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DC Electronic Load Korad KEL103 reverse polarity
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Topic: DC Electronic Load Korad KEL103 reverse polarity (Read 909 times)
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MrYakimovYA
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DC Electronic Load Korad KEL103 reverse polarity
«
on:
June 19, 2023, 01:21:10 am »
Hello!
I can't find anything about subj: what will with my Korad KEL103 do if I reverse polarity at binding post? I.e. does KEL103 failed if I connect the + of my source to - of the load and - of my source to the + of the load? User Manual says nothing about it. I have super brand Fujitsu DC Electronic Load at my work. There is a back connected diode at the binding post and reversing polarity does not harm it. So what with the Cnineese instrument?
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GigaJoe
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Re: DC Electronic Load Korad KEL103 reverse polarity
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Reply #1 on:
June 19, 2023, 02:26:36 am »
would it be possible to test with some resistor as a safety
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BILLPOD
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Re: DC Electronic Load Korad KEL103 reverse polarity
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Reply #2 on:
June 19, 2023, 01:24:59 pm »
Using the continuity feature of your DMM, see if your negative banana jack, (black one), is connected to your earth ground, (green jack)
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HKJ
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Re: DC Electronic Load Korad KEL103 reverse polarity
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Reply #3 on:
June 19, 2023, 01:28:07 pm »
Generally DC load to not handle reverse polarity, there will most likely be about a diode drop in reverse voltage (From the diode in a MOSFET transistor).
You can use an external high current bridge rectifier to improve that situation.
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