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supply module Customers Reviews

  • small dc-dc converter

    posted by nuralist

    The device was bought for powering Cree xml diode to limit current. The device have Voltage and Current regulation. My diode takes 3 ampers of current so I had to use little radiator with a thermal grease on the LM microchip, without it temperature was more than 100 C and LM chip protection had tripped. After i've used heat sink everythink became OK)
    informative specification
    good deal
  • 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.
    None
    A very good and usefull SMPS. I really recommend it.
  • VMP3111

    posted by sohman

    - easy to solder- simple output voltage selection with one resistor- high efficiency (in the optimal current range)- reasonable price- very few external components required
    The efficiency seems to be highest (over 90%) when the output current is about 700 mA
    If you have an application that needs a regulated power supply between 1 and 3.3 V with a current requirement of around 700 mA and ease of use and price is more important to you than circuit board area you will be very happy with this device. It does work for lower and higher currents too but the efficiency is lower in those scenarios.
  • 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......
  • 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.

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