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Recent content by Wilderness bob

  1. W

    Which transistor to switch power?

    I might need to the wart to 9v then use an external voltage regulator to get it down to at most 7.5v for the servo. The MOSFET is not to control the position, as you said, the servo provides the means. It is simply to reduce wear, power consumption, and heat buildup while the servo is in the...
  2. W

    Which transistor to switch power?

    Apparently a nano will run on 6v min. Not sure I understand why it will run happily from the USB with only 5v, does the USB bypass the regulator? Any way, I don’t understand about the Vcc, the nano output is 0-5v regardless of the vin. I have to disagree about the servo, it is ideally suited to...
  3. W

    Which transistor to switch power?

    at the rest position, the servo will come up against a hard stop, and though the servo knows it's position relative to what the micro tells it to be and where the internal pot is, it doesn't know that it should stop when it meets the hard stop. also at this hard stop the system will have...
  4. W

    Which transistor to switch power?

    I can switch either Up to 5v Yep, though there is only one control, the other is a feedback signal from the servo just to verify it’s actual position. I didn’t need to include that in the sketch, just ads confusion.
  5. W

    Which transistor to switch power?

    i realize that, and in this case while "off" the servo will be a position that is mechanically locked so it won't need to rely on power to hold it. it will be off most of the time, a week at at time, that's why i want to switch the power off to the servo when it's in the rest position, no need...
  6. W

    Which transistor to switch power?

    this is obviously a very simple diagram. the servo will draw a max of 1800mA stalled at 6V.
  7. W

    Which transistor to switch power?

    Hey everyone, I thought this was a beginner forum, I'm very much a beginner and I have a very basic question. I need to switch a max of 2A @ 6Vdc and thought I would need a jfet based on my understanding, but I haven't been able to sort through the filters on the digikey site. I thought I could...
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