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Image Analyst
Image Analyst
最後のアクティビティ: 2022 年 4 月 7 日

White and gold
32%
Blue and black
42%
I can see it both ways, depending
16%
Not sure or something else/neither
10%
419 票
Image Analyst
Image Analyst
最後のアクティビティ: 2022 年 1 月 2 日

English
38%
Other European language
20%
East Asian (Chinese, etc.)
11%
Indian (any)
12%
Spanish
5%
Other (Arabic, etc.)
14%
1117 票
Image Analyst
Image Analyst
最後のアクティビティ: 2021 年 12 月 22 日

Within the past year
24%
1 - 5 years ago
38%
5.01 - 10 years ago
17%
10.01 - 21 years ago
12%
During the last century (1900's)
8%
1300 票
Image Analyst
Image Analyst
最後のアクティビティ: 2021 年 12 月 29 日

A full prof. version w/all TB's
30%
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6%
MATLAB swag (t-shirt, cap, mug,etc)
30%
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12%
Full web site moderator privileges
2%
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20%
972 票
R2021b (latest official release)
35%
R2020a - R2021a
30%
R2018a - R2019b
17%
R2016a - R2017b
9%
R2015b or earlier
8%
4244 票
Satellite Communications Toolbox
53%
Mapping Toolbox
9%
Signal Processing Toolbox
14%
Navigation Toolbox
19%
Other (Explain in comments)
4%
2403 票

Hi, currently I'm studying about DC-DC Boost converter with controller. After I applied the step time, the output voltage supposed to follow the step time, but there is some delay in the simulation results after I applied the "step time" in the step input block. Can someone help, why this delay occur? Please see the attached pictures. Thanks

Dr Narayanaswamy P R Iyer
Dr Narayanaswamy P R Iyer
最後のアクティビティ: 2021 年 11 月 23 日

As per data sheet for VIPER22A, the product is obsolete.

Dr Narayanaswamy P R Iyer
Dr Narayanaswamy P R Iyer
最後のアクティビティ: 2021 年 11 月 23 日

For UC3843A you will have to refer to the data sheet, link given below: https://www.ti.com/lit/ds/symlink/uc3843a.pdf?ts=1637624394197&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUC3843A

For UC3843A, the reference output voltage is 5 V and the normal output voltage is 13.5 V.

Rose Li
Rose Li
最後のアクティビティ: 2021 年 11 月 20 日

After repairing the power supply of a big water buffalo PC150NCA, now all the parts found to be broken are replaced, but the power-on output 12V is only 4.2V. The original power supply block is UC3843B, which is not sold locally. I can only buy a UC3843A replacement . I don’t know if the low output voltage has anything to do with this (the optocoupler and the 431 voltage regulator block have also been replaced)

Steve Schaefer
Steve Schaefer
最後のアクティビティ: 2021 年 11 月 22 日

Attention all Controls Professors, Teaching Assistants, and Students!

The Virtual Hardware and Labs for Controls by Brian Hong is an absolute must-have from the MATLAB Central File Exchange. With the help of Simscape for physical modelling and simulation of mechatronic systems,

  • students can use the interactive experiments to teach themselves some of the concepts of control theory in a learn by doing approach.
  • professors and TA’s can use this to replace or augment actual lab work.

With tightening budgets and/or in person class restrictions this can help you transfer these vital skills to the students in a fun manner. Here is an overview of the available modules:

https://www.mathworks.com/matlabcentral/fileexchange/100064-virtual-hardware-and-labs-for-controls

If you have any questions feel free to leave a comment below and I’ll get back to you.

Sumit Tandon
Sumit Tandon
最後のアクティビティ: 2021 年 11 月 17 日

Hi DLC, in case you haven't seen it already, Dr. Dennis Dahlquist and Dr. Zekeriya Aliyazicioglu recently developed a collection of Virtual Labs in Electric Circuits . Please feel free to explore and share your thoughts!

