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 Power Supply for Maintaining Maximum Sparking Current?
Power Supply for Maintaining Maximum Sparking Current calculator uses Voltage of Power Supply = Discharge Voltage of Arc+Maximum Current in Sparking Circuit*Resistance of Criterion Arc to calculate the Voltage of Power Supply, The Power supply for maintaining maximum sparking current formula is defined as the voltage of power supply used to charge the relaxation circuit used to provide a spark in unconventional EDM. Voltage of Power Supply is denoted by V0 symbol.
How to calculate Power Supply for Maintaining Maximum Sparking Current using this online calculator? To use this online calculator for Power Supply for Maintaining Maximum Sparking Current, enter Discharge Voltage of Arc (Varc), Maximum Current in Sparking Circuit (idmax) & Resistance of Criterion Arc (Rarc) and hit the calculate button. Here is how the Power Supply for Maintaining Maximum Sparking Current calculation can be explained with given input values -> 9.683 = 1.068+30.8*0.29.