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dc to dc step down

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dc to dc step down Customers Reviews

  • Nice driver for 10W (3x3) LED

    posted by dielomat

    It does what description says...using 12Volt source i measured 0,76A current with a 10W LED (3x3 type ) - thats almost exactly 9W.Driver gets warm, but ist still touchable without burning fingers after 1 hour running.
    i think in warm environment it will be better to use a cooling plate.maybe tearing off the rectifier would give lower temps and higher efficiency
    The driver is usable for 10w LED like SKU: 39957 Ill sure order some more soon.
  • Nice stepdown DC converter

    posted by lasermanathome

    A small PC wich has the advantage to set fixed voltages wich become handy in Ohm-resistant situation if you want to get a good controll over the current.The dipswitch works good if you know how to handle it.
    This last point can be solved by giving a firm overvoltage (within the range of the converter)Because the energyconversion is high efficient, these units are much better than the 78XX (or 79XX)wich converts overvoltage only in thermal enery (they become hot )These kind of converters do normaly not use extra cooling (convection is enough) unless the differece beween input and output volage is big and/or the current, drawn from the converter reacht to the maximum, it is no good idea to rely on the thermal/current protection, other parts or instability can be damaged, capacators (elco's) have a much shorter shelflife when they heat up, their value changes above the limits and they can ruin anythingin line of it....
    Not the cheapest and not the smallest DX converter but certainly one of the most reliable....
  • Exactly what I wanted

    posted by mythic1

    -Easy to use even for novices-Wires are ready to solder-2 ears to get it fixed tight-15w output power (5V, 3A), sufficient to power a dash camera, etc.-Quality feel-All the details you need are written on product-Very well sealed against dirt or dust-Small enough to hide it under the dash
    -Ideal converter with sufficient power output. Ideal for powering any gadget for your car
    -I recommend it. Other products around, for the same price, you get maximum 10w output power.
  • DC Voltage Regulator

    posted by NektariosSp

    Great piece. Quite useful. Not possible to build one, using ordinary 7805, cables and a USB socket. Works fine, but I have not tested it running to the current limits. Great for installation in cars, DIY projects and of course, for connecting any USB powered device.
    I have no other thoughts.
    Good to buy. Nothing special needed for installation.
  • Excelent step-down transformer

    posted by psergiu

    SmallRelativelly cheapWide range of input voltagesMounting holes
    I use mine to power a Raspberry Pi, a USB hub and a 2.5" HDD from a 10V power brick.Very stable voltage:- 5.12 V with no load- 5.08 V with Hub + Raspberry Pi- 5.07 V with Hub + Raspberry Pi + HDD (5.06 V during HDD spinup)
    Excelent step-down transformer, reccomended for Raspberry Pi projects when powering from 9-24V (12V car use or repurposing older power bricks)

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