ov8825規格書，OV 800萬像素圖像傳感芯片 COB晶圓 OV8825 O的具體資料
上傳時間： 2016-05-04
上傳用戶：clsdynlned
The AP2406 is a 1.5Mhz constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The AP2406 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The AP2406 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications. The AP2406 is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version and fixed output voltage of 1.2V, 1.5V and 1.8V
上傳時間： 2017-02-23
上傳用戶：w124141
Lithium–sulfur batteries are a promising energy-storage technology due to their relatively low cost and high theoretical energy density. However, one of their major technical problems is the shuttling of soluble polysulfides between electrodes, resulting in rapid capacity fading. Here, we present a metal–organic framework (MOF)-based battery separator to mitigate the shuttling problem. We show that the MOF-based separator acts as an ionic sieve in lithium–sulfur batteries, which selectively sieves Li+ ions while e ciently suppressing undesired polysulfides migrating to the anode side. When a sulfur-containing mesoporous carbon material (approximately 70 wt% sulfur content) is used as a cathode composite without elaborate synthesis or surface modification, a lithium–sulfur battery with a MOF-based separator exhibits a low capacity decay rate (0.019% per cycle over 1,500 cycles). Moreover, there is almost no capacity fading after the initial 100 cycles. Our approach demonstrates the potential for MOF-based materials as separators for energy-storage applications.
上傳時間： 2017-11-23
上傳用戶：653357637
Lithium–sulfur (Li–S) batteries with high energy density and long cycle life are considered to be one of the most promising next-generation energy-storage systems beyond routine lithium-ion batteries. Various approaches have been proposed to break down technical barriers in Li–S battery systems. The use of nanostructured metal oxides and sulfides for high sulfur utilization and long life span of Li–S batteries is reviewed here. The relationships between the intrinsic properties of metal oxide/sulfide hosts and electrochemical performances of Li–S batteries are discussed. Nanostructured metal oxides/ sulfides hosts used in solid sulfur cathodes, separators/interlayers, lithium- metal-anode protection, and lithium polysulfides batteries are discussed respectively. Prospects for the future developments of Li–S batteries with nanostructured metal oxides/sulfides are also discussed.
上傳時間： 2017-11-23
上傳用戶：653357637
kai li de dao hang GPS之家-專業版243
上傳時間： 2017-12-15
上傳用戶：cyrs
css美化有序列表，貼出部分css代碼 <ol > <li>先涂粉底再涂防曬</li> <li>先涂防曬再涂粉底</li> </ol> <!doctype html> <html> <head> <title>CSS3 ordered list styles - demo</title> <style> body{ margin: 40px auto; width: 500px; } /* -------------------------------------- */ ol{ counter-reset: li; list-style: none; *list-style: decimal; font: 15px 'trebuchet MS', 'lucida sans'; padding: 0; margin-bottom: 4em; text-shadow: 0 1px 0 rgba(255,255,255,.5); } ol ol{ margin: 0 0 0 2em; } /* -------------------------------------- */
上傳時間： 2018-08-22
上傳用戶：53660542
1.5mm間距接插件ZH1.5表貼直插 Altium PCB封裝庫2D3D元件庫（3D視圖庫），共60個器件封裝，型號如下：ZH1.5-LI-2pZH1.5-LI-3PZH1.5-LI-4PZH1.5-LI-5PZH1.5-LI-6PZH1.5-LI-7PZH1.5-LI-8PZH1.5-LI-9PZH1.5-LI-10PZH1.5-LI-11PZH1.5-LI-12pZH1.5-LI-13PZH1.5-LI-14PZH1.5-LI-15PZH1.5-LI-16PZH1.5-LS-2PZH1.5-LS-3PZH1.5-LS-4PZH1.5-LS-5PZH1.5-LS-6PZH1.5-LS-7PZH1.5-LS-8PZH1.5-LS-9PZH1.5-LS-10PZH1.5-LS-11PZH1.5-LS-12PZH1.5-LS-13pZH1.5-LS-14pZH1.5-LS-15PZH1.5-LS-16PZH1.5-WI-2PZH1.5-WI-3PZH1.5-WI-4PZH1.5-WI-5PZH1.5-WI-6PZH1.5-WI-7PZH1.5-WI-8PZH1.5-WI-9PZH1.5-WI-10PZH1.5-WI-11PZH1.5-WI-12PZH1.5-WI-13PZH1.5-WI-14PZH1.5-WI-15PZH1.5-WI-16PZH1.5-WS-2PZH1.5-WS-3PZH1.5-WS-4PZH1.5-WS-5PZH1.5-WS-6PZH1.5-WS-7PZH1.5-WS-8PZH1.5-WS-9PZH1.5-WS-10PZH1.5-WS-11PZH1.5-WS-12PZH1.5-WS-13PZH1.5-WS-14PZH1.5-WS-15PZH1.5-WS-16P
上傳時間： 2021-11-21
上傳用戶：XuVshu
The PW4556 series of devices are highly integrated Li-Ion and Li-Pol linear chargers targetedat small capacity battery for portable applications. It is a complete constant-current/ constantvoltage linear charger. No external sense resistor is needed, and no blocking diode is required dueto the internal MOSFET architecture. It can deliver up to 300mA of charge current (using a goodthermal PCB layout) with a final float voltage accuracy of ±1%. The charge voltage is fixed at 4.2V or4.35V, and the charge current can be programmed externally with a single resistor. The chargerfunction has high accuracy current and voltage regulation loops and charge termination
標簽： pw4556
上傳時間： 2022-02-11
上傳用戶：1208020161
The PW4554 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger.The charger uses a CC/CV charge profile required by Li-ion battery. The charger accepts an inputvoltage up to 24V but is disabled when the input voltage exceeds the OVP threshold, typically 6.8V,to prevent excessive power dissipation. The 24V rating eliminates the over-voltage protection circuitrequired in a low input voltage charger
標簽： pw4554
上傳時間： 2022-02-11
上傳用戶：
PW4203 is a 4.5-22V input, 2A multi-cell synchronous Buck Li-Ion battery charger, suitable forportable application. Select pin is convenient for multi-cell charging. 800 kHz synchronous buckregulator integrates of 22V rating FETs with ultra low on- resistance to achieve high efficiency andsimple circuit design.The PW4203 is available in an 8-pin SOP package, provides a very compact system solution andgood thermal conductance
標簽： pw4203
上傳時間： 2022-02-11
上傳用戶：
