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Great product! Arrived on time before I was expecting it. Small, and will fit into almost any type of circuit housing easy to adjust voltage accurately using a volt meter. Also cheap and economical and reliable. Cheaper to buy than make it yourself
Verified purchase: Yes | Condition: New
I had to replace the LM317, as well as the potentiometer. Once good components were in it it works great, but to have two components fail from the get go isn’t great. It was cheap, and the LM317 was probably damaged during shipping, but for the cost of replacing both components I should have paid a bit more anyway.
Verified purchase: Yes | Condition: New
I had a project where I needed to operate at a lower input voltage on the out put side. This product does exactly that and with great accuracy. In fact the project was to light up my model train passenger cars and convert the track voltage to a lower voltage for the LED's. Worked perfectly... Martin Derouin
Verified purchase: Yes | Condition: New
Complete it with proper filters on input and output, screen it and get a good versatile and efficient power supply. Without filtering will be a problem due switching noise. It overwhelmed my fm radio mahing far station lost in white noise, simmilar with band noise. Common fact at cheap switching supplies.
Verified purchase: Yes | Condition: New
I use them with 18650 battery holders, like a portable switching powersupply. My outdoor pizza oven requires 2 D cells for the rotisserie part. With this, I can use 3 18650 lithium ion cells to replace the D cells. Just adjust the 12.6v to 3.0V. Who cares if I leave it on. Just swap out the cells and recharge them. No need to buy expensive D cells that I will probably leave on overnight.
Verified purchase: Yes | Condition: New