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Explain monostable timer circuit and design a monostable 555 timer circuit to produce an output pulse $10 \mathrm{sec}$ wide.
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Solution:

It has only one stable state. When a triggering pulse of less than $1 / 3 \mathrm{vcc}$ is applied to trigger pin the monostable.

The multivibrator will change its stale from low to high. The external capacitor connected to pin 6 will start charging exponentially through the RA resistor. …

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