Creating Reverse Sawtooth Signal

[Givi621]

Hello, i have a 555 timer circuit that output a single pulses\ only on period, of Sawtooth signal when im pressing a button . what i want to do is to have a another circuit that can revesre those on period pulses. if some has a new circuit that generate a reverse sawtooth with one periode signals its also ok.
Thanks for help.

 

[AnalogKid]

Your description is not very clear. Please post your circuit so we can see what you mean.

Where are you located?

ak

 

[Givi621]

Thank you for your answer. im sorry that i wasnt clear. the width of the out put is 2.5ms and the duty cycle is 0.00049%.
the ciruit made by crutschow.