Everyone wants a bench energy provide, and rolling your individual has virtually turn out to be a ceremony of passage for hackers. For a very long time, the platform of selection for such builds gave the impression to be the ATX energy provide from a pc. While we definitely nonetheless see these builds, quite a lot of the motion has switched to these low cost eBay programmable DC-DC converters, with their particolored digital shows.
This hybrid bench and portable power supply is an efficient instance of what could be achieved with these modules, and appears prefer it may change into a helpful device. [Luke] centered his construct across the DPS3003, a relentless present and fixed voltage buck converter that may take as much as 40-VDC enter and outputs as much as 32 volts at three amps. In bench mode, the programmable module is fed from a mains-powered 24-volt switching provide. For transportable work, an 18-volt battery from a Makita drill slips right into a 3D-printed adapter on the highest of the case. The printed half accommodates a industrial terminal [Luke] scored on eBay, however we’d guess all the factor might be 3D printed. And no drawback for those who change energy device manufacturers — simply print one other adapter.
Those little eBay energy provide modules have confirmed to be an enabling expertise, a minimum of judging by the variety of intelligent methods we’ve seen them used currently. From this combination bench PSU and soldering iron supply to a portable PSU perched atop a battery, this stuff are in every single place. Heck, you possibly can even reflash the firmware and make them do your bidding.
[by way of Dangerous Prototypes]