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View Full Discussion I've seen a couple of comments stressing the drain caused by the electronic switch. Did someone actuelly measure that it happens or is that mainly repeating what's an issue in other flashlights? I'm asking since the manufacturer of this very flashlight tailswitch states "The patented zero-power-consumption electronic metallic tail switch featuring anti-abrasion (Patent No. 201520922098.6) promises a clear and precise feeling" and the patent (including a PDF showing the circuit) is available here: https://www.google.com/patents/CN205105440U?cl=en&hl=de . Can someone understand and explain the efficiency of that circuit?
"For the skilled artisan, the utility model is clearly not limited to the details of an exemplary embodiment, but without departing from the spirit of the utility model or essential characteristics case, W other specific forms of the utility new. "
It's the alphabet soup type of patent... It looks like they patented the word "zero-power," but the rest of the entire text is them explaining that "zero-power," doesn't mean zero power...
Hmmm, I thought they were explaining that it means "not really zero, but so little that it does not noticeably reduce use time" i.e. the power loss through the switch is so tiny that it is no factor. No?