mobile studio activity 7 report

8/9/2019 Mobile Studio Activity 7 Report

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Mobile Studio Activity #7 Adam Steinberger Electric Circuits Section 2

1

Introduction

RL and RC Filters are first order linear circuits that respond to alternating current signals. The

response of these filters to different frequencies depends on the inductance/capacitance and resistanceused in the circuit. At certain determinable frequencies, the filter will attenuate the signal. These are the

filters cutoff frequencies.

Procedure

The protoboard configuration for this lab is show to the left. The blue

cylindrical device shown is a 100mH inductor. The Mobile Studio Desktop software is

used to take voltage readings across the 1k resistor and the 100mH inductor at 100Hz,

1kHz and 10kHz, and then the two devices are switched around and readings are taken

again. The same procedure is carried out for a 22mH inductor and a 1mH inductor.

Afterwards, a 100F is connected in series with a 1k resistor. Voltage readings are

taken, and then the two are swapped. Repeat this for a 1F and a 0.1F capacitor. All

readings are taken for both sinusoidal and square wave responses.

Analysis

RC and RL Filters respond to alternating current at different frequencies in different ways

depending on whether a capacitor or an inductor is used. Either way, the resistor and inductor/capacitor

both have impedance that acts in AC circuits just like resistance does in DC circuits. The voltage across

the resistor is the AC version of a DC voltage divider, for which impedance is used instead. The same is

true for the capacitor or inductor. Smaller capacitors will respond with larger voltage AC signals. The

opposite is true for inductors. Also, only certain frequency signals can make it through RC and RL Filters.

For RL circuits, the cutoff frequency is =

2, and any frequency lower than this will not pass through

the filter. The cutoff frequency for RC circuits is =1

2, and any frequency higher than this will not

pass through the filter.

ConclusionFirst order transient filters can be used in alternating current circuits to filter out specific

frequencies from signals. RL and RC Filters make good examples of high-pass and low-pass filters. They

also can be used to change input signals to different desirable peak to peak output voltages.


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Application

1. Varying the capacitor in an RC Filter while the resistor is kept at 1k will change the peak to

peak voltage of the resistor and capacitor responses. Decreasing capacitance will result in asmaller peak to peak voltage across the resistor. This also results in larger peak to peak voltages

across the capacitor. This is because voltage over a capacitor, = 0 +1

0

, is

inversely proportional to capacitance.

Capacitance (F) VR (mV) VC (mV)

100 498 0.690

1 479 79.7

0.1 263 411

2. Varying the inductor in an RL Filter while the resistor is kept at 1k will change the peak to peakvoltage of the resistor and inductor responses. Decreasing inductance will result in a larger peak

to peak voltage across the resistor. This also results in smaller peak to peak voltages across the

inductor. This is because voltage over an inductor, =

, is directly proportional to

inductance.

Inductance (mH) VR (mV) VL (mV)

100 414 382

22 482 67.5

1 495 3.15

3. Switching the location of the inductor/capacitor and the resistor in an RC or RL Filter doesnt

change the AC frequency response of the circuit. This is because the impedance of the inductor

or capacitor in both configurations of the filter is the same.

4. Connecting a Non-Inverting OpAmp to vL in an RC low-pass filter circuit will amplify the capacitor

voltage according to the gain of the OpAmp network. If the gain is 2, the s-Domain output of the

OpAmp network should be =2

+1 .

=

=1

=

+

=

+

=1

+ 1 =

+ 1

= 2

=2

+ 1


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3

5. RL Filters act as high-pass filters while RC Filters act as low-pass filters. High-pass filters reject

frequencies lower than the cutoff frequency, and low-pass filters reject frequencies higher than

the cutoff frequency. At the cutoff frequency, the gain of the circuit will be approximately 1 2 .

