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可编程直流电源如何工作 Wednesday, April 9, 2025
电源类型、功能和应用 理想的直流电源可不受负载电流影响,提供恒定的直流电压输出。但目前,尚无电子产品或其他类似用途器件能够达到电子产品教科书(其中的所有设计都是基于理想组件)中所述的性能水平。那么,真实电源与理论上的理想电源存在哪些不同呢?在回答这个问题之前,我们先来看看实际可编程直流电源的工作方式。电源的类型众多,具体功能也不尽相同。那么我们就来看看电源的类型和功能。可编程直流电源在众多行业有着众多的应用方式。我们将探讨电源的某些特性,看看这些特性如何赋予电源丰富的功能,进而满足多样化的应用需求。事实上,看似简单的产品实际上可能蕴含复杂的技术。 电源工作方式概述 图 1 显示了直流电源的基本电路模块。变压器将交流线路与电路的其他部分进行电隔离。变压器还根据所需要的并且电源预期拥有的最大直流输出电压,调低或调高交流线路的电压。整流电路模块将来自变压器的交流电压转换为单极交流电压。接下来 …
推动航空业净零排放进程 Wednesday, April 9, 2025
EA Elektro-Automatik 如何依托电动推进系统助力氢燃料飞机的未来发展 工程设计的一个振奋人心的方面是,通过创新改变人们的生活方式。当然,这也适用于向氢燃料和电池动力商用飞机的转型。未来学家、电力工程师和航空工程师设想了一个有着静音且零排放的客机、无人机、乃至自动驾驶出租飞机的世界。 实现飞机净零排放远不只是为了完成温室气体减排任务。跟电动汽车一样,相比以煤油为动力的飞机,氢燃料飞机的电动机在维护成本上有望大大降低。节省运行成本则有望提升短程航班的盈利率,开辟更多新航线。 小型飞机可以做到全电动。ResearchAndMarkets.com 研究显示,在 2030 年,全球电动飞机市场的规模有望达到 2.266 亿美元,而多家大型航空公司都已宣布计划在 2030 年之前改用电动飞机。工程师们在现有混合动力汽车和电动汽车的基础之上,正快速推进这项技术在航空领域的应用 …
大功率系统:自建还是购买? Friday, April 4, 2025
您是否需要采用大功率系统对太阳能电池板阵列、电动汽车电池、燃料电池系统或其他需要高功率的产品执行老化测试或处理?您的第一印象可能是解决方案似乎很简单:在一个 19 英寸的仪器机架或多机架中装上所需数量的仪器,以满足测试系统的功率要求。 在进一步研究之后,则会发现需要考虑以下问题: 我们是否具备确保系统安全并符合适用安全标准的知识? 我的部门能否花时间做这项工作?我们有适当的人员负责设计、采购材料、组装、编程和测试系统吗? 我们如何管理大功率系统的散热? 生产布局发生变化时,我们能否确保轻松操控测试系统? 为了便于安装并降低互联功耗,如何对测试系统布线? 如何记录系统的安装、运行和维护? 事实证明,开发大功率系统是一项复杂的挑战。更出色的备选方案可以节约时间和资源,让您能够凭借电源和电子负载制造商在电源测试系统研制领域积累的丰富经验 …
碳化硅技术赋能EA 10000系列电源 Friday, April 4, 2025
人们在减缓气候变化方面的努力推进了非化石燃料、可再生能源解决方案以及交通运输行业加速电气化的进程。这些新技术要求使用大功率,因此也推动了电源行业的新发展。电动汽车 (EV) 的电池组电压可超过 900 VDC,容量可达 95 kWh。快速 EV 充电系统的额定功率超过 240 kW。氢燃料电池的电芯堆叠是另一项在研的汽车供电技术,其容量可超过 500 kW,输出电流可达 1000 A。 一方面,我们需要摆脱化石燃料,另一方面,全球能耗又在不断攀升。服务器场便是有着更高能源需求的应用例子之一。为了使采用可再生能源来支撑运行成为可能,服务器场正从交流配电转型为直流配电,其工作电压达 360 VDC,电流容量达 2000 A。此外,许多新兴技术也在使用 1800 VDC 级别的电压。   市场需求下的挑战 面对测试这些大功率产品的市场要求,EA 需要开发输出功率更大、输出电压更高 …
Tektronix’s Partnership with Trusted Distributors: Fighting Hunger and Reducing Food Waste Together
AGC 25 Friday, March 28, 2025
Tektronix’s Partnership with Trusted Distributors: Fighting Hunger and Reducing Food Waste Together At Tektronix, our global network of trusted partners plays a pivotal role in ensuring we deliver innovative solutions to engineers across industries. This year, we’re proud to highlight a special initiative that reflects our commitment not only to the advancement of technology but also to giving …
Single vs. multi-channel bench power supply
Choosing the Right Lab Power Supply for Your Test Bench Thursday, March 27, 2025
A lab power supply is more than just a tool—it's the foundation of reliable circuit testing. Whether you're debugging prototypes, designing new electronics, or running precise experiments, the right power supply ensures stable, accurate power delivery. Choosing the best one for your test bench means considering factors like voltage range, efficiency, and safety features. Let’s explore how to …
Switching Power Supplies
What Is a Switching Power Supply (SMPS)? A Definitive Engineer’s Guide Tuesday, March 25, 2025
A switching power supply (often abbreviated SMPS for switched-mode power supply) is an electronic power converter known for efficiently transforming AC power into stable DC voltage through rapid switching techniques. But what exactly makes it 'switching,' and why has it become so essential for modern electronics? Why Is It Called a “Switching” Power Supply? Unlike linear power supplies, which …
Power Supply Selector Guide
Parallel Power Supplies: A Complete Guide to Increasing Current Capacity and Reliability Wednesday, March 19, 2025
Introduction In many test and industrial applications, a single power supply may not provide enough current to meet system demands. Connecting power supplies in parallel is a practical solution that allows users to increase available current while maintaining a stable voltage. This technique can also improve system redundancy, reducing the risk of downtime due to power failures. In this guide …
Perform More Tests and Increase Throughput with High-Power, 3-Channel Bidirectional Power Supplies Friday, February 14, 2025
They are common challenges every test engineer is likely to face at some point: production demand is outpacing the capability of your test system, or you need to test more parameters simultaneously. Until now, you have needed to build more test systems requiring more test equipment. That has been true for high power applications in which multiple DC power supplies are required. Applications …
TekHSI
HSI is Faster and Simpler Than SCPI Monday, January 13, 2025
Have you ever wished that pulling waveform data from your oscilloscope could be faster? In this blog, we’ll explore TekHSI (Tektronix High Speed Interface), the speed improvements it offers, and review examples on why it’s so easy to use. What is TekHSI? TekHSI is a new feature available on Tektronix 4B, 5 and 6 (B and LP) Series MSO Oscilloscopes via the latest firmware update, v2.10. TekHSI is …