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  1. J

    Portable Power Supply

    Ok, It was my mistake, the s9012 is not equivalent to 3906 transistor! I replaced the s9012 with the 3906 and is working great! Thank you!
  2. J

    Portable Power Supply

    Hello, I made the circuit with the only difference that I used s9012 instead of 3906 transistor, but I experience high temperature to the 22ohm resistor. What do you think is the problem?
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