I read about the low-pass filter.. what i understand is, low-pass filter allow low-frequency signal to pass thru, but cut out the higher frequency signal.
But the thing that i'm trying to do is, as shown in the picture.
I'm trying to build a circuit that can do such things.. can somebody give some idea?
If you use a retriggerable monostable multivibrator and you select
the RC-time slightly longer than the period of one incoming pulse
you'll get one output pulse which will be slightly longer than the
incoming pulse train.