Results 1 to 6 of 6

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Registered User
    Join Date: Apr:2004
    Location: MainaTown
    Posts: 160

    USB çà çàðÿäíî ïðè èçèñêâàíèÿ çà 2À

    Åäíî GPS óñòðîéñòâî èìà âõîä 5v, 2A. Èìà ëè îò êàêâî äà ñå ïðèòåñíÿâàì, àêî ãî çàðåæäàì ïðåç USB, ïðè ïîëîæåíèå ÷å ìàêñèìàëíèÿ òîê íà óñá-òî å 0.5À ?

  2. #2
    Registered User nickarsow's Avatar
    Join Date: Apr:2009
    Location: Ñìîëÿí
    Posts: 1,849
    Drecky,
    Î÷åðòàâàò ñå 2 âàðèàíòà:
    1. Ïðåöàêâàø USB - òî , àêî íÿìà çàùèòà;
    2. Åëåêòðîíèêàòà çà çàðÿä íå ðàáîòè äîáðå èëè èçîáùî íå ðàáîòè ( çàðÿäíîòî âúòðå â GPS-à å íàïðàâåíî ñúñ ñïåöèàëèçèðàí ÷èï , êîéòî ìîæå äà íå ðàáîòè , àêî íå ìó îñèãóðèø íåîáõîäèìèÿ òîê ). Òîâà çàâèñè îò âãðàäåíèÿ LiIon àêóìóëàòîð , êîéòî ñïîðåä êàïàöèòåòà ñè èçèñêâà îïðåäåëåí çàðÿäåí òîê è ñïåöèàëíà õàðàêòåðèñòèêà íà çàðÿäà. Ñàìî õèïîòåòè÷íî , 0,5À ìîãàò è äà ñòèãíàò çà çàðÿäà , àêî íèùî äðóãî âúòðå íå êîíñóìèðà òîöè.
    Òè ðåøàâàø.
    Last edited by nickarsow; 12th November 2009 at 16:51.

  3. #3
    Moderator Ilian359's Avatar
    Join Date: Dec:2002
    Location: Ñîôèÿ
    Posts: 11,603
    Èëè USB-òî ùå èçêëþ÷è (çàùîòî ñè èìà òîêîâà çàùèòà), èëè âñè÷êî ùå ñè ðàáîòè êàêòî òðÿáâà. Åäèíñòâåíî áàòåðèÿòà íà GPS-à ùå ñå çàðåæäà ïî-áàâíî.
    Íèêîãà íå å êúñíî äà ñòàíåø çà ðåçèë!

  4. #4
    Registered User ined's Avatar
    Join Date: Nov:2006
    Location: Varna
    Posts: 1,078
    Ìàêñèìàëíèÿ òîê íà USB-òî íå å 0.5À. Â ñïåöèôèêàöèèòå ïèøå ñëåäíîòî:
    In Battery Charging Specification[33], new powering modes are added to the USB specification. A host or hub Charging Downstream Port can supply a maximum of 1.5 A when communicating at low-speed or full-speed, a maximum of 900 mA when communicating at high-speed, and as much current as the connector will safely handle when no communication is taking place; USB 2.0 standard-A connectors are rated at 1500 mA by default. A Dedicated Charging Port can supply a maximum of 1.8 A of current at 5.25 V. A portable device can draw up to 1.8 A from a Dedicated Charging Port. The Dedicated Charging Port shorts the D+ and D- pins with a resistance of at most 200Ω. The short disables data transfer, but allows devices to detect the Dedicated Charging Port and allows very simple, high current chargers to be manufactured. The increased current (faster, 9W charging) will occur once both the host/hub and devices support the new charging specification.
    ASRock B85 Pro4, Pentium G3240, DD3 8GB/1333MHz, 120GB SSD + 1TB + 640GB HDD
    Gigabyte GV-R657OC-1GI, CM B500, ASUS 24B1S1, LCD SAMSUNG SM931BW, ÌÅ173Õ

  5. #5
    Registered User nickarsow's Avatar
    Join Date: Apr:2009
    Location: Ñìîëÿí
    Posts: 1,849
    Drecky,
    Íàé-ëåñíî å äà ïîãëåäíåø äúííàòà ïëàòêà . Òúðñèø çàä USB ñúåäèíèòåëèòå êîìïîíåíò ñ ðàçìåðè îêîëî 3õ5ìì â çåëåí èëè ÷åðåí öâÿò. Âúðõó íåãî èìà îìåãà îáðàçíà çîíà. Íà íåãî ïèøå 0,5À èëè 1À èëè 2À. Àêî ïèøå 2À - äàâàé ñìåëî.
    Ïî ìîåòî ñêðîìíî ìíåíèå USB 2.0 äàâà äî 500ìÀ , çà USB 3.0 íå ñúì ñèãóðåí , ìîæå äà å è ïîâå÷å.
    Last edited by nickarsow; 12th November 2009 at 18:56.

  6. #6
    Registered User
    Join Date: Apr:2004
    Location: MainaTown
    Posts: 160
    Çíà÷è áàòåðèÿòà ìó áåøå ïàäíàëà íà 100% è êàòî ãî âêëþ÷èõ â þñá-òî ñå ïóñíà è çàïî÷íà äà ñè ðàáîòè è ñàòåëèòèòå ñè íàìåðè è áàòåðèÿòà òðúãíà äà çàðåæäà.. âñè÷êî 6. Ïîñëå ãî ñïðÿõ è ãî îñòàâèõ äà ñå çàðåæäà êàêòî å sut down, äàíî íå ìó ñå ïðåöôàêà íåùî.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Copyright © 1999-2011 Õàðäóåð ÁÃ. Âúçìîæíî å ñúäúðæàíèåòî íà òàçè ñòðàíèöà äà å îáåêò íà àâòîðñêè ïðàâà.
iskamPC.com | mobility.BG | Bloody's Techblog | Êðèïòîâàëóòè è ìàéíèíã | 3D Vision Blog | Ìàãàçèí çà åëåêòðîííè öèãàðè