作者查詢 / beagle
作者 beagle 在 PTT [ Electronics ] 看板的留言(推文), 共1245則
限定看板:Electronics
看板排序:
全部Bank_Service2154Electronics1245ask453translator170b94902xxx121creditcard111NDHU_Sunny973NTHU_IPE1471NTHU_IPE1571GameDesign59Little-Games43HCU40puzzle39b97902xxx36b98902xxx32AntiVirus25b95902xxx24katncandix216OCU14Storage_Zone14juniorhigh13Physics13Chemistry12Jam12StupidClown12VideoCard12Violation12ask-why11b92902xxx11CD-R10Plant10CSCouncil9KSHS_Talk9Nethood9Psychology029SYSOP9Warfare9homemaker8Network8ArakawaCow7BCC_Midnight7digger7EZsoft7hardware7Jinglun7KuangPing7optical7Touhou7Trace7C_Question6Ladies_Digi6Audiophile5b96902xxx5Digitalhome5EVERYPLANET5FixMyHouse5Folklore5interdreams5Key_Mou_Pad5KLSH5KS96-3015logic5NTUE_SED5politics5rent-exp5Zhongshan5CartoonNet4Chinese4Christianity4Emulator4FJU4HDFS_Bball4historia4HSNU_11104Hunter4Linux4MapleStory4money4NTU-K24Printer_scan4SENIORHIGH4STU4WarCraft4YUGIOH4CFP3CSIECourse3E-appliance3FestivalPark3ForeignEX3Fund3Gintama3HRM3LAW3LordsOfWater3MCU_Talk3MP3-player3Nintendo3NSwitch3NTUF-FUTBOL3Ornithology3PCSH91_3053pharmacist3PttCurrent3PttHistory3PttLifeLaw3PuzzleDragon3Scorpio3sky3Taoism3tax3Windows3Actuary2ASM2b97902HW2BLEACH2Bunco2CGU_MEer2comm_and_RF2cookclub2CSIE_Pool2DailyArticle2e-seller2fashion2feminine_sex2finding2FiremanLife2GoodNews2hair_loss2HandMade2Health2IC-Card2Instant_Mess2Jewelry2KERORO2L_LifeInfo2LCD2Loan2MATLAB2Mix_Match2NCU_Talk2NDS2NIU-ECE94b2NorthAmerica2NSYSU_FG2NSYSU_MIS_972NSYSU_MIS_982NTU-EM932NTUT_MSE2Odoko-juku2Office2Old-Games2Post2PttBug2PttEarnMoney2stationery2STUST2teeth_salon2TVCard2uniform2About_Life1AC_Music1AirForce1b89902xxx1b94902HW1BeautyBody1bicycle-tour1BigBanciao1Biology1Biotech1blind_pc1C_Chat1CATCH1Chen_C_H1Childhood1ChungLi1consumer1CS_TEACHER1CSCamp20021CSIE_TTENNIS1CSIE_Volley1CSonline1dance1Delivery1digitalk1DirectSales1Docchi1DoReMi1DragonQuest1Drink1DV1ECClab1Ecophilia1EzHotKey1fastfood1Fix-Network1fruits1gift1Google1Gossiping1HatandCap1HomeTeach1HsinTien1ID_Multi1iOS1Jolin1Juuni-Kokki1Koei1KOTDFansClub1KS98-3011kualab1Lab7201Lefty1Leo1Lonely1LTK1Mancare1Master_D1Math1MCUBA891Medicine1Miru1mobilesales1music1Navigation1NCHU-FS991NCKU_DAA-991NCTU-CSIE971NCTU_EECS981NCTU_IIM971NCTU_IIM981NetSecurity1NightLife1NIHONGO1NTHU-MSE111NTUCivilism1NTUJapan1NTUND981NTUST_CSB911OIT_main1ONE_PIECE1Option1painting1Pet_Get1PH-sea1Pharmacy1PHP1Policy1Programming1PSY1Reptile1SCU_LawFB1share1SMHS91_3061SO1specialman1TaichungCont1TheSims1THU_Talk1TigerBlue1Toy1TY_Research1VoIP1Volunteer1Wikipedia1Wine1winsock1YAYA1yoga1YZU_Talk1Zhongzheng1<< 收起看板(270)
1F推:555 的輸出不能直接驅動 LED, 要再做功率放大...04/23 09:11
1F推:重灌英文版 Windows XP 吧04/15 17:28
5F推:跳線? 可以用 RS-232 跳線, 商店裡有時會標 "NULL Modem"04/15 09:59
10F推:那個裡面有 IC, 似乎是模擬隨身碟(mass storage)的樣子...04/15 14:41
11F→:並不是把 D+ 和 D- 兩條線對調, USB 不是這樣的東西...04/15 14:42
1F→:第 #16nKi2tt 篇可以參考看看04/11 19:35
2F推:用一顆 LM317 降壓也可以... 吧?04/10 22:43
1F→:叫你老闆別鬧了... USB 開發成本之高...04/08 17:43
2F→:買個 USB to UART 轉接板算是最簡單的 drop-in solution04/08 17:43
3F推:其實我也蠻有興趣的, 不過有USB功能的MCU很難入手...04/08 17:47
1F推:Rsc 改用 0 Ohm (就是拿掉不要啦)04/08 09:14
2F→:照你的設計, Rsc 用 3 Ohm 的確會浪費不少電能...04/08 09:20
5F→:是限流用, 可是通常只接個 0.2 或 0.3 ...04/08 17:36
6F→:這麼小的電阻很難買到吧! 不接只是負載短路時可能會燒壞...04/08 17:38
7F→:如果不放心就用四顆 1 Ohm 並聯吧, 1 Ohm 還算買得到...04/08 17:40
4F→:郵購怎麼樣?電阻型電感我也用過,效率有80%算勉強能接受...04/07 13:46
5F→:負載吃不了多少,會不會是設計上的限制?04/07 13:48
6F→:如果你的電路負載很重,MC34063可以外掛BJT當switch04/07 13:49
7F→:台北光華商場的源達和今華都有賣鐵芯甜甜圈電感...04/07 13:50
12F推:我從 3.0V 升到 12V (我也不知道為什麼 3.0V 也行)04/07 15:40
13F→:理論上輸入輸出電壓相差越多, 效率應該要越好才對...04/07 15:47
2F推:我爸有買一台, 聽多了會覺得很囉唆...04/03 15:50
30F噓:貼這幹什麼, 那是騙人的啦...04/01 17:31
31F→:對喔, 今天愚人節04/01 17:31
32F推:我是說那高中生騙人,報導是真的有報,但記者內容也寫錯不少04/01 17:39
33F→:我是覺得這行徑頗惡劣...04/01 17:40