高效率的军用小功率逆变电源40W12V2.13A你相信吗?

十多年前闹来的,可带40W电灯炮,刚刚测了一下,带40W电灯炮12v供电,电流才2A左右, 输出电压250V 空载280V效率有这么高吗?

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