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WTB: 12v lilliput egg

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  • WTB: 12v lilliput egg

    12v lilliput egg.

    3 of.

    uk preferred.

    cheap etc.
    Lez, more widely known as flez1966

  • #2
    I have one, its been mod'd (not by me) to run off of a pc psu. Interested? I'm in the US unfortunitly.

    -matt

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    • #3
      ey its a usual problem of post etc.

      Think I'l be just as well building 3 new little supplys over the weekend.
      Lez, more widely known as flez1966

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      • #4
        WTB: 12v lilliput egg
        no you really don't
        -Jesus- King of Kings Lord of Lords

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        • #5
          Originally posted by antimatter
          no you really don't


          Thanatos.
          RexBruMet Skin for FrodoPlayer

          Nissan Aux-in MOD


          Originally posted by bgoodman
          We're an international forum, post in whatever langauge you like.

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          • #6
            The Lilliput "egg" is nothing more than a simple line filter (coil + capacitor) and a zener diode to clamp spikes above 12V. You could easily build one yourself, but you would be even better off with a regulated 12V supply. I think the Lilliputs draw about 600mA, so a 1A regulator should be more than sufficient.

            Of course, if you already have a source of regulated 12V (say, from your PC power supply) there isn't any reason you can't tap into that (aside from overloading the 12V on your PCs supply.)

            -p.

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            • #7
              yup, my egg was a real regulator, 9-16v in, 12v out, still have one but somehow I have lost 2 (have 3 screens)

              Dont want to tap the pc its heavy enough on the psu as it is!

              Been testing the screens they work ok at 11v, 10.5 with a loss in brightness, so getting 11v with a simple 5v 1 amp reg wont be hard, just lift its middle leg to 6v.

              Or just putting a few in4001's etc in the supply line to 'lose' a few volts.
              Lez, more widely known as flez1966

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              • #8
                so whats the best way to regulate 12V, ive got 3 more screens that draw half amp each?
                all fitted but its having a wobler!

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                • #9
                  eaisest way is buy a 12V reg that will do one or all of your screens. Go to maplins or something and look for one.

                  or you can build a simple one.

                  I am sure there are instructions in the hardware or powersupply sections (this is the for sale section - not the best place to ask stuff).

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                  • #10
                    Yup but most 12v regs can do 1amp etc, but need about 15v in to work, otherwise they drop about 3 volts IIRC.

                    I think best way is to buy a universal laptop supply of about 3amp off ebay, set it to 15-16v, then feed that into 3 12v regulators etc.
                    Lez, more widely known as flez1966

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                    • #11
                      or just run em your PC's psu if you have 1.5A to spare

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                      • #13
                        Originally posted by Scouse Monkey
                        or just run em your PC's psu if you have 1.5A to spare
                        PSU has, inverter hasnt........
                        Lez, more widely known as flez1966

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                        • #14
                          Originally posted by lez
                          PSU has, inverter hasnt........
                          eh? when did inverters come into this?

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                          • #15
                            My psu runs off an inverter, its only a 120w inverter, the pc is pulling 160watts, the inverter has a sweat on.........

                            To through the 3 lilliputs at it would shove it into meltdown, hence the need to run them from a new regulated(ish) 12v source.

                            So, to build 1 new supply, take one 5v low dropout regulator, connect its ground pin to a 6.8v zener so it will output 11.8v.

                            Will need a resistor to help lift the ground pin, say 10k to Vin.

                            should give me voltage all the way down to a Vin of 12.3v then drop off etc.

                            Will post when maplin get the bits here if I cant call to wombwell depot tomorro.
                            Lez, more widely known as flez1966

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