# simulating a lightning generator

I didn't have much input with the original post, so I'm taking a different approach now. How do I model a transient/lightning source whose output looks like the shown waveform when connected to the load (a filter that contains TVS diodes/transorbs that clamp the voltage)

Additional info: As seen in the output waveform of an actual transient generator, the output voltage hits plateau, stays constant while the current rises and falls in a parabolic path. enter image description here![enter image description here][1]![enter image description here][2]

• Is this to a particular specification? I have to deal with 6kV pulses with 1.2/20 us voltage and the out put impedence of 2 ohm's google.co.uk/… – Spoon Jun 11 '14 at 19:50
• Oops its a 1.2/50 us wave form.. but that is unloaded and represents lightning in an industrial enviroment. – Spoon Jun 12 '14 at 1:08

$I_{C_2}$ always must = $C\cdot \dfrac{dv}{dt}$