利用LM337与少数组件将0–20mA电流源转换为标准4–20mA二线式电流环的极简高精度设计... 在最近的设计实例(DI)单元中，Stephen Woodward分享了一篇“如何用LM337轻松升级工业设备？极简的电路设计方案”，是一个采用经典的LM337线性稳压器与少数被动组件的创意 ...

结合两颗TL431分流稳压器，可精准控制电流镜的电流比例，并可加入电流偏移与功率扩展… 近来在设计实例栏目中，各式各样的电流镜电路设计成为热门讨论的话题。一般而言，电流镜设计者的目标是让输入电流与输出电流精确相等，但图1所示的电路却走了 ...

President Trump this week complained that America’s allies hadn’t stepped up to help break the Iranian blockade of the Strait of Hormuz. “Some are very enthusiastic about it, and some aren’t,” he said ...

Another odd-looking aircraft flew around the Central Valley on Wednesday. According to an online aircraft website, the plane was doing circles around the airport, then went east and did more circles ...

DUBAI, United Arab Emirates (AP) — U.S. President Donald Trump's recent assertion that negotiations with Iran are making significant progress has created further confusion regarding the objectives of ...

Ruth Enid Zambrana ([email protected]), University of Maryland, College Park, Maryland. David R. Williams, Harvard University, Boston, Massachusetts. Research related to racism and health has evolved ...

When I found out that I was no longer eligible for an early-career grant, I took a moment to pause and reflect on my family life and my work.

Terms apply to American Express benefits and offers. Visit americanexpress.com to learn more. Life is better with a good credit score. This three-digit number affects nearly every facet of your ...