Is there is any method to control the spark profile between the electrodes?

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Joachim Pimiskern

I suppose you mean by electrical means.

The air could be pre-ionized. This

could be done with additional needle

electrodes. A laser could also be used

to ionize the air, or graphite powder

in the air might ease discharge.

Regards,

Joachim

Sarabjeet Singh Sidhu

In EDM process can we control the profile of spark

Xiaobing Feng

I think the questions needs clarifying. What kind of profile do you refer to? Do you mean temporal or physical profile?

As Amin Ezazi explained, transistor-type pulse generator can produce controllable pulses with controlled electrical profile. As far as I know, only square waves have been attempted.

As for physical shape, that really depends on gap conditions.