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power supply board Customers Reviews

  • Perfect breadboard powersupply

    posted by tnvd

    The board has two modes of power input. Through USB and through a DC barrel socket. There is a green LED to indicate the presence of power, and a latching switch to control the power to the board.Input voltage to be between 6.5~12V, or USB powered (5V). If you wish to use it to it's maximum capability you will need to remain in that range. This is a non-adjustable power supply model and the output voltages are fixed to 5V and 3.3V which is good enough for most applications. The maximum output current is stated as 700mA.Jumper pins are used for selecting the voltage levels to the breadboard.. You can choose between 5V, Off, and 3.3. There are two sets of jumper selectors for each side of the breadboard power rails. Hence you can have any combination of voltages on either rail. There are also header pins for tapping off voltages, through a cable or jumper wires.
    The MOST used breadboard powersupply.Get one !
    Excellent powersupply.The circuit itself is based on a pair of AMS1117 voltage regulators by Advanced Monolithic Systems. One is used for creating a 3.3V rail whilst the other for creating the 5V rail. These are actually quite a good make of components to be found in a SOT-223 package. Their datasheet states that this series can provide a maximum output current of 1A. The absolute maximum voltage rating is 15V at the input. Obviously you should not use these levels as this is the component rating.
  • Great little gadget

    posted by mtrcek

    The board is great. Powerful enough, it is small and compact switch mode power supply. I have used it as a LED stripe driver (for 1m of LED stripe) and as small audio system power supply. For the last one - it is very quiet, the EMI circuit does it's job. The holes make it easy to install.
    A very good and usefull SMPS. I really recommend it.
  • Not very efficient, but versatile

    posted by amigaexpert

    * Wide output range* Mount holes* Relatively small
    Find the desired resistance, desolder the potentiometer, add fixed resistance. This will increase stability & reliability.Also take care when screwing these to any conducting surface/material.And remember to add an mechanical switch.
    If you need more current then the small USB "charger"s can supply, or if 5V isn't enough for your use, then this or any other of the LM2577 adapters will definitely do the trick.But they have limits if the lithium cell is depleted, higher output voltages and/or currents may be problematic.This one is better for 2-cell applications.
  • Really small!

    posted by Polonium

    This is a really small switching power supply!!Line side has a varistor, thus some kind of surge suppression is provided.Output voltage: 5.10V (no load)When no load is attached, a witched power supply draws about NOTHING current. Ideal green replacement for those old bulky transformers.
    Still didn't measure ripple at maximum load (will put results soon), but according the specs it is around 150mV (according the specs it is 150 mW, but that is probabely a bug...)
    Nice, cheap and small switching power supply.Not worth making one youself......
  • MB102 Breadboard Power Supply Module

    posted by oozihemp

    Great power supply! -Comes with 2 individual channels, that can be set to different voltages.-Comes with a ON/OFF switch and a LED indicator.-Works with a bunch of power input options, surch as USB, 6V AA battery pack, 9V battery, 8.4V Li-Ion Battery pack.-Pretty decent Regulated 3.3V and 5V line, with just 2% of voltage drop.-Nice current output, 630mA usint a Li-Ion battery pack-Easy jump system to set the voltage or to turn the channel off-Easy to work with
    Its a great and well built power supply for small projects that needs a regulated power supply, works well with arduino or just powering normal DIY electronic project.
    It is a must buy product!


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