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Here are some articles covering audio amplifiers. Some of the articles
are describing do it yourself amplifiers, on a non commercial basis.
The author has no responsibility what so ever regarding these descriptions.
This brand new design is an audio non-feedback class A amplifier,
divided into two parts: 1) A Buffer Amplifier working in class A
with a voltage gain of 0 dB, but with a very high current gain,
and 2) A Voltage Amplifier also working in class A, with a high
voltage gain and a low output impedance. It is also possible to
use this amplifier as a headphone amplifier or an ordinary preamplifier.
For both the Buffer and the Voltage Amplifier, it is possible
to get printed circuit boards.
This is a general desription of the differential stage, the operational
amplifier and the current feedback amplifier.
This is firstly a general description of RIAA phono equalising
and secondly a short description of the author's own RIAA amplifier.
This article is discussing audio power amplifiers, revealing the
advantages of class A amplifiers compared to class B and A/B.
This is a relatively detailed description of a DIY 'Current Feedback'
class A power amplifier rated to 2x25 W RMS (new and updated version!).
An elder version may be found here.
This article is a detailed description of a DIY Classical 'Voltage
Feedback' class A power amplifier rated up to 2x50 W RMS.
This article is a short description of a DIY Folded Cascode 'Non-feedback'
class A power amplifier rated to 2x30 W RMS.
This article is a short description of a DIY JFET/MOSFET headphone
amplifier for impedances between 32 and 1200 ohms. The article is
updated oct 2006.
This remote site is a free data sheet search engine that enable
users to find any datasheet and technical specs, plus general electronics,
applications designs, etc in their recommended
sites.
Important notice!
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