Data

Table 1 - Effective Time Constants for RL and RC Filters

Frequency

(kHz)

Capacitance

/Inductance

Experimental

(s)

Theoretical

(s)

1 100mH 92.4 110

1 22mH 18.2 25.3

10 1mH 1.47 1.12

1 100F 98.1 --

0.1 1F 988 1210

0.1 0.1F 121 227

Table 2 - Cutoff Frequencies for RL and RC Filters

Capacitance

/Inductance

Cutoff Frequency

(kHz)

100mH 1.592

22mH 7.234

1mH 159.2

100F 0.001592

1F 0.1592

0.1F 1.592

0

R1

1k

V1

FREQ = 1k

VAMPL = 1

VOFF = 0

L1

100mH

1

2

0

V1

FREQ = 1k

VAMPL = 1

VOFF = 0 R1

1k

L1

100mH

12

0

R1

1k

V1

FREQ = 1k

VAMPL = 1

VOFF = 0 C1

100uF

0

V1

FREQ = 1k

VAMPL = 1

VOFF = 0 R1

1k

C1

100uF


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4

Figure 1 - Mobile Studio: 1k/100mH RL Filter at 100Hz

Figure 2 - Mobile Studio: 100mH/1k LR Filter at 100Hz

Figure 3 - Mobile Studio: 1k/100mH RL Filter at 1kHz

Figure 4 - Mobile Studio: 100mH/1k LR Filter at 1kHz




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Figure 19 - Mobile Studio: Effective time constant of 100mH RL Filter at 1kHz

Figure 20 - Mobile Studio: Effective time constant of 100mH LR Filter at 1kHz

Figure 21 - Mobile Studio: Effective time constant of 22mH RL Filter at 1kHz


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Figure 22 - Mobile Studio: Effective time constant of 22mH LR Filter at 1kHz

Figure 23 - Mobile Studio: Effective time constant for 1mH RL Filter at 10kHz

Figure 24 - Mobile Studio: Effective time constant for 1mH LR Filter at 10kHz

Figure 25 - Mobile Studio: Cutoff freq 1.58kHz for 100mH/1k RC Filter


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Figure 26 - Mobile Studio: Cutoff freq 4.477kHz for 1k/100mH RL Filter

Figure 27 - Mobile Studio: 1k/100F RC Filter at 100Hz

Figure 28 - Mobile Studio: 100F/1k CR Filter at 100Hz

Figure 29 - Mobile Studio: 1k/100F RC Filter at 1kHz

Figure 30 - Mobile Studio: 100F/1k CR Filter at 1kHz


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Figure 33 - Mobile Studio: 1k/1F RC Filter at 100Hz

Figure 34 - Mobile Studio: 1F/1k CR Filter at 100Hz



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Figure 39 - Mobile Studio: 1k/0.1F RC Filter at 100Hz

Figure 40 - Mobile Studio: 0.1F/1k CR Filter at 100Hz


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Figure 41 - Mobile Studio: 1k/0.1F RC Filter at 1kHz

Figure 42 - Mobile Studio: 0.1F/1k CR Filter at 1kHz

Figure 43 - Mobile Studio: 1k/0.1F RC Filter at 10kHz

Figure 44 - Mobile Studio: 0.1F/1k CR Filter at 10kHz


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Figure 45 - Mobile Studio: Effective time constant of 100F RC Filter at 1kHz

Figure 46 - Mobile Studio: Effective time constant of 100F CR Filter at 1kHz

Figure 47 - Mobile Studio: Effective time constant for 1F RC Filter at 100Hz

Figure 48 - Mobile Studio: Effective time constant for 1F CR Filter at 100Hz


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Figure 49 - Mobile Studio: Effective time constant for 0.1F RC Filter at 100Hz

Figure 50 - Mobile Studio: Effective time constant for 0.1F CR Filter at 100Hz

Figure 51 - PSPICE Simulation: Voltage across Potentiometer in RL or LR Filter with 100mH Inductor

Time0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms 2.2ms 2.4ms 2.6ms 2.8ms 3.0ms

V(R1:1,L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

R=1k

R=500

R=100

(1.8567ms, -207.372mV)

(1.3168ms, 206.216mV)

(836.785s, -208.415mV)

(356.804s, 210.390mV)

(1.9167ms, -151.047mV)

(1.3768ms, 151.911mV)

(896.782s, -151.327mV)

(356.804s, 168.957mV)

(1.9767ms, -33.049mV)

(1.4968ms, 46.628mV)

(956.780s, -23.348mV)

(476.799s, 62.236mV)


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Figure 52 - PSPICE Simulation: Voltage across 100mH Inductor in RL or LR Filter with Potentiometer



V(V1:+,L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.7862ms, -242.300mV)

(1.2462ms, 240.019mV)

