How the spark is produced in Electric Discharge Machining ?
A typical circuit used for supplying the power to an EDM machine is named as the relaxation circuit. The circuit consists of a DC power source, which charges the capacitor ‘C’ across a resistance ‘Rc’. Initially when the capacitor is in the uncharged condition, when the power supply is on with a voltage of Vo, a heavy current, ic, will flow in the circuit as shown to charge the capacitor. The relaxation circuit as explained above was used in the early EDM machines. They are limited to the low material removal rates for fine finish, which limits its application. This can be explained from the fact that the time spent on charging the capacitor is quite large during which time, no machining can actually take place. Thus the material removal rates are low.
How to Calculate Capacitance of Circuit from Max Spark Current?
Capacitance of Circuit from Max Spark Current calculator uses Capacitance of Maximum Spark = Inductance of Maximum Spark/((Charging Voltage/Maximum Current)^2) to calculate the Capacitance of Maximum Spark, Capacitance of circuit from max spark current formula is defined as the equivalent capacitance of all the capacitors connected in the relaxation circuit of EDM to produce spark. Capacitance of Maximum Spark is denoted by Cs symbol.
How to calculate Capacitance of Circuit from Max Spark Current using this online calculator? To use this online calculator for Capacitance of Circuit from Max Spark Current, enter Inductance of Maximum Spark (Lmaxspark), Charging Voltage (Vmaxspark) & Maximum Current (imaxspark) and hit the calculate button. Here is how the Capacitance of Circuit from Max Spark Current calculation can be explained with given input values -> 35.2714 = 5.69/((2.01/5)^2).