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| Korad KA3005P power supply: UI changes |
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| ebastler:
One more update: I just received the second unit I had ordered after being pleasantly surprised by the first one. Number two has a slightly less pleasant fan; I can hear what seems to be a little bearing noise. Nothing terrible, no rattling or such, it sound like just a bit of extra friction. So far my "solution" is simply to place the two units next to each other on the shelf such that the quieter one is closer to me... Controls and LEDs are exactly the same on both units, as one would expect. |
| NeonTron:
Can you please post a picture of the back of the unit? I'm wondering if the black case model from Welectron can handle 110V input. The version on Amazon seems capable of being switched between 110V and 220V (see attached picture). |
| ebastler:
The updated Korad version I received from Welectron is labelled for 230V, and does not have a selection switch for the mains voltage -- just like the earlier version. Unfortunately there is no easy way to re-wire the transformer primary windings inside the unit either: Only two wires are brought out from the transformer, not two separate primary windings which one could wire either in series or parallel. (See the attached photo -- mains jack on the left, power switch on the right.) It seems that Korad actually installs different transformers in the 230V vs. 110V versions. |
| eevblogger88:
--- Quote from: ebastler on April 21, 2021, 03:15:07 pm ---One more update: I just received the second unit I had ordered after being pleasantly surprised by the first one. Number two has a slightly less pleasant fan; I can hear what seems to be a little bearing noise. Nothing terrible, no rattling or such, it sound like just a bit of extra friction. So far my "solution" is simply to place the two units next to each other on the shelf such that the quieter one is closer to me... Controls and LEDs are exactly the same on both units, as one would expect. --- End quote --- What's the most quiet fan that you can recommend to change the stock one in the Konrad? |
| ebastler:
--- Quote from: eevblogger88 on April 16, 2022, 05:17:37 pm ---What's the most quiet fan that you can recommend to change the stock one in the Konrad? --- End quote --- I don't have personal experience replacing the fan; I am still running the stock fans on both my units. Any 80 mm * 25 mm fan rated at 12V should work in principle. If you Google "korad ka3005p fan replacement" you will find various Youtube videos showing fan replacements. Artic Cooling F8, Noctua NF R8, and some Panaflo brushless fan are mentioned as replacements there. I think all of them come with a different plug than the one used in the Korad supply, so you will have to swap out the plug or get an adapter. Having said that -- are you already using a KA3005P, and have confirmed that the fan noise is an issue for you? I would definitely test-drive it for a while; as mentioned, I found that I don't mind the fan. Edit: Fixed typo in the model number; the KA3005P (with USB/serial interface) is the most popular model, and the one discussed here. |
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