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 Spark Discharge Voltage at Maximum Spark Current?
Spark Discharge Voltage at Maximum Spark Current calculator uses Discharge Voltage of Arc = Voltage of Power Supply-Resistance of Criterion Arc*Maximum Current in Sparking Circuit to calculate the Discharge Voltage of Arc, The Spark discharge voltage at maximum spark current formula is defined as the voltage at any given time present across the discharging circuit. Discharge Voltage of Arc is denoted by Varc symbol.
How to calculate Spark Discharge Voltage at Maximum Spark Current using this online calculator? To use this online calculator for Spark Discharge Voltage at Maximum Spark Current, enter Voltage of Power Supply (V0), Resistance of Criterion Arc (Rarc) & Maximum Current in Sparking Circuit (idmax) and hit the calculate button. Here is how the Spark Discharge Voltage at Maximum Spark Current calculation can be explained with given input values -> 1.068 = 10-0.29*30.8.