Pulse Stretcher

This application of monostable multivibrator makes use of the fact that the output pulse width (timing interval) of it is of longer duration than the negative pulse width of the input trigger. As such the output pulse width of MMV can be viewed as a stretched version of narrow input pulse, hence the name Pulse Stretcher. Often, narrow-pulse width signals are not suitable for driving an LED display, mainly because of their very narrow pulse widths. In other words, the LED may be flashing but is not visible to the eye because its ON time is infinitesimally small compared to its OFF time. The following circuit can be used to remedy this problem.

 Components & parts: 

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