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Pulse and Digital Circuits by Manmadha Rao G., Rama Sudha K., Venkata Rao K.

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15.4 A MONOSTABLE MULTIVIBRATOR AS A DIVIDER

A monostable multivibrator can be used for synchronization with frequency division [see Fig. 15.9(a)] and the waveforms are shown in Fig. 15.9(b). Here, the positive pulse train is applied at B1 through a small capacitance from a low impedance source.

The positive pulse train applied at B1 gets quasi-differentiated as discussed earlier in the Section 15.3.4. The negative spikes at the trailing edge of the pulses are amplified and inverted and appear as the positive spikes at B2. As a result, positive spikes due to the second pulse will prematurely terminate the time period resulting in synchronization with the frequency division of 2:1. On the other hand, if the amplitude of the pulses is large enough, ...

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