Electronics - Time Response of Reactive Circuits - Discussion

Discussion Forum : Time Response of Reactive Circuits - General Questions (Q.No. 1)
1.

What voltage will the capacitor charge up to in the given circuit for the single input pulse shown?

3.15 V
4.3 V
4.75 V
4.9 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
17 comments Page 1 of 2.

Syed Shakeeb said:   3 years ago
Vin = 5v.

t = 32.8 * 10^-6.
RC=16.4 * 10^-6.
VC=vin(1-e^-t/RC),
5 * (1 - e(-32.8 * 10-6 ÷ 16.4 *10-6)).
Answer = 4.3V.
(1)

Arun said:   1 decade ago
@Mehta is right. Given circuit is a low pass filter circuit.

So output voltage is:

Vo = Vin (1-e^(-t/RC)).

T = 32.8 us.

R = 82 k.

C = 200 PF.

Elkaanutil said:   4 years ago
1 trc = (1-e^-1) = 0.6321 or 63.21%,
2 trc = (1-e^-2) = 0.8647 or 86.47 %,
Thus,
n trc = (1-e^-n).

Asha said:   8 years ago
Thank you @Gaurav.

Kanha said:   8 years ago
(1-e^(-t/RC))=0.63 for t=RC and it is 0.86 for t = 2RC.

Seema said:   8 years ago
Yeah! Please explain about 1trc and 2trc calculation.

Prabhu said:   9 years ago
@Gaurav.

Please explain about the 1 trc and 2 Trc calculation.

Padma said:   9 years ago
Yeah! @Gaurav is absolutely right.

Gaurav said:   10 years ago
T constant = rc = 82 k x 200 pf = 16.4 micro sec.

Plus time = 32.8 micro sec.

Trc = 32.8/16.4 = 2.

1 Trc = 63.3%.

2 Trc = 86%.

So, output voltage = 5x(86/100) = 4.3 v.

Phaneendra said:   1 decade ago
f=1/RC
Toff=1/f
Ton+Toff=T;32.4+16.2=48.6
Ton/T=Von(drop)
beacause we hav calucalate voltge during on state .

V-Von=4.3v
5-0.66=4.3v


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