i.e. sample time is 0.1secclose & open every 0.1secArduinoAnalog In4.94Vc(t)1.14.86Capacitor Discharge through Arduino (dt-0.1sec)33.44.695.544.64.6Y--0.0669x + 4.923556.54.4856.7.74.4.....710.54.234.5...825.73.219 Time (hrs) Cap Volts103.511123131015202514Time (hours)15Figure 252C=0.507UF The average capacitor discharge current in Figure 252 is a constantAssume a different film capacitorEx. 252.9.42 pA for a 0.507 uF film capacitor.C=0.3580 uF results in a different discharge current given byy=-0.08840x + 5.0. Calculate the discharge current (amps) for this differentcapacitor. If the Arduino was like a 10M Ohm voltmeter, the cap woulddischarge very quickly. Calculate the time (seconds) to discharge 98.2%,which is four time constants.tau=R*C.ans:2

Given the average capacitor discharge current is constant 9.42 pA for 0.507 μF film capacitor.…

Ex. 252. The average capacitor discharge current in Figure 252 is a constant 9.42 pA for a 0.507 uF film capacitor. Assume a different film capacitor C=0.3580 uF results in a different discharge current given by y=-0.08840x + 5.0. Calculate the discharge current (amps) for this different capacitor. If the Arduino was like a 10M Ohm voltmeter, the cap would discharge very quickly. Calculate the time (seconds) to discharge 98.2%, which is four time constants. tau=R*C. ans: 2

Ex. 252. The average capacitor discharge current in Figure 252 is a constant 9.42 pA for a 0.507 uF film capacitor. Assume a different film capacitor C=0.3580 uF results in a different discharge current given by y=-0.08840x + 5.0. Calculate the discharge current (amps) for this different capacitor. If the Arduino was like a 10M Ohm voltmeter, the cap would discharge very quickly. Calculate the time (seconds) to discharge 98.2%, which is four time constants. tau=R*C. ans: 2

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

i.e. sample time is 0.1sec
close & open every 0.1sec
Arduino
Analog In
4.94
Vc(t)
1.1
4.86
Capacitor Discharge through Arduino (dt-0.1sec)
3
3.4
4.69
5.5
4
4.6
4.6
Y--0.0669x + 4.9235
5
6.5
4.48
5
6.
7.7
4.4
.....
7
10.5
4.23
4.5
...
8
25.7
3.21
9 Time (hrs) Cap Volts
10
3.5
11
12
3
13
10
15
20
25
14
Time (hours)
15
Figure 252
C=0.507UF

The average capacitor discharge current in Figure 252 is a constant
Assume a different film capacitor
Ex. 252.
9.42 pA for a 0.507 uF film capacitor.
C=0.3580 uF results in a different discharge current given by
y=-0.08840x + 5.0. Calculate the discharge current (amps) for this different
capacitor. If the Arduino was like a 10M Ohm voltmeter, the cap would
discharge very quickly. Calculate the time (seconds) to discharge 98.2%,
which is four time constants.
tau=R*C.
ans:2

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