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Reviews (2)
23 Nov, 2021
Good value for money, exactly as described.
These are great value, can't argue with the quality for the price.
In case it helps others: the screw thread is about 4.2mm and 18.7mm long. and head is about 8mm diameter (on the ones I received at least).
16 Nov, 2016
Good boost converter with convenient controls, but check for manufacture quality issues.
This takes an input voltage from 6V~40V and boosts it up to an output voltage of 8V~80V. Maximum input current is 15A and maximum output current 10A. Note that the output voltage must always be greater than or equal to the input (it can only step up voltage).
The LED display and push buttons can be used to set the output voltage, and the output current limit. Therefore, you can use this as a constant current or constant voltage source.
My unit had a fault, due to poor quality soldering, which I was able to fix. When I first powered it on with the output voltage set at 20V, the voltage continued to rise way past the voltage limit I had set, right up to about 80V then the display went blank and reset. On closer inspection of the PCB, I found there was a large blob of solder on the underside of the large PCB, which was bridging the top-right 3 pins for the small control PCB. Two of these are ground, and I guess the other may be a voltage sense input to the CPU. After removing this solder bridge, the unit then worked correctly. There's another small 8 pin SMD chip near D2 which also had a solder blob across 3 pins (I left this alone as I couldn't decide if it was intended to be like that...) On this evidence, I would recommend inspecting the PCB yourself before powering the unit on for the first time!
Anyway, now it's working fine, and I can see this will be a very handy little power supply for the toolbox.