Single chip Quadraphonic Amplifier Circuit – For Making Home theater Systems

In this post we learn how to make a simple single chip quadraphonic amplifier circuit which can drive four loudspeakers through 4 separate input channels, this IC becomes ideally suitable for making small compact home theater systems. This specific amplifier offers, with a single integrated circuit and handful of supplemental components, four independent amplification channels […]

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70 Watt High Efficiency Power Amplifier Circuit Using IC TDA1562

In this post we learn about a simple single cheap 70 watt high efficiency power amplifier circuit using the IC TDA1562 FUNCTIONAL DESCRIPTION: The TDA1562Q consists of a mono class-H BTL output power amplifier. During lower output power, approximately 18 W, the system works like a typical BTL amplifier. If a much larger output voltage […]

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Simple 100 Watt Amplifier Circuit using 2N3055 Transistors

Here we learn how to make a very simple 100 watt amplifier circuit using a 2N3055 transistors and a few other passive components. Simply by incorporating just four transistors in the quasi-complementary configuration this 2N3055 simple power amplifier circuit can deliver a good 100 watts of power over an attached 4 ohms loud speaker, and […]

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Simple 100 Watt Amplifier Circuit using a Single IC

In this post we learn about a very simple yet robust single IC 100 watt power amplifier circuit which utilizes minimum number of components. As one can witness virtually the entire amplifier circuit itself is processed within the LM12CLK integrated circuit which is actually an operational power amplifier. The IC is equipped with an output […]

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Simple 300 Watt Power Amplifier Circuit using Transistors

For hobbyists and music lovers who are interested to get more audio power from a simple amplifier circuit, here we present this 300 watt power amplifier circuit capable of delivering overloaded 300w RMS over a load of 8 ohms, and over 350 watts with 4 Ohm speakers. The proposed amplifier circuit uses complementary transistors to […]

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Subwoofer Amplifier Circuit – High Power

The post explains a simple high power subwoofer amplifier circuit which could be used for driving high bass subwoofer speakers and home theater systems. A Subwoofer is actually a loudspeaker which will develop audio signals of lower frequencies. The initial subwoofer amplifier had been engineered in 1970 by Ken Kreisler. It is fundamentally employed to […]

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Simple Telephone Amplifier Circuit

This telephone amplifier circuit saves the trouble of holding the telephone handset while talking. It is also very useful when a group of people want to listen to the telephone conversation. Under these conditions, all one has to do is to switch on the telephone amplifier and listen to the amplified voice of the caller […]

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Simple 20 watt Amplifier Circuit

This simple 20 watt amplifier circuit can be easily built at home using TDA2005 IC [You can also use TDA2004]. The procedure not complex and at the end you will hear it playing nicely with the customization bass and treble control feature.   The circuit diagram for the project with bass and treble feature The […]

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Small Transistor Amplifier Circuit

The following is a small transistor amplifier circuit much like you will probably find in a compact transistor car radio. The source stage is biased to ensure the source voltage is separated proportionately throughout the a couple of matching output BJTs that happen to be moderately biased in conduction by the diodes between the bases. […]

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Amplifier/Loudspeaker Overload Protector Circuit

At the time of dealing with high power amplifier designs, two things turn out to be essential, the security of the amplifier and the safety of the speakers from an accidental over current influx. Particularly whenever the amplifier design entails expensive mosfets, the design turns into in particular susceptible to short circuits at the outputs. […]

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