(766.226s, -243.076mV)

(286.245s, 242.292mV)

(1.7862ms, -237.713mV)

(1.3062ms, 237.217mV)

(766.226s, -234.468mV)

(286.245s, 237.759mV)

(1.9062ms, -144.920mV)

(1.4262ms, 143.409mV)

(886.221s, -142.290mV)

(406.240s, 163.532mV)

R=1k

R=500

R=100


V(L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.6168ms, -130.740mV)

(1.0768ms, 132.091mV)

(596.795s, -132.713mV)

(116.814s, 94.737mV)

(1.6168ms, -191.796mV)

(1.1368ms, 193.580mV)

(656.792s, -198.076mV)

(176.812s, 139.497mV)

(1.7368ms, -250.140mV)

(1.1968ms, 228.476mV)

(716.790s, -262.424mV)

(236.809s, 213.027mV)

R=1k

R=500

R=100


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Time0s 0.1ms 0.2ms 0.3ms 0.4ms 0.5ms 0.6ms 0.7ms 0.8ms 0.9ms 1.0ms 1.1ms 1.2ms 1.3ms 1.4ms 1.5ms 1.6ms 1.7ms 1.8ms 1.9ms 2.0ms

V(R1:1,R1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(777.030s, -246.979mV)

(256.998s, 247.870mV)

(737.027s, -248.211mV)

(256.998s, 249.197mV)

(777.030s, -246.979mV)

(256.998s, 248.339mV)

R=1k

R=500

R=100

Time0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms 2.2ms 2.4ms 2.6ms 2.8ms 3.0msV(L1:1)

-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.5462ms, -33.640mV)

(1.0062ms, 33.857mV)

(526.236s, -34.017mV)

(75.552s, 31.221mV)

(1.5462ms, -66.570mV)

(1.0662ms, 65.906mV)

(526.236s, -66.185mV)

(110.482s, 54.886mV)

(1.6662ms, -202.021mV)

(1.1262ms, 199.653mV)

(646.231s, -208.955mV)

(166.250s, 146.222mV)

R=1k

R=500

R=100


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Figure 57 - PSPICE Simulation: Voltage across 1k Resistor in RL or LR Filter with 100mH Inductor

Time0s 0.5ms 1.0ms 1.5ms 2.0ms 2.5ms 3.0ms 3.5ms 4.0ms 4.5ms 5.0ms 5.5ms 6.0ms 6.5ms 7.0ms 7.5ms 8.0ms 8.5ms 9.0ms 9.5ms10.0ms

V(R1:1,L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(495.465s,-35.650mV)

(445.614s, 36.311mV)

(47.990s, 59.665mV)

(1.8025ms, -197.224mV)

(1.3025ms, 199.365mV)

(806.382s, -200.325mV)

(308.342s, 206.350mV)

F=10kHz

F=1kHz

F=100Hz

(7.5900ms, -249.486mV)

(2.5900ms, 249.486mV)

Time0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms 2.2ms 2.4ms 2.6ms 2.8ms 3.0msV(L1:1)

-16mV

-12mV

-8mV

-4mV

0V

4mV

8mV

12mV

16mV

(1.4996ms, -1.5810mV)

(1.0196ms, 1.5672mV)

(479.644s, -1.5618mV)

(5.3739s, 1.5723mV)

(1.4996ms, -3.1229mV)

(1.0196ms, 3.1041mV)

(479.644s, -3.0924mV)

(14.203s, 3.1364mV)

(1.4996ms, -15.639mV)

(1.0196ms, 15.644mV)

(539.642s, -15.401mV)

(49.819s, 15.125mV)

R=1k

R=500

R=100


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Figure 58 - PSPICE Simulation: Voltage across 100mH Inductor in RL or LR Filter



V(V1:+,L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

F=10kHz

F=1kHz

F=100Hz

(186.616s, -128.658mV)

(136.616s, 128.922mV)

(86.651s, -126.445mV)

(36.651s, 152.633mV)

(1.7491ms, -243.308mV)

(1.2491ms, 243.308mV)

(749.116s, -243.311mV)

(249.116s, 243.489mV)

(7.5491ms, -249.936mV)

(2.5491ms, 249.936mV)


V(L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

F=10kHz

F=1kHz

F=100Hz

(1.0740ms, -235.297mV)

