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	<title>Class D Amplifiers Shop OEM Products DIY Audio</title>
	<link>http://classd.info</link>
	<description>Shop Amplifier Digital Modules , DSP and Power Supply</description>
	<lastBuildDate>Sun, 27 Jun 2010 12:30:43 +0000</lastBuildDate>
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	<item>
		<title>CLASS D AMPLIFIER  TDA 8920 BTH (Classd.co.uk)</title>
		<description><![CDATA[CLASS D AMP 2X100W@4 ohms (Classd.co.uk)
TDA8920BTH  by  Philips high efficiency (2X100W) D audio amplifier, IC use HSOP24 power package, with low power consumption.
The Class D audio amplifier has zero dead-switching, advanced current protection, smooth start work, there is no general amplifier boot (flapping &#8211; flapping) the impact of sound. Complete protection: over current, over voltage, [...]]]></description>
		<link>http://classd.info/electronics-class-d/class-d-amplifier-philips-tda-8920-bth-classdcouk/</link>
			</item>
	<item>
		<title>CAR POWER SUPPLY DC/DC ± 24V (380W )</title>
		<description><![CDATA[Car powersupply  DC/DC ± 24V (380W )

Shaped series of high-power, DC Inverter Regulated Power Supply (DC-DC), is a wide voltage input, multiple output voltage and high current, high-quality, inverter DC regulated switching power supply. For a variety of cars, locomotives, industrial control, car audio Such as: instruments, meters, motor, water pump, car amplifier, LCD display, [...]]]></description>
		<link>http://classd.info/classdcouk/car-power-supply-dcdc-%c2%b1-24v-380w/</link>
			</item>
	<item>
		<title>Power supply 500w  +/-27V (SMPS switching-mode power supply) Classd.co.uk</title>
		<description><![CDATA[ClassD.co.uk Power supply 500w  +/-27V (SMPS switching-mode power supply)




PCB Size: 130mm (length), 100mm (width), 57mm
High, including the PCB at the bottom of 8mm high copper pillar).
Efficiency greater than 90%, without additional heat sink and fan, cooling can be.
Oscillation frequency of 80KHz.
Over-current protection, SD enable pin (do temperature protection).
Ripple is less than 1%.
Instantaneous output current [...]]]></description>
		<link>http://classd.info/electronics-class-d/power-supply-500w-27v-smps-switching-mode-power-supply-classdcouk/</link>
			</item>
	<item>
		<title>Class D Audio Amplifiers: What, Why, and How</title>
		<description><![CDATA[Class D amplif iers, f irst proposed in 1958, have become increasingly popular in recent years. What are Class D amplifiers? How do they compare with other kinds of amplifiers? Why is Class D of interest for audio? What is needed to make a “good” audio Class D amplifier? What are the features of ADI’s [...]]]></description>
		<link>http://classd.info/info-class-d/class-d-audio-amplifiers-what-why-and-how/</link>
			</item>
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		<title>A Little Theory of Class-D Amplifiers</title>
		<description><![CDATA[Why Class-D?
It is a known fact that Class-A or Class-AB amplifiers are rather inefficient and thereforeproduces rather little power for the buck. When it comes to subwoofers, and electrical low frequency enhanced subwoofers in particular, the requirement for high power is quite evident, which makes such a system unnecessarily expensive if the power is delivered [...]]]></description>
		<link>http://classd.info/info-class-d/a-little-theory-of-class-d-amplifiers/</link>
			</item>
	<item>
		<title>Class D Fundamentals of Operation</title>
		<description><![CDATA[Class D Amplifiers: Fundamentals of Operation


Introduction
Most audio system design engineers are well aware of the power-efficiency advantages of Class D amplifiers over linear audio-amplifier classes such as Class A, B, and AB. In linear amplifiers such as Class AB, significant amounts of power are lost due to biasing elements and the linear operation of the [...]]]></description>
		<link>http://classd.info/info-class-d/class-d-fundamentals-of-operation/</link>
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	<item>
		<title>Theory Class D Amplifier</title>
		<description><![CDATA[A Class D amplifier or switching amplifier
is an electronic amplifier where all power devices (usually MOSFETs) are operated as binary switches. They are either fully on or fully off. Ideally, zero time is spent transitioning between those two states. Theoretical power efficiency of class D amplifiers is 100%. That is to say, all of the [...]]]></description>
		<link>http://classd.info/info-class-d/theory-class-d-amplifier/</link>
			</item>
	<item>
		<title>Pulse Width Modulator</title>
		<description><![CDATA[
Table of Contents
1.0  Abstract    …………………………………………………………….. 2
2.0  Introduction   ………………………………………………………….3
3.0 Circuit Components ……………………………………………&#8230;……4
 3.1 Triangle Wave Generator  ………………………………….….4
3.2 Pulse Width Modulator  ……………………………….……….6
 3.3 Tone control filters  ………………………………………..……8
 3.4 Volume and balance control filters  …………………………..10
 3.5 H-Bridge amplification stage  ………………………… ……..11
 3.6 Demodulation filter  ………………………….………………..12
4.0 [...]]]></description>
		<link>http://classd.info/info-class-d/pulse-width-modulator/</link>
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