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problem with low current

  1. R

    Problem with Low current ...

    Hello, I wanna help, my modem d-link run with 12v, 0.5A ,,, i have power supply with 48v , i want use it to run my modem, i use voltage regulator l7812cv , it convert 48v to 12v , 1A , but modem doesn't run i think the source current is too low therefor modem does not run , so how can boost or...

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