byllc

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  • in reply to: USB Electrical Feedback #7183
    byllc
    Member

    I got the fan working, your confirmation that it should work if the jumper was set prompted me to check under the shrink tubing on the fan cable and sure enough, one lead had come undone.

    As far as the voltage that I can feel on my laptop. It really is subtle. Its a very feint tingle, I almost thought I was imagining it until I confirmed by unplugging and plugging back in the usb cable. If it is AC, I am with you on that one “From Where?” The tinyg has 24v DC run to it. Although my power supply and estop switch is inside one of these
    http://www.home-security-systems-answers.com/images/disable-the-alarm-020.jpg

    The AC ground cable is grounded to the ground point on the power supply as well as being bolted to this case. Is it possible that ground is somehow finding it’s way to the tinyg g? I’m going to see if I have one of those GFI testers around or grab one from the hardware store tomorrow to test the outlet.

    I am using the case so that I can eventually mount a 48V 400W power supply for my spindle in there as well.

    I do have a couple multimeters laying around. I rarely deal with more than 3.3 or 5 volts situations so thats why I decide to start asking questions. I’ll see if I can get some sense of the charge that is occurring.

    Thanks Again.

    • This reply was modified 9 years, 11 months ago by byllc.
    in reply to: USB Electrical Feedback #7180
    byllc
    Member

    cmcgrath5035 Thanks for the response. Im actually in North America so I’m running at 110. My power supply is 240W and I think thats where you got the 240 from. I do have the AC ground attached. I suppose it is possible that the wall outlet is not properly grounded though and I will check that. I also have the ground attached to the metal enclosure I am using.

    As far as the fan is concerned I do have the jumper in place already but I’ve never gotten it to spin, it may be a bad fan, It’s possible I powered it up without the jumper at some point.

    Thanks again.

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