共找到 150 條與 空載聲功率級(jí) 相關的標準，共 10 頁
External AC - DC and AC - AC Power Sources - Determination of No-Load Power and Average Active Mode Efficiency
External a.c - d.c and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes
Blank detailed specification for high frequency low power transistors for semiconductor discrete devices
半導體光電子器件功率發光二極管空白詳細規范
Semiconductor optoelectronic devices—Blank detail specification for power light-emitting diodes
The test results enable the comparison of A-weighted sound emission from vacuum cleaners when tested under the condition of this test method.
Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners
Blank Detail Specification: Fixed low power wirewound surface mount (SMD) resistors
External a.c. - d.c. and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes (Incorporates Amendment A1: 2013)
External a.c. - d.c. and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes
This European Standard specifies methods of measurement of electrical power consumption, and the reporting of results, for external power supplies
External a.c. - d.c. and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes
External a.c. - d.c. and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes; German version EN 50563:2011 + A1:2013
External a.c. - d.c. and a.c. - a.c. power supplies - Determination of no-load power and average efficiency of active modes
本文件規定了汽車空調鼓風機調速功率模塊 第1部分：通用要求的相關專業術語、定義、縮略語、分類、特有參數要求、試驗方法。 本文件適用于汽車空調鼓風機調速功率模塊。以下簡稱“調速模塊
Automobile air conditioning blower speed regulating power module Part 1: General requirements
Blank Detail Specification: Fixed low power wirewound surface mount (SMD) resistors
本標準規定了移動臺的空間射頻輻射功率和接收機性能測量方法,包括頻率范圍和限值。本標準適用于便攜和車載使用的移動臺,也適用于那些由交流電源供電且在固定位置使用的移動臺以及通過USB接口、Express接口和PCMCIA接口等接口連接在便攜式計算機的數據設備
Measurement method for radiated RF power and receiver performance of mobile stations
Blank Detail Specification: Fixed low power film surface mount (SMD) resistors
