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step module Customers Reviews

  • power booster dc-dc 12 V in 13=34.43V out

    posted by lasermanathome

    one of the finest boosters I know, I have used several of these for different applications.It works fine as fast start-help for cars with empty batteries, in that case I have a 12V 17AH gel-lead battery , connected to this booster and make 14.4 VDC (the voltage the generator of the car itselve delivers) and within a few minutes , the car starts without troubles.Because is is very cold here these days, below minus 8 centigrades, the weak batteries have too less power to start the car, the combination of the 17AH gelbattery and this booster gives just what the weak battery needs to help it out of its "hibernation" and this combination works far better than the use of only the 12 V 17AH gelbattery, because the few Volts extra forces the carbattery to wake up and do his job.Also this booster is very uasble for 20-100W powerleds wich need 30-35VDC out of 12 VThe 100 Watt Led turns the night to day and can be supplied by the car battery.
    A very smal case made of aluminum can protect and cool the booster, correctly build in, the case has not to be connected to earth, if desired.A CC(current controll/limiter) would be fine, a fuse does not protect the booster, so a temperature shut off would also be handy.Within its parameters this booster works very good but take controll of the drawn current, when used for higher voltage and a lot of Amps, this booster works perfect untill it is killed by the produced heat
    A very nice booster wich needs some extra attention and protection, it works untill it blows up,no limiters against mans stupdities are build in as far as my experience reach.So take precautions yourselve otherwise you can buy a new one (like I did).TThis unit is -like most switched powersupplies-difficult and expensive to repair, better buy a new one and if you -like me- do a lot of experiments take some of these in stock.
  • I was surprised that it works.

    posted by jirka80

    A relatively large voltage range. Increasing the drive worked on the first try.
    When the need for constant output voltage for a wide variety of input values??, the product seemed ideal. Very simple to set up with great sensitivity. Easy wiring. With a bit of caution must operate on the first circuit.
    price / value
  • 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....
  • powerbooster with CURRENT CONTROLL

    posted by lasermanathome

    This SKU delivers exactly that what other of these kind of voltageboosters do not have, currentcontroll!!So you don't have to use ballastresistors or other currentlimiting measures.Leds do have the habit to alter their resistance when they are in conducting state (like fluorescentbulbs but less dramatical)So this booster can drive powerleds without other components when cooling is OK!!
    Can be used to build massive ampifiers for carsAlso suitable for RC when higher voltages are used.When used 3 pieces parallel (with diodes) you can even feed an electric bike with one traction battery (12/24 VDC) USE an antiparraleldiode for the motor!!
    For inventors this is a very handy component with much (hidden) potential.
  • Good powersupply with some modifications

    posted by Dreamman65

    Nice Small PCB which can be used to chop down power supplies. Has 4 holes drilled into the PCB so you can mount it with M3 screws.For this amount of money you can't make it yourself.
    Haven't used it with large currents, so don't know when it gets to hot without a proper heatsink.
    Good powersupply, i'm using it to power a Laser Driver. But i rather spend 0.30 more to buy the one with the potentiometer fitted already.

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