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| Inside the new Korad KA3305P linear PSU |
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| SantaClaw:
Info: The way you set Over Current and Over Voltage protection is very easy. I found it by looking at the screen, and noticing that there was a "SET" light besides the indicator lights for OVP and OCP. Basically, if you push and hold the OVP or OCP buttons, first one then the other, or separately ofc, both channels will display the currently set OVP and OCP values, as long as SET is glowing next to OCP or OVP, you can set it just like you set the voltage and current during normal operation. |
| torch:
--- Quote from: SantaClaw on December 17, 2015, 03:47:23 pm --- The only issue I have met, is that one time I powered it on, it turned on with the output on !! I think it was because of the settings in the software? I've been unable to replicate it. --- End quote --- Mine powers up in the "on" state if it was powered down in the "on" state and vise-versa. --- Quote ---Alos, the most noisy thing is the regulators for the fan, they keep buzzing, changing with the pitch of the fan... --- End quote --- Mine don't buzz. Maybe yours has a bit of a gap between a heat sink and the board? I'm curious, does yours have the serial mode bug that mine exhibits with my replacement board? IE: When Serial mode is selected with the output turned off, the current limit is displayed as 0.000 on both channels. (although it works properly and displays properly when setting the current). |
| SantaClaw:
--- Quote from: torch on December 18, 2015, 01:50:50 am ---I'm curious, does yours have the serial mode bug that mine exhibits with my replacement board? IE: When Serial mode is selected with the output turned off, the current limit is displayed as 0.000 on both channels. (although it works properly and displays properly when setting the current). --- End quote --- Yup, It does the same thing. Ofc, I set the current limit on CH2 and it changes on both channels. --- Quote from: torch on December 18, 2015, 01:50:50 am --- --- Quote from: SantaClaw on December 17, 2015, 03:47:23 pm ---Also, the most noisy thing is the regulators for the fan, they keep buzzing, changing with the pitch of the fan... --- End quote --- Mine don't buzz. Maybe yours has a bit of a gap between a heat sink and the board? --- End quote --- Well, they/it will start making a buzzing/grinding sound about 45 to 60 seconds after I turn it on, with no load. I had the cover off, and it looks like it applies very low power to the fan at this stage, PWM? it doesn't spin on it's own, but starts if I give it a little help. The fan spins easily though, so it's working as it should, also it starts on it's own if I leave it alone long enough. |
| torch:
--- Quote from: SantaClaw on December 18, 2015, 06:49:52 am ---Yup, It does the same thing. Ofc, I set the current limit on CH2 and it changes on both channels. --- End quote --- Yes, Ch2 is the master. |
| SantaClaw:
--- Quote from: torch on December 18, 2015, 12:58:02 pm ---Yes, Ch2 is the master. --- End quote --- Yup, both in Parallel and Series :) |
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