One power board, one USB interface, one R2R decoder board, three boards can complete the DACDouble power transformer, please tell him to use four-wire outputDouble 12v and single 6v are most suitable, too high will be inappropriateBoard size: 80*75mmOutput 3 groupsOne set: 5v~20v adjustableTwo groups: 5v~20v adjustableOne set and two sets can form ± dual power output, but it must be a transformer with four-wire outputThree groups: 3.3v~5v adjustableWith output short-circuit protection and overheating protection function, noise ripple 40uv, maximum output current 2AWhen outputting dual 15v, please use a dual 12v output transformerWhen outputting 5v, please use a 6v output transformer, so that the input and output voltage difference is not large, and the chip will not be protected from overheating