Усилитель мощности ZD-50 (LM3886)
Power amplifier ZD-50 (LM3886)
Very high characteristics of this amplifier are achieved at the expense of a deep OS, mainly in the sound area of ??frequencies. The amplifier is based on the well -known LM3886 chip. The deep OS is achieved by adding another, "more high -quality" OS. Thus, the depth of the OS at 20KHZ reaches 70DB and more at lower frequencies.
For comparison, the usual inclusion of LM386 with KU = 12 OS depth of 20KHZ is only about 30DB. Those. The depth of the OS in the sound range in this amplifier is at least 40DB (100 times) more than in standard inclusion and, accordingly, potentially distortion in the sound range is as much less.
(C) Nikolai Shvydky Aka Nick
Пiдсилювач потужностi ZD-50 (LM3886)
Дуже високi характеристики цього пiдсилювача досягаються за рахунок глибокоi ОС, головним чином у звуковiй областi частот. Пiдсилювач заснований на добре вiдомому чiпi LM3886. Глибока ОС досяга?ться шляхом додавання iншоi "високоi якостi" ОС. Таким чином, глибина ОС при 20 кГц досяга? 70 дБ i бiльше на нижчих частотах. Для порiвняння, звичайне включення LM386 з Ku = 12 глибиною ОС 20 кГц становить лише близько 30 дБ. Глибина ОС у звуковому дiапазонi в цьому пiдсилювачi становить щонайменше 40 дБ (у 100 разiв) бiльше, нiж у стандартному включеннi i, вiдповiдно, потенцiйно спотворення в звуковому дiапазонi настiльки менше. (C) Микола Швидкий, в?н же Nick
Article: http://www.vegalab.ru/index.php?option=content&task=view&id=225
russian forum: http://forum.vegalab.ru/showthread.php?t=20617&page=267&p=2775569#post2775569
Усилитель мощности ZD-50 (LM3886)
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- Rogachev Aleksandr Sergeevich May 22,2020
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