Find the approximate frequency of output waveform of a monostable multivibrator given that RC = 20×10^-3 and feedback factor = 0.3.(a) 200Hz(b) 142Hz(c) 233Hz(d) Can’t be found out without supply voltage valueThis question was addressed to me in final exam.The origin of the question is Different Types of Multivibrators topic in chapter Multivibrators of Analog Circuits

Find the approximate frequency of output waveform of a monostable mult

1.	Find the approximate frequency of output waveform of a monostable multivibrator given that RC = 20×10^-3 and feedback factor = 0.3.(a) 200Hz(b) 142Hz(c) 233Hz(d) Can’t be found out without supply voltage valueThis question was addressed to me in final exam.The origin of the question is Different Types of Multivibrators topic in chapter Multivibrators of Analog Circuits
Answer» RIGHT CHOICE is (b) 142Hz The best explanation: T = RCln(1/1-β) T = 20×10^-3 x ln(1/0.7) = 20×0.35×10^-3 = 7ms f = 0.142 KHZ = 142 Hz.

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