a suggestion to the original poster. Posting a request for a "firing" circuit by some one with their location as "Pakistan" is probably going to get scruitiny from unexpected quarters.
You probably want to try this again with more detail...
I expect there would be many local experts on firing circuits in that area. Pretty sure they aren't the ones with the backpacks or cars we see in the news.
I think what your looking for is how to connect an SCR up as a firing circuit
say for a strob light, or as I recall they used to hook them up to stereo outputs
to create a light organ. Do a search for strob light circuits.