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 Time Constant for Charging Circuit of EDM?
Time Constant for Charging Circuit of EDM calculator uses Time Constant for Charging Voltage = Resistance of the Charging Voltage*Capacitance of Charging Voltage to calculate the Time Constant for Charging Voltage, The Time constant for charging circuit of EDM formula is defined as the product of resistance of charging circuit to the capacitance of circuit. Time Constant for Charging Voltage is denoted by 𝜏cv symbol.
How to calculate Time Constant for Charging Circuit of EDM using this online calculator? To use this online calculator for Time Constant for Charging Circuit of EDM, enter Resistance of the Charging Voltage (Rcv) & Capacitance of Charging Voltage (Cv) and hit the calculate button. Here is how the Time Constant for Charging Circuit of EDM calculation can be explained with given input values -> 9 = 1.8*5.