Electric arc simulator

[AshwinNambiar]

I want to design an electric arc simulator(electronic load) .A sub circuit of this involves the design of a trans conductance amplifier with an IGBT. I do not want an OP-Amp based trans conductance based circuit,i'm very specific on using an IGBT for the transconductance circuit because i require a current of the order of 10 Amps.

The arc simulator circuit essentially consists of multiplier ,integrator and the trans conductance circuit -i.e with the voltage as input i will require output as current.This output is to be given back to the multiplier,which then multiplies the final voltage and current.
MY AIM is to design a circuit which gives me static V-I characteristics with negative resistance slope.
Please assist me on the same.Looking forward for valuable suggestions on how to go about on the same.

 

[D.A.(Tony)Stewart]

You must give some constraints for input and outputs.

V,I Z,ESR or gm, Ac,DC, load di/dt and arc V, f , gap etc.

All transistors have negative VI slope on CE or CD designs.