how to drive capacitance with tyristor or triac

[mesuthh]

Hello People;
I am trying drive 25uf capacitance with a optocoupler and triac. I have tried so many triacs and huge heatshinks, but always triacs goes fire because the high temperature on triac.
is there any advice
thanks from now on
regards

 

[tcmtech]

Why are you trying to drive a capacitive load? What purpose?

 

[BrownOut]

You probably don't have any resistance to limit the current into your capacitor. Always limit capacitor current with a suitable resistor.

 

[Mr RB]

Probably oine of those silly "rail guns" where they dump a lot of energy from a high voltage cap through the triac into what is basically a dead short load, that may or may not make something move.

I think "triacs goes fire" is a common symptom.

 

[Jaguarjoe]

Must be some awfully high voltage to get remarkable energy from 25uf.
The Navy's railgun is 32MJ, they want to double that to 64 and eliminate cruise missles.