[2 Pack] High-Power DC-DC Buck Converter with LED Display - Step-Down Voltage Regulator 4-38V to 1.25-36V - 5A Module Review

Two piece buck converters (buck regulators) were exactly what I was looking for and at a reasonable price. They arrived very quickly. I use them to power auxiliary lighting and other model train accessories. Ideal!

I wish you would buy them, you know what they are. It calibrates, stays within voltage limits, and doesn't overheat. However, the cooler does not fit between the parts. It tends to touch the coil on one side or other goodies on the other. It doesn't seem to matter much, but on a relocation project I would be concerned about the protective coating on windings wearing out.

I bought these to use in a project to step down the voltage of a 20v power tool battery to 13.5v to use as a portable power source to use. I found the onboard display very helpful in setting up my project. Eliminates the need for an external counter for tuning. I used the Fluke DVM to test for accuracy and it turned out to be accurate. I also loaded the device with 5 amps and it worked as advertised. Just remember to attach the included heatsink when using it at current limits. I have used…

I have some old laptop chargers lying around. Depending on the brand and model, these are all possible DC output voltages (18.5, 19.5, 20, etc.). However, most electronic devices these days run on either 12 or 5 volts. These little guys helped me convert them into good power supplies for my projects. I use them for situations where I'm developing/experimenting. Once I'm happy with my project, I replace them with cheaper alternatives (ones without a display). However, one of the two had a…