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

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8.3 CALCULATION OF THE VOLTAGES TO PLOT THE WAVEFORMS

To plot the waveforms at the two collectors and the two bases, the voltages in the circuit are to be calculated; when the multivibrator is in the stable state, when it is driven into the quasi-stable state and finally when it returns to the initial stable state. Consider the collector-coupled monostable multivibrator as shown in Fig. 8.1.

8.3.1 In the Stable State (t < 0)

Here, the assumption is that Q2 is ON and in saturation while Q1 is OFF. In this situation, the need is to verify whether Q2 is really in saturation or not and whether Q1 is in the OFF state.

To Verify that Q2 is in Saturation. For this we need to calculate IC2 and IB2 and then verify whether IB2 is significantly larger than ...

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