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DIY a PSU for M-DAC
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hi great John,i try hard to sign an account to consult you a plan.
i designed a PSU for M-dac and trying to DIY it,
i use 4 15V Li battery (series by 4 3.7V sanyo 18650 cells) for M-dac,two for digital,two for analogue,when i tune on PSU,the PSU switch to Li battery supply,when tune off ,the PSU switch to charge,and it cut off 220V power supply by relay automaticly when the Li battery is full.
i had calculated that the M-dac is less than 15W, if I use 10AH Li battery it can last 10 hours, a 10AH Li battery is not too expensive and it's small ,also the technology of Li battery is mature,why not use pure DC battery power?
what's your opinion about it John? |
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