Windows USB 驅(qū)動程序接口系統(tǒng)中的USB的驅(qū)動程序完成許多的工作。實際上對于一些HID的USB設(shè) 備,象鍵盤,鼠標(biāo)和游戲操縱桿之類的設(shè)備可以自動的被系統(tǒng)識別...

USB的基本特性 每一個設(shè)備(device)會有一個或者多個的邏輯連接點在里面,每個連接點叫 endpoint.每個endpoint有四種數(shù)據(jù)傳送方式:控制(Contr...

USB開發(fā)步驟之標(biāo)準(zhǔn)篇 通用串行總線（Universal Serial Bus）    是用于將適用USB的外圍設(shè)備連接到主機的外部總線結(jié)構(gòu),...

USB應(yīng)用技術(shù) 通用串行總線(Universal Serial Bus，簡稱USB)從誕生后發(fā)展到今天，已將近十年。伴隨著計算機技術(shù)的迅猛發(fā)展，USB協(xié)議從1.1過渡到2.0，作為其最重要指標(biāo)的設(shè)備傳輸...

Abstract: This article shows a simple technique to reduce the output noise of an autozero, indirect current-feedback instrumentation amplifier. The MAX4209 instrumentation amplifier serves as design example. A similar art...

Abstract: This circuit modifies a standard 32V high-side current monitor to measure load current (to 30mA) while accommodating any level of high voltage, subject to limitations in the external components. (The components shown allow measur...

Abstract: Using a current-sense amplifier, a high-side MOSFET driver, and a latching voltage monitor a circuit can be easily constructed that protects from overcurrent conditions and operates at voltages as high as 26V. W...

Abstract: This article demonstrates how to achieve current limit for the MAX1692 PWM step-down regulator by using a MAX4173H current-sense amplifier. Additional Information: Quick View Data Sheet for the MAX16...

Abstract: Current sharing between DC/DC converter modules enables several modules to be paralleled. In recent years, tight tolerances for current sharing have made discrete current-sense circuit designs a formidable challenge. This applica...

Abstract: The MAX4374 high-side current sense amplifier with two internal comparators is used to produce a pulse-width output signal proportional to the current being sensed. This simple circuit eliminates the need for a discrete A/D conve...

Abstract: This application note describes the design of a PC-based, 14-bit data acquisition system. It takes a system approach, includes all the necessary building blocks: analog, digital, hardware, and software. It discusses each step, te...

Portable systems often use LEDs of different colors-white for the display backlight, green for keypad illumination, red for power, etc., and in varying quantities of each. Typically the LEDs are driven by at least two power supplies, one f...

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 ...

Optocouple...

摘要：大多數(shù)情況下電路斷路器是檢測電流。例如，保險絲，當(dāng)電路超過它的限值時, 它靠切斷電流來保護電路。對于恒定DC或RMS電源電壓...

摘要：該電流檢測電路監(jiān)視負(fù)電源，并提供一個正比于負(fù)載電流的正輸出電壓。 在一個高可靠系統(tǒng)中，電源電流監(jiān)視通常是一項必備功能，因為電流過大會給系統(tǒng)造成...

摘要：電流檢測最簡單的方法是依據(jù)歐姆定律：電阻兩端的壓降和流過電阻的電流成正比。本文討論了基于電阻的電流檢測在實際設(shè)計中的問題，列舉了一些典型實例，如：電流保...

摘要：許多電池電流監(jiān)測應(yīng)用中需要雙向電流檢測功能，以測量電池的充電和放電電流。本文介紹了怎樣用兩個單向電流檢測放大器，比如MAX4172和MAX4173，組成一個雙向電流檢測放大...

摘要：本文介紹了一個簡單、具有快速響應(yīng)時間的過流故障檢測器，用于低壓系統(tǒng)的電路保護。該方案與專用的熱插拔控制器不同，專用的熱插拔控制器跳出欠壓狀態(tài)后往往具有較...

摘要：本篇應(yīng)用筆記闡述了高邊電流檢測放大器的性能特性。本文論述了在放大器的檢測輸入端如何使用串聯(lián)電阻。該設(shè)計方法特別適用于需要對高壓線路上檢測電阻兩端的小信號...