Inquiry About TOBSUN ELECTRONICS CO., LTD.

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Inquiry About TOBSUN ELECTRONICS CO., LTD.
  • ******@outlook.com
  • 58.171.*.*
  • 2019-05-17 11:46:53
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Inquiry About TOBSUN ELECTRONICS CO., LTD.2019-05-17 11:46:53
Hi. I have purchased four of your 24 to 12 volt regulators,THJ2412C240Z, as I have been using a 30A version which has been OK, and I was pleased with it........ But I have had two of the 240 watt  regulators fail after only a few hours use. I have a 13A fuse in the input + lead and I have a NiCad/nimh  charger on the output as the load.. It appears that whatever you are using as the pass device has failed. .I can measure SC on input to neg and output to neg of both units... Do you have a faulty batch, or am I doing something wrong...., .  Do I need to add some capacitance  or reverse diodes across the in to neg and out to neg.....They have both failed at switchon of the input voltage. I can find no faults with the load.
Thankyou,
Bruce.
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