i have given the output pulse train of an astable multivibrator to IC 555( operated in monostable mode)..My aim is to generate a linear ramp signal. I had connected a pnp transistor whose collector is given to pin6 which is further connected to pin 7.. then i connected it to ground with a capacitor of 22 micro in between.. now from the output pin 3.. i am getting a step output with very high delay time.. where did i go wrong?