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Given the following circuit. The supply voltage being applied is ±15V. The diode cut-in voltage is 0.7V. Find the maximum value of R such that circuit can behave as a monostable multivibrator.

Given the following circuit. The supply voltage being applied is ±15V. The diode cut-in voltage is 0.7V. Find the maximum value of R such that circuit can behave as a monostable multivibrator. Correct Answer 612.8kΩ

The condition to be followed is βVSat > VY. β = R1/R1+R2 = 30k/30k+R Thus (30k/30k+R). 15 > 0.7 450k/30k + R > 0.7 30k+R < 642.85k R < 612.8kΩ.

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