Involvement:General (knows how to use it) - Ownership:1 week to 1 month
the price is very cheap, and great quality, didn't have any serious cons, increases and lowers voltage very steadily, used it to control the voltage coming from a 24v power supply to a wiper motor, worked great.
there is one small con, is that you need to turn the bolt a lot to increase and decrease the voltage
it would be great if dx.com would bring us a product like this one with a display of the voltages because i had to use my multimeter to see what voltage is coming out and at the same time spin the bolt.
i highly recommend it if you want a step down dc-dc, and you don't need a display of the voltage coming out.
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