Digital Electronics - Multivibrators and 555 Timer - Discussion
Discussion Forum : Multivibrators and 555 Timer - General Questions (Q.No. 4)
4.
A 22-k
resistor and a 0.02-
F capacitor are connected in series to a 5-V source. How long will it take the capacitor to charge to 3.4 V?
resistor and a 0.02-F capacitor are connected in series to a 5-V source. How long will it take the capacitor to charge to 3.4 V?Discussion:
13 comments Page 2 of 2.
Aimal said:
1 decade ago
t = RC*ln(Vc/Vs).
Uday Pratap Singh said:
9 years ago
Voltage across capacitor is,
Vc = V (1 - e^(-t/RC)).
From question Vc = 3.4V, V = 5V, RC = 0.44 x 10^-3.
Putting these values in above equation.
3.4 = 5 (1 - e^(-t/(0.44 * 10^(-3)))).
After solving this equation, t = 0.501 ms.
Vc = V (1 - e^(-t/RC)).
From question Vc = 3.4V, V = 5V, RC = 0.44 x 10^-3.
Putting these values in above equation.
3.4 = 5 (1 - e^(-t/(0.44 * 10^(-3)))).
After solving this equation, t = 0.501 ms.
(1)
Harini said:
6 years ago
How this problem is solved. Are said a formula for this problem.
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