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Re: [softrock40] Ensemble TXRX 3.3volt powersupply

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  • Alan
    ... From: PA2MPD Subject: [softrock40] Ensemble TXRX 3.3volt powersupply ... Rinus, You are following Robby s page carefully, using USB power and correct
    Message 1 of 2 , Dec 1, 2011
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      ----- Original Message -----
      From: "PA2MPD"
      Subject: [softrock40] Ensemble TXRX 3.3volt powersupply


      >
      > After completion I tested the voltages of the usb powersupply
      > ............... but nothing on my digital multimeter.
      > The 12V and 5 V of the main powersupply are OK.
      >

      Rinus,

      You are following Robby's page carefully, using USB power and correct ground
      point?


      > And there is no (ground) connection between the mainpowersupply and the
      > USB powersupply.

      That is correct.

      >
      > So in my opinion the main suspect is likely to be the LP2992AIM5-3.3V
      > regulator.
      > Any other simulair problems ? and please suggestions how to solve this?

      What voltages on the pins?

      >
      > I think the best thing to do would be installing a new LP2992
      > .................. but where to get this tiny part in Europe ????
      >

      Farnell UK list it. Postage seems free but maybe just to UK?

      73 Alan G4ZFQ
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