond or even better.
Also, Protection Circuits for this application, to prevent high flow of current during Short-circuiting and Arcing, which may protect other electronic elements from getting damaged; also needs to be placed.