在没带负载时。可以通过调整滑动变阻器输出37-55V的电压,加50W20Ω的负载电阻时,电压瞬间掉到27V,求大佬帮帮!
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Hi
从描述看,初步认为是变压器问题,请问你的变压器是自己绕的,还是厂商提供的?