音响系统设备第3部分:放大器

[中文适用范围]： 本部分IEC 60268适用于模拟放大器，以及模拟/数字放大器的模拟部分，这些放大器是专业或家用音响系统的一部分。它规定了放大器的特性应包括在规范中，以及相应的测量方法。 注1：数字放大器及类似设备的测量方法在IEC 61606[1]中给出。 通常，指定的测量方法是那些被认为与特性最直接相关的方法。这并不排除使用其他给出等效结果的方法。 通常，这些方法基于能够提供有用结果的最简单测量设备。这并不排除使用更复杂的设备，这些设备可以提供更高的准确性和/或允许自动测量和记录结果。 规定了额定条件和标准测量条件，以便可靠地重复测量。 [外文原描述]： IEC 60268-3:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60268-3:2018 applies to analogue amplifiers, and the analogue parts of analogue/digital amplifiers, which form part of a sound system for professional or household applications. It specifies the characteristics that should be included in specifications of amplifiers and the corresponding methods of measurement. This part of IEC 60268 shall be used in conjunction with IEC 60268-1:1985 and IEC 60268 2:1987. This fifth edition cancels and replaces the fourth edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) rated condition of digital input is newly specified; b) tolerance of rated power supply is changed; c) maximum effective output power is appended to output characteristics list; d) "Terms, definitions and rated values" clause is complemented.