(1.0240ms, 236.281mV)

(69.514s, -251.528mV)

(21.252s, 213.835mV)

(1.5990ms, -136.162mV)

(1.1240ms, 134.951mV)

(654.064s, -135.265mV)

(181.577s, 95.155mV)

(5.1240ms, -15.683mV)

(442.138s, 15.200mV)


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V(V1:+,L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(81.783s, -218.184mV)

(20.794s, 218.062mV)

(794.283s, -236.147mV)

(294.283s, 236.145mV)

(7.4193ms, -249.664mV)

(2.4193ms, 249.664mV)

F=10kHz

F=1kHz

F=100Hz


V(R1:2)-200mV

-150mV

-100mV

-50mV

0mV

50mV

100mV

150mV

200mV

(265.639s, -191.176mV)

(215.639s, 191.169mV)

(65.674s, -197.381mV)

(18.478s, 140.660mV)

(1.5531ms, -34.958mV)

(1.0781ms, 33.400mV)

(490.639s, -34.569mV)

(0.174s, 31.159mV)

(5.0781ms, -3.4546mV)

53.139s, 3.4444mV)

F=100Hz

F=1kHz

F=10kHz


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Figure 63 - PSPICE Simulation: Effective Time Constant of RL or LR Filter for 100mH and 22mH


V(L1:1)-800mV

-600mV

-400mV

-200mV

0V

200mV

400mV

600mV

L=22mH

L=100mH

(540.316s, 120.126mV)

(1.0300ms, -362.643mV)

(515.000s, 362.643mV)

(625.490s, 154.548mV)

(1.0300ms, -461.476mV)

(515.000s, 462.667mV)

Time0s 0.4ms 0.8ms 1.2ms 1.6ms 2.0ms 2.4ms 2.8ms 3.2ms 3.6ms 4.0ms 4.4ms 4.8ms 5.2ms 5.6ms 6.0msV(R1:2)

-20mV

-15mV

-10mV

-5mV

0V

5mV

10mV

15mV

20mV

F=10kHz

F=1kHzF=100Hz

(351.862s, -16.246mV)

(301.862s, 16.247mV)

(51.862s, -16.138mV)

(5.1445s, 15.140mV)

(1.4894ms, -1.6283mV)

(1.0019ms, 1.6396mV)

(526.862s, -1.6193mV)

(8.0479s, 1.5729mV)

(5.0269ms, -157.129V)

(26.862s, 157.158V)


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Figure 64 - PSPICE Simulation: Effective Time Constant of RL or LR Filter for 1mH

Figure 65 - PSPICE Simulation: Cutoff Frequency of RL Filter for 100mH

Tim

e

0

s0.5m

s1.0m

s1.5m

s2.0m

s2.5m

s3.0m

s3.5m

s4.0m

s4.5m

s5.0m

sV(L1:2)

-

200mV

-

150mV

-

100mV

-

50mV

0m

V

50m

V

100m

V

150m

V

200m

VF=1.591kHz

(1.3622ms, 176.231mV)

Time0s 10us 20us 30us 40us 50us 60us 70us 80us 90us 100us 110us 120us 130us 140us 150us

V(L1:1)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

L=1mH

(52.620s, 86.793mV)

(103.000s, -260.350mV)

(51.500s, 260.350mV)

(6.8735s, 18.135V)


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Figure 66 - PSPICE Simulation: Cutoff Frequency of RL Filter for 22mH

Figure 67 - PSPICE Simulation: Voltage across Potentiometer in RC or CR Filter with 100F Capacitor

Time0s 0.1ms 0.2ms 0.3ms 0.4ms 0.5ms 0.6ms 0.7ms 0.8ms 0.9ms 1.0ms 1.1ms 1.2ms 1.3ms 1.4ms 1.5ms 1.6ms 1.7ms 1.8ms 1.9ms 2.0ms

V(R1:2,C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(749.219s, -250.391mV)

(269.190s, 247.742mV)

(749.219s, -250.778mV)

(269.190s, 247.300mV)

(749.219s, -253.626mV)

(229.187s, 244.451mV)

R=1k

R=500

R=100


V(L1:2)-200mV

-150mV

-100mV

-50mV

0mV

50mV

100mV

150mV

200mVF=7.234kHz (299.603s, 176.258mV)


