v> 目前最常見的藍牙天線有偶極天線(dipole antenna),倒 F 型天線(planar inverted F anternna)、曲流線型天線(meander line antenna)、微小型陶瓷天線(ceramic antenna)、液晶 聚合體天線(lcp)和棒狀天線(2.4G 頻率專用)等。由于這些具有近似全向性的輻射場型 以及結構簡單、制作成本低的優點,所以非常適合嵌入藍牙技術裝置使用。
上傳時間: 2022-03-11
上傳用戶:
LED燈封裝Altium Designer AD PCB封裝庫2D3D元件庫文件PCB Library : LED.PcbLibDate : 2020/12/29Time : 16:50:29Component Count : 49Component Name-----------------------------------------------LED 1W/3WLED 1W/3W-WLED 3mm-2PLED 3MM-BLED 3MM-GLED 3MM-RLED 3MM-WLED 3MM-YLED 3MM-YCLED 5MM-BLED 5MM-GLED 5MM-RLED 5MM-WLED 5MM-YLED 5MM-YCLED 0603-RGLED 0603BLED 0603GLED 0603RLED 0603WLED 0603YLED 0805BLED 0805GLED 0805RLED 0805WLED 0805YLED 1206BLED 1206GLED 1206RLED 1206WLED 1206YLED 3528-2PinLED 3528-4PinLED 5050LED 5630LED 5730-VLED F234-BLED F234-GLED F234-RLED F234-WLED F234-YLED F257-BLED F257-GLED F257-RLED F257-WLED F257-YLED SH-5MM-WLED SH-8MMLED SH-8MM-W
標簽: led 封裝 altium designer pcb
上傳時間: 2022-03-11
上傳用戶:
帶有PPS電源適配器的60 W USB PD 3.0具有PowiGaN的InnoSwitch3-Pro(INN3379C-H302); MinE-CAP(MIN1072M);威盛Labs VP302控制器輸入:90 VAC – 265 VAC可變輸出:5 V / 3 A; 9 V / 3 A; 15 V / 3 A; 20 V / 3 APPS輸出:3.3 V – 21 V / 3 A
上傳時間: 2022-03-24
上傳用戶:
近距電能傳輸——高效安全近距電能傳輸一般基于電磁感應原理進行。在此技術基礎上,當接收器鄰近發射器時才會進行電能傳輸。電磁感應技術的歷史長達百年,多年米一直應用于各類電子產品中—如此普及全因其簡單、高效以及安全技術概覽以下將為你簡要介紹無線電能傳輸技術。System Overview(Communication)Receiver sends messagesTo provide control information to the transmitterBy load modulation on the power signaTransmitter receives messagesTo receive control information frorn the recelverBy de-modulation of the reflected loadPower Pick Up( Receiver)Secondary coil (L Serial resonance capacitor (C) for efficient power transfer Parallel resonance capacitor(C, )for detection purposes Rectifier: full bridge(diode, or switched)+ capacitor Output switch for(dis)connecting the loadReceiver modulates load by Switching modulation resistor(R,n),or Switching modulation capacitor(Ca)Transmitter de-modulates reflected load by Sensing pnmary coil curent (p)and/o Sensing primary coil voltage (V,
上傳時間: 2022-03-31
上傳用戶:
使用InnoSwitch3-Pro PowiGaN和MinE-CAP的3.3 W-21 V PPS電源的65 W USB PD 3.0
標簽: InnoSwitch3-Pro PowiGaN PPS電源
上傳時間: 2022-04-02
上傳用戶:kingwide
為設計高效率、低損耗的PFC電路,本文基于UCC28019進行電路設計。以UCC28019輸出的PWM波形來控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲存和釋放能量,最后實現在輸入AC20V~24V電壓情況下穩定輸出DC38V。測試結果表明,系統實現效率為95%左右,電壓調整率小于1%,電源功率因數0.99。交流輸入電壓為19.0-25.8 V時,輸出直流電壓穩定性較好,電感無明顯嘯叫且紋波小,具有一定的帶負載能力和實用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
