NOTE: Due to a difference between our lab equipment and what is specified in this lab, there are numerous adjustments and changes made to the schematics and tables in the handouts. Follow the modified directions on the lab sheet very carefully.
This week we will investigate a circuit which will create a PWM (Pulse-Width Modulated) output. You can download a copy of the experiment here in the Registered Users Only area. A hard copy will be provided for you in lab on Tuesday or Thursday, 2/11 & 13.
Post your screenshots as a Reply to this Topic.
This circuit uses the LM311 Precision Comparator which most of you used last semester for the Thermostat Temperature Comparator experiment, along with the LM34. There are additional handouts to explain the operation of the LM311 and the actual LM311 Data Sheet.
Week #4: (2/10-14) PWM Circuit
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- Posts: 53
- Joined: Fri Jan 26, 2018 10:10 am
Re: Week #4: (2/10-14) PWM Circuit
Konnor Busiere
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- eet250timeprodc_1.png (29.39 KiB) Viewed 5093 times
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- eet250timeprodc_2.png (30.17 KiB) Viewed 5093 times
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- eet250timeprodc_4.png (29.05 KiB) Viewed 5093 times
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- Posts: 38
- Joined: Thu Jan 25, 2018 6:13 pm
Re: Week #4: (2/10-14) PWM Circuit
I've completed Experiment #4 : Time Proportioning DC Control Circuit
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- IMG_6647.JPG (1.19 MiB) Viewed 5092 times
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- Potentiometer 1.25V
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- Potentiometer 2.50V
- scope_04.png (30.06 KiB) Viewed 5092 times
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- Potentiometer 3.75V
- scope_05.png (32.02 KiB) Viewed 5092 times
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- Posts: 27
- Joined: Mon Sep 10, 2018 9:21 am
Re: Week #4: (2/10-14) PWM Circuit
I have completed the lab.
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- scope_33.png (30.19 KiB) Viewed 5088 times
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- scope_34.png (30.31 KiB) Viewed 5088 times
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- scope_35.png (30.54 KiB) Viewed 5088 times
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- Posts: 42
- Joined: Sun Sep 09, 2018 7:28 pm
Re: Week #4: (2/10-14) PWM Circuit
Finished the lab
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- scope_86.png (28.09 KiB) Viewed 5087 times
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- scope_87.png (28.25 KiB) Viewed 5087 times
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- scope_88.png (28.26 KiB) Viewed 5087 times
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- Posts: 43
- Joined: Fri Sep 07, 2018 10:15 am
Re: Week #4: (2/10-14) PWM Circuit
week 4 250
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- week4pic2.png (28.35 KiB) Viewed 5085 times
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- Posts: 43
- Joined: Mon Feb 04, 2019 9:22 pm
Re: Week #4: (2/10-14) PWM Circuit
Conner Richter has completed this lab.
Picture 1 => 1.25V
Picture 2 => 2.5V
Picture 3 => 3.75V
Picture 4 => 4.958V
Picture 1 => 1.25V
Picture 2 => 2.5V
Picture 3 => 3.75V
Picture 4 => 4.958V
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- csr_lab_7.png (27.32 KiB) Viewed 5083 times
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- csr_lab_8.png (27.53 KiB) Viewed 5083 times
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- csr_lab_9.png (27.71 KiB) Viewed 5083 times
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- csr_lab_10.png (27.37 KiB) Viewed 5083 times
Re: Week #4: (2/10-14) PWM Circuit
I have completed this lab.
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- scope_1.2v.bmp (1.15 MiB) Viewed 5072 times
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- scope_2.5v.bmp (1.15 MiB) Viewed 5072 times
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- scope_3.7v.bmp (1.15 MiB) Viewed 5072 times
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- scope_5.0v.bmp (1.15 MiB) Viewed 5072 times