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이유는 단순하게도 X50V의 충전에 필요한 전압이 5.4V 이기 때문입니다. 태@전기의 배터리홀더는 처음엔 약간 충전되는 듯하다가 잘 안되고, 충전이 제대로 안 된 상태에선, 오히려 액시미의 전기를 빨아먹습니다. 액심사이트의 글을 읽어보니 USB싱크케이블들도 이런 문제가 있는 듯 합니다. (자세히 읽어보질 않았지만, 이건 컴퓨터, USB 허브에 따라 또 다른 듯 합니다.) 전문 : http://www.aximsite.com/boards/showthread.php?t=64935&highlight=connector+pin ----------------------------------------------------------------------- Tuba씨의 글입니다. OK, I finally understand all this. Only had to read this thread about 20 times. Here’s my understanding, using layman’s terms and simple analogy: The input slot on the Dell Axim has 2 pins to feed it power – 1 from your computer’s USB port (at +5 v) and 1 from the power cable (at +5.4v) that plugs into the wall outlet: Cradle/Power Cable Axim’s +5 v pin <== cradle’s +5 v pin <== USB cable (output +5 v) Axim’s +5.4v pin <== cradle’s +5.4v pin<== Power cable (output +5.4v) The cradle is setup this way and the Axim is smart. If you cradle the Axim without the power plug, it will only draw power from the USB port when the Axim is off. It knows that while the Axim is on, the +5 v from the USB doesn’t leave enough extra juice to charge the battery, except perhaps for a trickle charge. If the power cable is used, it knows it can operate and charge off the 5.4v of that line The problem is third party USB sync/charge cables don’t use an external power cable. Instead, they channel any and all power from the USB port. The mistake is that they crossed the lead and feed the USB power (at +5 v max.) into a receptacle designed to eat +5.4v. Like so: 3rd Party USB sync/charge cable Axim’s +5 v pin <== EMPTY (no cable pin, no power cable) Axim’s +5.4v pin <== cable’s +5 v pin <== USB cable (output +5 v) The Axim, when using a 3rd Party USB sync/charge cable, has a +5.4v appetite (pin) but only gets fed +5 v diet. If it sucks too hard, by needing juice to both charge the battery and run the Axim, it may zap the computer’s USB port or not eat enough to be full (i.e., charge the battery). The Axim doesn’t know to only draw power from this cable when it is off, as with the cradle and its two pins. It expects an ample (+5.4v) supply because it is coming in on the pin designated for the power cable. Am I correct in my understanding? -------------------------------------------------------------------------------- PS. 도배가 되어버렸는데 포인트모을려고 하는 거 아닙니다. 500점 넘은지는 오래 되었어요. |
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