| Electronics > Projects, Designs, and Technical Stuff |
| [SOLVED] Need help with OPAMP circuit pls. |
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| Chriss:
--- Quote ---Nearly all AC:DC power supplies contain transformers. --- End quote --- You alright about that, I was thinking in iron core transformer where are the two coils separated from each other. Somehow I more trustful in this type of AC/DC adapters, I also know about the efficiency of those robust old transformers but I saw a lot a time huge damage on the secondary side when that low-cost psu's are failing. Most of the time such a failure was made because of a shored cap which is connected between the primary and sec side of the switching psu. I can't know the quality of that almost always made in China switching mode psu's... But however, I agree with your consideration. --- Quote ---As far as your UPS is concerned: are you sure you're looking at the gap between the mains and DC traces? --- End quote --- Yes, I look at the gap between the mains and DC trace, maybe it is 1.5mm but not more. It is hard to measure and I have also sayit is a low-cost UPS. --- Quote ---I recommended a distance of 5mm between the mains and DC side... --- End quote --- I have a distance around 8-10mm. So I think that will be ok. Btw. I made the correction as you suggested in your post here: --- Quote ---November 24, 2018, 12:57:42 am --- End quote --- and the stuff works like a charm! I'm very happy. Thank you. |
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