10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A

I use these to lower voltage and power consumption from the propane solenoid switch on our camper. Lowers amp consumption from 21 amp/ day to 8, and solenoid does not get burning hot. I use 5 volts. I must have given or installed dozens of these things to camper friends.

Great product. I have purchased over 100 of these and had no DOA units. I adjust to 6V and 16V for product they are used in and they perform well in the field. I add conformal coating and silicone adhesive around the pot for extra vibration help in a rough application. I draw about 750mA max from them, average probably 350mA .

Llego muy rápido y funcionan a la perfección, muy buena atención.

I read some reviewers complain that several of the regulators they received were defective, or couldn't be adjusted. So when I received mine, I tested all 10 right away, adjusting them all down to 3.3V from a 12V input. I had one that had an extra sensitive pot and was somewhat difficult to adjust accurately, but I was able to do it, just an extra few seconds of experimenting with turns on the pot. From a 12V DC input, I had little to no trouble getting the 5V and 3.3V output supplies I was wanting. I didn't try a higher input voltage than 12V. I think some of the bad reviews are people using 20V or 24V. Maybe I got lucky and received all 10 good ones. Or maybe they don't work as well with voltages higher than 12V. But I'm happy and would buy again if needed.

Works perfect. I use this to step-down the voltage from a Li-Ion cell (3.6V) to 1.5V for a PRC-6 filament power supply. No problem at all. Efficiency is great, and I could not find any hash noise that it might have produced. Price is - well, you wonder how can they make if for that money? I do not understand the negative reviews at all. If you can't get this to work, you might want to start looking for a different hobby.