这可能引发的情况是,电源制造商很乐意保证产品的功能性能达到例如85°C的环境温度,而UL认可则只能在较低温度下有效。 UL认可的例外情况 “UL认可”的电源分类有例外情况:实验室电源和外接适配器被视为独立产品,因而被归入“UL列名”类别。这种分类可以简化设计人员的工作,他们可以指定外部“列名”部件,而不是内部“...
Underwriters' Laboratories, or UL as it is universally known, tests and evaluates components and products that allows a certification mark to be placed by the manufacturer. Most common are the "UL Listed" and "UL Recognized" marks. However, the meaning of these two marks is sometimes misunderst...
What's the Difference Between a Public Benefit Corporation and a B Corp? While PBC status is a legal designation recognized by certain states, B Corp status is a certification from nonprofit network B Lab that shows a company meets high standards for social and environmental performance, accou...
Class 2 vs Class II Given their significant differences, distinguishing between Class 2 and Class II-rated ac-dc power supplies often leads to confusion. This article takes a closer look at the distinctions between these two common power supply classifications, providing a breakdown of their unique...