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It's pcb ok
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mimibogza 5 years ago
Hy it's my pcb ok for use? I designed pcb layout for remote relay controll. I add C1 decoupling capacitor (10uf) and 0.1nf for uln and attiny. Pcb trace width for hight voltage is 1.780 mm.. [https://easyeda.com/mimibogza/irrelay](https://easyeda.com/mimibogza/irrelay) Can i impove it or is good (for electronic beginner). Sorry for bad english
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UserSupport 5 years ago
Hi The U3 connection have problem, you need to connect to net flag with wire like below. ![图片.png](//image.easyeda.com/pullimage/REu7iWSZMJJ5JTjjFSR6NjPytNtlQFK7xXjvvsXB.png)
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andyfierman 5 years ago
"...Pcb trace width for hight voltage is 1.780 mm.." It is not the width of the copper track that matters. It is the clearance between your high voltage track and everything else around it. There are online tools that will tell you what the minimum creepage and clearance is for any specified voltage and how it changes for surface and inner layers.
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mimibogza 5 years ago
@andyfierman i have 1.780 mm trace only for relay connection not for trace from uln its ok?
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andyfierman 5 years ago
You need to set the trace width based on how much temperature rise you are willing to allow at the maximum current the track has to carry. Use the online calculators you will find by searching for: PCB track width calculator
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andyfierman 5 years ago
We can't tell you what you track and gap should be because you have not stated the voltages and currents around your circuit. Please see: How to ask for help and get an answer for more about what info you need to publish when asking for help on a project.
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