Abstract: USB powered devices require a regulated supply. Unfortunately, the USB bus voltage can vary from 4V to 9V. Configuring the MAX668 boost controller into step-up/step-down topology can generate a current-limited regulated supply. ...

正確的布局和元件選擇控制電磁干擾 Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical principl...

Abstract: This tutorial outlines the basic construction, operation, and applications of analog switches. On-resistance, flatness, and charge-injection, each a performance-related specification, are defined. Application-specific features in...

Abstract: When using an external thermal diode to measure temperature, the accuracy of the temperature measurement depends on the characteristics of the external diode. Two critical parameters that affect measurement accuracy are ideality ...

Abstract: This note compares advantages and disadvantages of Cathode Ray Tubes, Electro-Luminescent, Flip-Dot, Incandescent Light Bulbs, Liquid Crystal, Light Emitting Diode, Organic LEDs, Polymer LEDs, Glow Discharge, Plasma Display Panel...

To prevent excessive power dissipation during output short circuit, the MAX1937/MAX1938/MAX1939 provide a latch off feature under either short circuit or under-voltage-lockout condition. Once the output is latched off either the input or t...

Abstract: An avalanche diode and current source provide a floating power supply to allow high-side current sense amplifiers to work at up to 300V. The MAX471 and MAX472 are complete bi-directional high-side current sense ...

Abstract: White light-emitting diode (WLED) drivers provide high efficiency and brightness matching for LCD backlighting in displays. To control brightness, these drivers regulate current going into LEDs that are arranged in either serial ...

Abstract: Battery operated devices often need to monitor both charge and discharge currents. A dual current-sense amplifier and differential amplifier are combined to produce a single output voltage that indicates magnitude and direction o...

光耦延長高側電流傳感...

Abstract: Watchdog timers are used to monitor and minimize code execution errors. Internal watchdog timers are subject to code execution problems, making external watchdog circuits invaluable in preventing system lockup.This docume...

鋁的焊接方法 1．鋁及鋁合金的焊接特點    （1）鋁在空氣中及焊接時極易氧化，生成的氧化鋁（Al2O3）熔點高、非常穩定，不...

什么是酷睿(intel Core) 酷睿是英特爾推出的新一代基于Core微架構的產品體系統稱。于2006年7月27日發布。 一個跨平臺的構架體系...

PS2接口的MINI-DIN連接器接口定義圖    ...

什么是ps2接口 ps2接口是什么意思？ PS/2接口是目前最常見的鼠標接口，最初是IBM公司的專利，俗稱“小口”。這是一種鼠標和鍵...

ps2的usb接口有什么用 PS2鍵盤鼠標USB U盤接口,你用什么連接USB 接口啊? 如果你的是2000或XP 系統， U盤直接插上就可以 如果是手機或MP3有的直接插可以但是...

摘要：電壓基準源簡單、穩定的基準電壓，作為電路設計的一個關鍵因素，電壓基準源的選擇需要考慮多方面的問題并作出折衷。本文討論了不同類型的電壓基準源以及它們的關鍵...

摘要：MAX8538雙路同步buck控制器能夠提供3A的+5V、-5V輸出。利用一個控制器作為同步整流降壓(buck)轉換，而另一個通過變壓器輸出負壓。電路支持軟啟動和軟關斷。 這里...

摘要：利用遠程溫度傳感器監測高性能微處理器和圖象處理器的管芯溫度現已成為一種很普通的技術，被用于系統的功率和熱量等工況的管理。隨著時鐘速度、電路密度和功率水平...

摘要：本應用筆記描述了一個完全滿足AMD® K8低功耗移動處理器規范的兩相、同步整流型降壓調節器。包括一個1.2V、27.3A參考設計的詳細電路工作原理、電路圖、元件清單以及測試...