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 Inductance of Circuit?
Inductance of Circuit calculator uses Inductance of Discharge Frequency = 1/(Capacitance of Discharge Frequency*(2*pi*Frequency of Discharge)^2) to calculate the Inductance of Discharge Frequency, The Inductance of circuit formula is defined as the equivalent inductance of the inductors associated with the sparking circuit of the EDM. Inductance of Discharge Frequency is denoted by Lf symbol.
How to calculate Inductance of Circuit using this online calculator? To use this online calculator for Inductance of Circuit, enter Capacitance of Discharge Frequency (Cdf) & Frequency of Discharge (fd) and hit the calculate button. Here is how the Inductance of Circuit calculation can be explained with given input values -> 5.731782 = 1/(5.02*(2*pi*0.0297)^2).