Rose Li
Rose Li
最後のアクティビティ: 2021 年 11 月 11 日

With the switching power supply made by VIPER22A scheme , the 5V output always has noise, and the ripple exceeds 200MV after loading. How to change it? 1. 220VAC input, two outputs, 24V and 5V output are noisy, the ripple after 5V load is more than 200MV, 5V is connected with an LDO to 3.3V, and the measured 3.3V is also noisy, and the LDO heats up seriously. Change The LDO remains unchanged. 2. It is suspected that the load current is large, but I changed a circuit board with the same scheme and found that there is no noise. Although there are ripples, it is not very hot. 3. In addition, directly use a 5V adapter to convert to 3.3V through the same LDO. problem. How to change the device in this figure? 4. For hardware novices, the transformer will not be changed temporarily, and I hope to improve it by adjusting other devices.

Chen Lin
Chen Lin
最後のアクティビティ: 2021 年 10 月 27 日

VOTE on your favorite MATLAB images before Oct. 31 and win special edition T-shirts!

In just 2 weeks, 11,000 votes have been cast on 1200+ entries ! In the final week (Oct 25~Oct 31, 2021), we will add some fun and give out a T-shirt to lucky voters who cast:

  • The 12000th vote
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Furthermore, for every vote an entry gets, MathWorks will donate $1 to Direct Relief (Maximum amount of $20 donated per entry; maximum of $20,000 in total).

Look at the entries , and if they make you smile, VOTE!

Stateflow states and transitions
27%
MATLAB Function block code
18%
Signal lines
9%
Configset settings
9%
MATLAB Live Script
36%
Other (Add a comment below)
0%
11 票
Image Analyst
Image Analyst
最後のアクティビティ: 2021 年 12 月 16 日

App Designer
34%
GUIDE
12%
Built in funcs (inputdlg, uigetdir)
6%
Low level functions (uibutton,etc)
7%
Excel, Visual Basic, Python, etc.
4%
I don't build or use GUIs
38%
1170 票
goc3
goc3
最後のアクティビティ: 2021 年 11 月 7 日

A bunch of quick, simple problems
16%
A structured, educational set
15%
Brain-teasers
16%
Random miscellany
3%
Something else
2%
What are Problem Groups?
49%
1777 票
Wendy Fullam
Wendy Fullam
最後のアクティビティ: 2021 年 10 月 14 日

Categorical navigation is now available in MATLAB Answers.

  • Categories empower you to find, watch, and answer questions by topic and product, rather than product alone.
  • Individual answers have been categorized using an AI model written by MathWorks developers. Read more about our method here.

FAQ

1. What if I've bookmarked or subscribed to a product?

The links will continue to work but use a different filter mechanism.  We encourage you to try the new category filter, to find more questions in your topic of interest.

2. Can I still select a product on the question?

Yes - and product and tags are factored into the text analytics algorithm.  Correcting those fields should improve the nightly categorization. 

Categories are also shown in the Help Center.

Check out your favorite topic of interest and let us know how we're doing in the comments below!

Hi Distance Learning Community members, if you are looking for content in Descriptive Statistics and Probability Distributions for teaching in a course or just brushing up on the concepts yourself, check out these Live Scripts developed by Dr. Ward Nickle from Humboldt State University. If you are interested, this material is also available in Japanese . Enjoy and looking forward to hearing your thoughts!!

Chen Lin
Chen Lin
最後のアクティビティ: 2021 年 10 月 15 日

What amazing images can be created with no more than 280 characters of MATLAB code? Check out the GALLERY of 700+ entries from the MATLAB Mini Hack contest.

VOTE on your favorite images and help fight the global pandemic! For every vote an entry gets, MathWorks will donate $1 to Direct Relief *.

How can I vote?

1) You need to log in with your MathWorks Account. If you do not have a MathWorks Account, you can create one at MathWorks sign in .

2) You can vote for an entry by clicking on the heart icon on an entry card or the vote button on the entry detail page.

*Maximum amount of $20 donated per entry; maximum of $20,000 donated based on the combined totals raised from the Treasure Hunt contest and the MATLAB Mini Hack contest.

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