結果:

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.

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)

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.

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!

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.

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
• The 12500th vote
• The 13000th vote
• The 13500th vote
• The 14000th vote
• The 14500th vote
• The 15000th vote
• The 15500th vote
• The 16000th vote

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!

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!!

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.

As part of MATLAB Central’s 20 year anniversary celebration, we created the MATLAB Mini Hack . The contest starts today on Oct. 4th!

What to do?

Generate an interesting image using up to 280 characters of MATLAB code.

Who can play?

Participants across all skill levels are welcome. Create original entries of your own code, remix others’ entries and make them your own, or simply vote on ENTRIES you love!

How to win prizes?

Those at the top of the leaderboard at the end of the contest will win up to $300 Amazon gift cards, 5 customized T-shirts, or special badges. Visit the prizes section on the contest page for more information.

To add more fun, we will award RANDOM PRIZES that every participant has a chance to win.

• Each week, we will pick 5 players who participate in both the Treasure Hunt and MATLAB Mini Hack .
• Each week, we will have different surprise giveaways.

Important Notes

• The first week (Oct. 4th, 2021 ~ Oct. 10th 2021) is for creating entries only. Voting starts on Week 2.
• Make sure you follow the contests (click the ‘follow the contests’ button on the top) to get notified when prizes are awarded and of other important announcements.

We hope you are the winner!

R2021b is live! There are two new products, five major updates, and hundreds of other feature updates in this latest release. Download or access MATLAB Online to discover what’s new.

New Products

• RF PCB Toolbox - Perform electromagnetic analysis of printed circuit boards
• Signal Integrity Toolbox - Simulate and analyze high-speed serial and parallel links

Major Updates

• Lidar Toolbox - Use Lidar Viewer app to visualize, analyze, and preprocess lidar point clouds interactively
• Simulink Code Inspector - Use Code Inspector contextual tab to check compatibility, inspect code and view results directly in the model
• Simulink Control Design - Design Model Reference Adaptive Controllers
• Symbolic Math Toolbox - Get guidance for symbolic workflows with next-step suggestions in MATLAB Live Editor
• Wavelet Toolbox - Use wavelet analysis to process and extract features for signals and images for AI workflows

Check out our release highlight page for details.

Share your experience with the community

Are there any new features you find particularly useful? Are you trying the new product to solve a particular problem? Share your story with us no matter it’s big or small. We plan to publish those stories in the highlight channel so that community users can get more out of the new release. A good example is an article written by Adam Danz . If you are interested, contact me via email on my profile card.

Several educators worldwide use MATLAB Grader to scale assessments and automatically grade MATLAB coding assignments. MATLAB Grader can be used in any learning environment, for both formative assessments with automated feedback and summative assessments, such as quizzes and exams.

Educators often revise and update their MATLAB Grader problems. They may sometimes want to revisit a past version of a problem, such as to debug an assessment test error. Instructor users can now browse the version history for a specific problem and see draft and final versions.

Note that the versions are read-only and rollback is not supported at this time. However, you can copy code or descriptions and update the problem accordingly.

Get started with MATLAB Grader. If you are new to it, watch the MATLAB Grader Overview video and try the interactive Teaching with MATLAB online course (Section 6 is about MATLAB Grader).

Join our celebration of the 20th anniversary of MATLAB Central community! You are invited to enter 2 contests - A Treasure Hunt and a MATLAB Mini Hack - to have fun and win prizes.

How to Play

• In the Treasure Hunt, complete 10 fun tasks to explore the ‘treasures’ in the community.
• In the MATLAB Mini Hack, use up to 280 characters of MATLAB code to generate an interesting image. Simply vote for the entries that you like or share your own entries to gain votes.

Prizes

You will have opportunities to win compelling prizes, including special edition T-shirts, customized T-shirts, Amazon gift cards, and virtual badges. Your participation will also bump up our charity donations.

Ready to participate?

Visit the community contests space and choose the contest you’d like to enter. Note that:

• You need a MathWorks account to participate. If you don’t have a MathWorks account, you can create one at MathWorks sign in .
• Make sure you follow the contests (click the ‘follow the contests’ button on the top) to get notified for prize information and important announcements.

For the full contest rules, prizes, and terms, see details here .

We hope you enjoy the contests and win big prizes. NOW, LET THE CELEBRATION BEGIN!

MATLAB Mobile makes it convenient to learn and teach in disciplines requiring computational thinking, such as mathematics, science, and engineering. It can also be used for virtual labs by acquiring smartphone sensor data. As an instructor, you can author examples in MATLAB and demonstrate them on your smartphone or tablet. Students can follow along on their mobile device or tablet to instantly connect results to the concepts they are learning. This is especially relevant for distance learning, where some students may have limited or no access to a full-fledged computer.

Educators make their course material more interactive, promote self-directed learning, and increase student engagement through Live Editor. You can now run and edit live scripts on iOS and Android devices.

Get MATLAB Mobile on the Play Store or App Store, or learn how to teach using Live Scripts.

Hello! I am a 3rd year mechanical engineering student from IIT Ropar. We are participating in EBAJA 2022. I thank Mathworks for providing the customisable vehicle template https://www.mathworks.com/matlabcentral/fileexchange/79484-simscape-vehicle-templates

I have learnt to customise the models parameters of Bus, Sedan, Trucks, etc using the UI provided. However the vehicle models does not include the BAJA ATV in it which we required the most for the animations and simulation results. I needed some assistance for replacing the given vehicle model with a BAJA ATV.

-Tushar Raut LinkedIn: https://www.linkedin.com/in/tushar-raut-73ba75194/