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Figure 68 - PSPICE Simulation: Voltage across 100F Capacitor in RC or CR Filter with Potentiometer

Figure 69 - PSPICE Simulation: Voltage across Potentiometer in RC or CR Filter with 1F Capacitor


V(R1:2,C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.7368ms, -250.140mV)

(1.1968ms, 228.476mV)

(716.790s, -262.424mV)

(236.809s, 213.027mV)

(1.6768ms, -235.256mV)

(1.1968ms, 228.979mV)

(716.790s, -251.663mV)

(236.809s, 185.188mV)

(1.6168ms, -130.740mV)

(1.0768ms, 132.091mV)

(596.795s, -132.713mV)

(116.814s, 94.737mV)

R=1k

R=500

R=100

Time0s 5ms 10ms 15ms 20ms 25ms 30ms 35ms 40ms 45ms 50msV(C1:2)

-4.0mV

-2.0mV

0V

2.0mV

4.0mV

6.0mV

8.0mV

(1.0283ms, 43.778V)

(466.289s, 751.309V)

(1.0283ms, 60.974V)

(466.289s, 1.4994mV)

(42.013ms, -3.5764mV)

(41.442ms, 3.3846mV)

(1.0283ms, -27.792V)

(466.289s, 7.3677mV)

R=1k

R=500

R=100


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Figure 70 - PSPICE Simulation: Voltage across 1F Capacitor in RC or CR Filter with Potentiometer

Figure 71 - PSPICE Simulation: Voltage across Potentiometer in RC or CR Filter with 0.1F Capacitor


V(R1:2,C1:2)-150mV

-100mV

-50mV

0mV

50mV

100mV

150mV

(1.5693ms, -130.694mV)

(1.0893ms, 131.827mV)

(609.319s, -131.108mV)

(129.698s, 95.739mV)

(1.5693ms, -73.819mV)

(1.0293ms, 73.859mV)

(549.321s, -74.426mV)

(86.577s, 59.664mV)

(1.5093ms, -15.803mV)

(1.0293ms, 15.688mV)

(489.323s, -15.669mV)

(38.322s, 15.098mV)

R=1k

R=500

R=100


V(C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.9767ms, -33.049mV)

(1.4968ms, 46.628mV)

(956.780s, -23.348mV)

(476.799s, 62.236mV)

(1.9767ms, -71.821mV)

(1.4368ms, 77.834mV

(956.780s, -63.499mV)

(416.802s, 103.525mV

(1.8567ms, -207.372mV)

(1.3168ms, 206.216mV)

(836.785s, -208.415mV)

(356.804s, 210.390mV

R=1k

R=500

R=100


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Figure 72 - PSPICE Simulation: Voltage across 0.1F Capacitor in RC or CR Filter with Potentiometer

Figure 73 - PSPICE Simulation: Voltage across 1k Resistor in RC or CR Filter with 100F Capacitor


V(R1:2,C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(778.146s, -227.369mV)

(728.146s, 227.278mV)

(715.646s, -244.371mV)

(213.380s, 241.820mV)

(7.5474ms, -253.377mV)

(2.5407ms, 245.830mV)

F=10kHz

F=1kHz

F=100Hz


V(C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.8693ms, -203.876mV)

(1.3293ms, 206.838mV)

(849.309s, -206.966mV)

(309.331s, 208.458mV)

(1.8093ms, -233.600mV)

(1.2693ms, 230.039mV)

(789.311s, -233.663mV)

(309.331s, 233.688mV)

(1.7493ms, -247.965mV)

(1.2693ms, 248.113mV)

(789.311s, -244.341mV)

(249.333s, 247.960mV)

R=100

R=500

R=1k


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Figure 74 - PSPICE Simulation: Voltage across 100F Capacitor in RC or CR Filter

Figure 75 - PSPICE Simulation: Voltage across 1k Resistor in RC or CR Filter with 1F Capacitor


V(R1:2,C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(76.033s, -235.572mV)

(26.033s, 228.263mV)

(1.7148ms, -251.763mV)

(1.2119ms, 234.949mV)

(715.741s, -264.807mV)

(220.890s, 214.150mV)

(5.9443ms, -133.342mV)