上傳時間: 2022-04-03
上傳用戶:
S32K1xx Series Reference Manual 用戶手冊--2029頁 Supports S32K116, S32K118, S32K142, S32K144, S32K146, and S32K148S32K是一款符合AEC-Q100規范、基于32位ARM Cortex-M4F和Cortex-M0+內核的MCU,適用于通用汽車和高可靠性工業應用。The S32K1xx product series further extends the highly scalable portfolio of Arm? Cortex?-M0+/M4F MCUs in the automotive industry. It builds on the legacy of the KEA series, while introducing higher memory options alongside a richer peripheral set extending capability into a variety of automotive applications. With a 2.70–5.5 V supply and focus on automotive environment robustness, the S32K product series devices are well suited to a wide range of applications in electrically harsh environments, and are optimized for cost-sensitive applications offering low pin-count options. The S32K product series offers a broad range of memory, peripherals, and package options. It shares common peripherals and pin counts, allowing developers to migrate easily within an MCU family or among the MCU families to take advantage of more memory or feature integration. This scalability allows developers to use the S32K product series as the standard for their end product platforms, maximizing hardware and software reuse and reducing time to market
標簽: S32K116 S32K118 S32K142 S32K144
上傳時間: 2022-04-16
上傳用戶:jason_vip1
《C專家編程》是2008年01月人民郵電出版社出版的圖書,作者是(美)林登(LinDen,P.V.D)。
標簽: C語言
上傳時間: 2022-04-19
上傳用戶:
VbyOne_Spec_V1.4,4k2k顯示技術,顯示開發者必備良藥
標簽: V-by-One
上傳時間: 2022-04-21
上傳用戶:ttalli
可充電無線藍牙串口通訊電壓檢測器采集系統 MGS-V-4LED無線電壓檢測器是瑪格森科技研發生產的基于藍牙無線傳輸技術的可充電式,移動式電壓檢測系統。該系列電壓檢測器最大測量范圍達0-3V或0-30V,內置3.7V鋰電池,容量200mA-1000mA不等。可以便攜移動,方便攜帶,移動。使用4位0.56’LED數碼管。串口調試軟件/上位機顯示軟件。 產品特點 · 測量電壓范圍 0-3V/0-30V (二選一);· 4位LED數碼管電壓顯示,可開啟,也可關閉· 串口有線通訊,UART,TTL電平。· 串口藍牙無線串口,最遠10米; · 供電方式多樣(內置鋰電池):可外接5V電源,也可內置鋰電池供電。· 低功耗休眠功能:典型休眠電流20uA,功耗低,電池供電也可長時間工作.· 可帶數據采集裝置,藍牙接收器及通訊軟件。 · 外觀:選用通用表頭外殼,可嵌入具體產品中。· 便攜式,移動式,可像萬用表一樣移動,便攜。 二、基本指標說明輸入電壓范圍: 0.000-3.000V/0-30V分辨率1mV顯示方式:4位LED 0.56’數碼管/PC端顯示軟件顯示(與電腦顯示軟件無線聯機)供電接口:ü MICRO 電源座,可使用安卓電源線充電ü 2針插針:可通過接插件外接電源。鋰電池參數:ü 可內置鋰電池電壓3.7Vü 容量200mA/1000mA 不等,視需要 如需其它電壓可咨詢,可接受定制。有線通訊方式ü UART TTL 電平通訊: 可直接與單片機RXD,TXD通訊。ü 可外接UART TTL轉USB線/UART TTL轉RS232 通訊。(用戶自配線)無線串口藍牙通訊 ü 無線串口藍牙設備:內置藍牙發射器+外置接收射器(接電腦USB口)ü 通訊頻率及距離:2.4GHz,10米ü 串口通訊格式:無線串口,9600,N,1通訊協議命令:可提供通訊協議命令
上傳時間: 2022-04-23
上傳用戶: