電源/新能源
提供權(quán)威的電源和新能源設(shè)計及電源管理資訊，內(nèi)容有醫(yī)療/工業(yè)電源、LED驅(qū)動、數(shù)字電源、電池技術(shù)、太陽能光伏等電源技術(shù)方案，包括電源測試/仿真/認證、便攜電源、電動車/新能源、AC-DC與DC-DC轉(zhuǎn)換、基準/監(jiān)控/保護電路等專業(yè)領(lǐng)域。
Smart IC Maintains Uniform Bia
Abstract: A current sensor that monitors the drain-source current (IDS) at the source of the MESFET and provides feedback to the gate input overcoming the drawbacks of gate-turn-on threshold voltage variations for gallium-arsenide metal-se...
2009-05-07 標簽：IC 1368
熱電偶預(yù)放大器-Thermocouple Pre Amp
Abstract: Using a preamp to increase the output magnitude of a J-type thermocoupler. The simple circuit provides compensation over temperature as well as calibration capability. The MAX430 is operated at a gain of 191 to ...
2009-05-07 標簽：放大器 1540
Two ICs Convert 4-20mA Signal
Abstract: This design idea describes a simple circuit that converts a 4-20mA signal to a 0V to 5V analog voltage ideal for conversion to digital with an analog-to-digital converter (ADC). The 4mA level from the transducer produces a 0V out...
2009-05-07 標簽：IC 773
可選范圍電流環(huán)-Selectable-Range Curre
Abstract: This article shows an example of implementing a 4-20mA or 0-20mA current-loop output using a voltage output digital-to-analog converter (DAC) and a V to I converter. Current-loop signals, as opposed to voltage s...
2009-05-07 標簽：電流環(huán) 1227
3V/5V的DAC支持智能電流環(huán)-3V/5V DACs Su
Abstract: This application note explains 4-20mA current loops and intelligent transmitters and explains their need for high-resolution low-power DACs. An optimum power-supply chip is not the only critical choice to be mad...
2009-05-07 標簽：電流環(huán) 1858
采用簡單的穩(wěn)壓電路為高邊電流監(jiān)測器提供恒定電壓
摘要：在典型的光電二極管電流監(jiān)測應(yīng)用中，電流監(jiān)測器和雪崩光電二極管(APD)之間的壓降隨溫度和電流而變化，由此改變了總增益。本應(yīng)用筆記介紹了一種利用穩(wěn)壓電路保持電流檢...
2009-05-07 標簽：穩(wěn)壓電路 589
電流限制電路的降壓穩(wěn)壓器-Current-Limit Cir
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...
2009-05-07 標簽：穩(wěn)壓器 1373
A Compact, Isolated Power Supp
Abstract: This application notes describes a compact isolated switch-mode power supply that is capable of providing a 7A 3.3V output from a 40VDC–60VDC input at an efficiency of 83%–90%. The converter employs a MAX5052A current-mode PW...
2009-05-07 標簽：Power 1547
建立一個電荷泵的超低靜態(tài)電流（靜態(tài)）-Build a Cha
Abstract: Combining low-on-resistance analog switches with a reference and ultra-low quiescent current comparator produces a discrete-component regulated charge pump that delivers 10mA, with only 7uA of quiescent current (Iq). ...
50瓦特內(nèi)部總線結(jié)構(gòu)(IBA)電源
摘要：本文討論一個12V/50W的總線轉(zhuǎn)換器，它從48V總線轉(zhuǎn)換得到一個穩(wěn)定、高效、隔離的12V輸出。用到的拓撲結(jié)構(gòu)是帶同步整流的單開關(guān)正激轉(zhuǎn)換器。在此設(shè)計中MAX5003為PWM控制器，經(jīng)...
2009-05-07 標簽：總線 1217
用于ADSL2+芯片組的2.2MHz降壓或升壓變換電源
摘要：本應(yīng)用筆記介紹了MAX5072 DC-DC變換器―專為解決ADSL2+調(diào)制解調(diào)器的電源管理問題而設(shè)計的器件。還提供了有關(guān)升壓、降壓或升-降壓變換器的設(shè)計指南，并給出了經(jīng)過驗證的電路...
Bias Supply Powers Low-Power G
Abstract: A high-voltage bias supply for a Geiger-Mueller tube features small size and low power consumption. Many portable radiation monitors include a Geiger-Mueller tube, a simple, two-terminal, gas-filled detector tha...
2009-05-07 標簽：Low-Power 2796
單電源運算放大器的設(shè)計考慮
摘要：為了減小產(chǎn)品尺寸、降低成本、延長電池壽命、提高電池供電系統(tǒng)的性能，設(shè)計人員加快了低電壓、單電源系統(tǒng)的開發(fā)、應(yīng)用趨勢。這種趨勢對消費者是有益的，但卻使得為...
