ARCELI 5A Constant Current LED Driver Module Battery Charging Voltage DC-DC 5-32V to 0.8-30V Power Supply Module for Arduino

the folks over at IC station have sent me a dc-to-dc buck power converter this is a step-down DC to DC converters will step down voltages to whatever you preset and also limit current let's take a look at how this one operates and then we're gonna load it up and see how well it performs not bad little unit actually in it's great for things like charging batteries from your solar system serious the backside of the board see as you can see it's got a huge power inductor as this unit will pass 10 amps continuous what it is of course is a down converter you feed it with your input voltage and then you get an output voltage and you can limit the current and the voltage the voltage in the current in this case is set with multi turn set screws I'm going to connect this up we're going to set it to a voltage and put it under a load and we'll test it and there's not a heck of a lot to see on this