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老外CFP论坛的selfbuilt曾就非恒流电路问过厂家:
"Of course, a lot of that has to do with the fact that the Niwalker lights are direct-drive on all modes. I have also queried this with Niwalker, and they respond that this is intentional: the MM15 in particular is not designed to have flat regulation, as this would likely result in overheating issues. They actually experimented with a constant-current circuit, but found the light got too hot on L5 and L6. In contrast, they report the light was always comfortable to use by hand outdoors when a direct-drive circuit was installed. Further, they point out that with this circuit in place, there is no visible step down required – and you will get a lot more runtime than with constant output."
厂家的回覆大意是恒流电路会导致过热问题,用现时的电路没有明显的降档,续航时间比恒流电路长。
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