Electronic Devices - Linear-Digital ICs - Discussion

Discussion Forum : Linear-Digital ICs - General Questions (Q.No. 35)
35.
Calculate the frequency of this circuit.

635 Hz
450 Hz
228 Hz
128 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Avijit sil said:   5 years ago
F=1.44/{(Ra+2*RB)*C} hz
=1.44/{(7.5+2*7.5)*10^3*0.5*10^-6} hz
=1.44 * 10^3/11.25 hz
= 128 hz.

G MAHENDRA said:   1 decade ago
F = 1/T= 1.44/((RA+RB*2)*C) = 128hz.

TL= 0.693*RB*C.

TH = 0.693*(RA+RB)*C.

D = Duty Cycle = (RA+RB)/(RA+2*RB) = 66.7%.

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