2009-05-07 標簽：放大器 1692
Inexpensive Peak Detector Feat
Abstract: This circuit, which uses a digital potentiometer (pot) and a comparator, features droopless operation that is not normally associated with peak detectors that have traditionally used rectifiers and sample-and-holds (S/H). ...
2009-05-07 標簽：Peak 1310
AC耦合放大器無需直流偏置-AC-Coupled Ampli
Abstract: Unity gain op amp buffers capacitive transducer and other high-impedance signal sources without the need for bias resistors. Capacitive transducers and other high-impedance signal sources usually require AC coup...
運算放大器的輸入-Operational Amplifier
Abstract: When does input bias current become a concern? Which architecture offers the lowest offset voltage? This application note introduces common op-amp input structures with their associated design advantages and challenges. ...
2009-05-07 標簽：AmplifierOperationa 2043
DAC and Op Amp Generate Variab
Abstract: This design idea describes a simple circuit to generate a programmable negative control voltage. It takes the output of a single supply digital-to-analog converter (DAC) and produces a variable negative voltage. The DAC output fr...
2009-05-07 標簽：Voltage 2303
Rail-to-Rail Outputs and Beyon
Abstract: When does the input voltage range of a low power/low voltage op amp become important? What operational amplifier should you choose when designing a battery powered handheld system? To optimize performance in tod...
2009-05-07 標簽：Micropower 2873
監(jiān)測一小步變化的直流電壓-Monitoring a Smal
Abstract: Simple level shifting circuit using a precision op amp tracks small DC voltage changes. When we want to capture a low level, long duration signal riding on a much higher DC level, we need to have adequate resolu...
2009-05-07 標簽：直流電壓 1295
審議“ Deboo ”單電源集成-Consider the
Abstract: The "Deboo" Integrator simplifies the use of single-supplies by ground-referencing both the input and the output. The design of standard inverting integrators is simple when bipolar supplies are available, but i...
2009-05-07 標簽：電源集成 877
Negative Resistor Cancels Op A
Abstract: Canceling the load allows the op amp the capability for high output current while maintaining all the other high-accuracy specifications such as very high open-loop gain, low offset voltage and current, low offset-voltage and off...
2009-05-07 標簽：Resistor 1395
交點分析運算放大器電路-Nodal Analysis of
Abstract: The creation of the op amp introduced a new fundamental component and marked a change in thinking for analog designers. Since it is so widely used, pretty much any op amp circuit that an engineer needs to implement has already be...
2009-05-07 標簽：放大器 795
三運放架構(gòu)對儀表放大器的制約
摘要：一直以來，三運放儀表放大器作為工業(yè)標準被用于那些要求高增益和/或高CMRR的精密應(yīng)用場合。然而，當(dāng)此類放大器工作在當(dāng)前絕大多數(shù)應(yīng)用所要求的單電源供電系統(tǒng)時，存在...
2009-05-07 標簽：放大器 2035
帶有輸入串聯(lián)電阻的電流檢測放大器的性能
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...
Extend Current-Sense Amplifier
Abstract: Adding a charge pump provides ±5V supply rails to the operational amplifier internal to a high-side current-sense amplifier. This modification enables that amplifier to sense currents down to 0V common-mode inputs. The circuit c...
2009-05-07 標簽：AmplifierCurrent-Se 2553
采用簡單的穩(wěn)壓電路為高邊電流監(jiān)測器提供恒定電壓
摘要：在典型的光電二極管電流監(jiān)測應(yīng)用中，電流監(jiān)測器和雪崩光電二極管(APD)之間的壓降隨溫度和電流而變化，由此改變了總增益。本應(yīng)用筆記介紹了一種利用穩(wěn)壓電路保持電流檢...
利用精密儀表放大器實現(xiàn)負壓電流檢測
摘要：ISDN、電信等系統(tǒng)需要一個負壓電流檢測放大器。本應(yīng)用筆記介紹了一種設(shè)計負壓電流檢測放大器的方法。這種方法非常靈活，經(jīng)過簡單修改即可用于不同的負壓電流檢測。本...
建立比較器的外部滯回電壓
摘要：長期以來, 模擬比較器的使用一直處在它的“同伴”――運算放大器的陰影之中。設(shè)計人員發(fā)表了大量針對運算放大器的應(yīng)用筆記, 而關(guān)于比較器的應(yīng)用筆記較少。正是由于缺...
特種氬弧焊機電源的實現(xiàn)
討論了一種用于氬弧焊機的電源系統(tǒng)。該系統(tǒng)解決了現(xiàn)有焊接電源存在的引弧困難、電流控制精度低等問題；電源隨工控機控制的給定焊接電流參數(shù)而變化，提高了設(shè)備的自動化程...
2009-05-06 標簽：電源 3529
Autozero Noise Filtering Impro
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...
2009-05-06 標簽：Filtering 1208
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