You're debugging a circuit and the tools you're using aren't cutting it. What's your next move?

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Debugging a circuit can be a frustrating and time-consuming task, especially if the tools you're using are not giving you the results you need. Maybe your multimeter is not accurate enough, your oscilloscope is not fast enough, or your logic analyzer is not compatible with your circuit. What can you do to troubleshoot your circuit more effectively and efficiently? Here are some tips and tricks that might help you out.

本文章的要点总结

Advanced diagnostic tools:

When basic tools fail, switch to high-end diagnostics like logic analyzers for a deeper dive into circuit behaviors, helping you spot those tricky problems.
Collaborative troubleshooting:

Hit up knowledgeable colleagues or online communities for fresh perspectives and tips that could crack the case on your circuit woes.

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1 Check your assumptions

The first thing you should do when debugging a circuit is to check your assumptions. Are you using the right components, the right values, the right connections, and the right power supply? Are you following the schematic and the datasheet correctly? Are you accounting for the tolerances, noise, and parasitic effects of your circuit? Sometimes, a simple mistake or oversight can cause a big problem in your circuit, so make sure you double-check everything before moving on.

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Presanna Govindaraj
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If traditional debugging tools aren't sufficient, consider using advanced diagnostic equipment like logic analyzers or protocol analyzers. These tools offer deeper insights into circuit behavior and help pinpoint elusive issues. Collaborating with experienced colleagues or seeking guidance from online forums can provide valuable perspectives. Exploring alternative testing methodologies such as boundary scan testing or thermal imaging may also uncover hidden faults. By leveraging a combination of resources and expertise, engineers can overcome challenging circuit debugging scenarios effectively.

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Zackary Fowler

Hope Creek Licensed Senior Reactor Operator
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Real world example: A motor operated valve was going closed without a demand signal which would have required a unit shutdown to comply with operating requirements. This valve was located in a hospitable area of the plant where significant challenges could be faced to correct the issue as we assumed (limit switch failure). The team challenged the troubleshooting methodology and all possible causes before making a trip to this hot (130F ambient), dark, and low clearance area of the plant. The wiring which recognized the valve position had a finger-like interface which required good mechanical bonding for good conductivity. 30 minutes with a feeler gauge and it was determined the finger slots were 30 thou too big. DOH! How'd we miss that?

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Aleksander Nordmo

Electronics Engineer | Founder Navier USN
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When facing circuit debugging challenges and standard tools prove inadequate, I revert to foundational principles. Initially, I review the electrical schematics to make sure I understand the circuit's design. This critical step lays the groundwork for informed troubleshooting. Subsequently, I adopt a proactive approach by meticulously following the voltage through the circuit, focusing on functioning segments to isolate and identify the fault area. This strategic combination of in-depth schematic analysis and targeted isolation enables efficient problem identification and resolution, ensuring a professional and effective troubleshooting process. Or as I like to say: Follow the voltage!

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2 Simplify your circuit

Another way to debug your circuit is to simplify it as much as possible. You can do this by removing or bypassing non-essential parts, dividing your circuit into smaller modules, or using test points and jumpers to isolate sections of your circuit. By simplifying your circuit, you can narrow down the source of the problem and eliminate potential causes. You can also use this technique to test individual components or subcircuits before integrating them into the whole circuit.

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Vishwajith Achar

Sr Field Application engineer at RECOM Power
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This would be my step to debug the issues, as this may help in debugging the issue in wat part of the circuit. Once we finalize on the part of the circuit, try to isolate it if possible and check for issues less working if not need to debug it and check again.

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Ricardo Dias

Embedded Electronics Specialist | Leadership Specialist | RF - High Speed - Mixed Signal - Hardware Designer |
(已编辑)
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After doing some simulations, when it is possible, the best thing to do is isolate the different circuits in small cells. This will help to figure out where the problem really is. One step that a lot of people don't take into account is to explain how the circuit works for a colleague, this often helps most of the developers to figure out what is not working in their projects.

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3 Use alternative tools

If your current tools are not cutting it, you can try to use alternative tools that might suit your circuit better. For example, if your multimeter is not precise enough, you can use a digital caliper or a micrometer to measure the dimensions and resistance of your components. If your oscilloscope is not fast enough, you can use a frequency counter or a spectrum analyzer to measure the frequency and amplitude of your signals. If your logic analyzer is not compatible with your circuit, you can use a microcontroller or a computer to capture and analyze the data from your circuit.

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Simran Singh

Electrical Engineer at 7Next
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Was this written by AI? None of this makes sense. Why would I use calipers to measure physical distances in the case that my multimeter is “not precise enough”??

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4 Seek help from others

Sometimes, debugging a circuit can be too difficult or complex for one person to handle. In that case, you can seek help from others who might have more experience, knowledge, or skills in electronic engineering. You can ask your colleagues, mentors, instructors, or friends for advice, feedback, or assistance. You can also use online forums, communities, or resources to find answers, solutions, or suggestions. By seeking help from others, you can gain new perspectives, insights, and ideas that might help you solve your problem.

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5 Learn from your mistakes

Finally, debugging a circuit is not only a challenge but also an opportunity to learn from your mistakes. You can use your debugging experience to improve your electronic engineering skills, knowledge, and techniques. You can also use your debugging experience to avoid making the same mistakes in the future, or to prevent new mistakes from happening. By learning from your mistakes, you can become a better electronic engineer and a better problem-solver.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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You're debugging a circuit and the tools you're using aren't cutting it. What's your next move?

1

2

3

4

5

6

1 Check your assumptions

2 Simplify your circuit

3 Use alternative tools

4 Seek help from others

5 Learn from your mistakes

6 Here’s what else to consider

Electronic Engineering

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You're debugging a circuit and the tools you're using aren't cutting it. What's your next move?

1

2

3

4

5

6

1 Check your assumptions

2 Simplify your circuit

3 Use alternative tools

4 Seek help from others

5 Learn from your mistakes

6 Here’s what else to consider

Electronic Engineering

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