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Recent content by Gary Poon

  1. G

    Op-Amp selection for current sensing

    I am going to use a common Op-Amp configured as a differential op-amp high-side and low side current sensing to measure an AC load. The output of the op-amp go into the ADC of a MCU. I would like to ask is the offset voltage rating of the Op-Amp important when selecting the Op-Amp? Can I just...
  2. G

    Question about transistor

    Hi all~ I have a question about transistor. I got a trasistor which indicate that the max. current of emitter is 1A. I connect it to a transfomer and the transfomer will "pull" about 1.2A at the primary stage when it is in action. Obviously, the transistor will burn. I would like to ask...

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