(1.3563ms, 98.549mV)F=10kHz

F=1kHz

F=100Hz

Time0s 20ms 40ms 60ms 80ms 100ms 120ms 140ms 160ms 180ms 200ms 220ms 240ms 260ms 280ms 300ms 320ms 340ms 360ms 380ms 400msV(C1:2)

-4.0mV

-2.0mV

0V

2.0mV

4.0mV

6.0mV

8.0mV

(465.194s, 750.060V)

(350.229ms, -3.5410mV)

(345.231ms, 3.9077mV)

(4.6666ms, 7.3660mV)

F=1kHz

F=100Hz

F=10kHz


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Figure 76 - PSPICE Simulation: Voltage across 1F Capacitor in RC or CR Filter

Figure 77 - Simulation: Voltage across 1k Resistor in RC or CR Filter with 0.1F Capacitor


V(R1:2,C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(3.6681ms, -220.504mV)

(3.6181ms, 220.504mV)

(76.111s, -242.426mV)

(26.111s, 195.510mV)

(1.5556ms, -131.737mV)

(1.0556ms, 132.826mV)

(561.017s, -132.829mV)

(113.174s, 95.366mV)

(5.0931ms, -15.695mV)

(498.585s,15.207mV) F=10kHz

F=1kHz

F=100Hz

Time0s 0.5ms 1.0ms 1.5ms 2.0ms 2.5ms 3.0ms 3.5ms 4.0ms 4.5ms 5.0ms 5.5ms 6.0ms 6.5ms 7.0ms 7.5ms 8.0ms 8.5ms 9.0ms 9.5ms10.0msV(C1:2)

-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(2.1005ms, -2.3083mV)

(2.0505ms, 4.7699mV)

(98.086s, 54.663V)

(51.033s, 7.1541mV)

(6.9443ms, -35.715mV)

(6.4443ms, 35.995mV)

(965.019s, -22.580mV)

(469.772s, 60.643mV)

(8.3443ms, -211.458mV)

(3.3443ms, 215.421mV)

F=1kHz F=10kHzF=100Hz


28/29


28

Figure 78 - PSPICE Simulation: Voltage across 0.1F Capacitor in RC or CR Filter

Figure 79 - PSPICE Simulation: Effective Time Constant of RC or CR Filter for 1uF and 0.1uF

Time0s 1ms 2ms 3ms 4ms 5ms 6ms 7ms 8ms 9ms 10ms 11ms 12ms 13ms 14ms 15ms 16ms 17ms 18ms 19ms 20ms

V(C1:2)-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

C=0.1F C=1F

(5.2265ms, 82.076mV)(6.2106ms, 82.076mV)

(5.0000ms, -248.416mV)

(10.200ms, 247.149mV)

Time0s 0.5ms 1.0ms 1.5ms 2.0ms 2.5ms 3.0ms 3.5ms 4.0ms 4.5ms 5.0ms 5.5ms 6.0ms 6.5ms 7.0ms 7.5ms 8.0ms 8.5ms 9.0ms 9.5ms10.0msV(C1:2)

-300mV

-200mV

-100mV

0mV

100mV

200mV

300mV

(1.3931ms, -33.287mV)

(1.3431ms, 33.246mV)

(74s, -20.295mV)

(51.111s, 56.650mV)

(1.7931ms, -198.129mV)

(1.3056ms, 198.942mV)

(809.503s, -199.814mV)

(298.962s, 205.756mV)

(7.6931ms, -249.044mV)

(2.6931ms, 249.044mV)

F=10kHzF=1kHz

F=100Hz


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Figure 80 - PSPICE Simulation: Cutoff Frequency of RC Filter for 100uF

Figure 81 - PSPICE Simulation: Cutoff Frequency of RC Filter for 1uF

Time0s 5ms 10ms 15ms 20ms 25ms 30ms 35ms 40ms 45ms 50ms

V(R1:1)-200mV

-150mV

-100mV

-50mV

0mV

50mV

100mV

150mV

200mVF=159.2Hz (15.186ms, 167.012mV)

Time0s 0.5s 1.0s 1.5s 2.0s 2.5s 3.0s 3.5s 4.0s 4.5s 5.0s

V(R1:1)-200mV

-150mV

-100mV

-50mV

0mV

50mV

100mV

150mV

200mVF=1.592Hz (1.5186s, 167.024mV)

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