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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Simple Home Theater Circuit Explained

The post mentioned right here offers a basic, inexpensive home theater system circuit which may be developed at home and employed for the preferred purpose. The results emanating from this circuit design are remarkably rich as well as have the features identical with the expensive hi-end types readily available. Home theater systems are extremely common […]

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Stereo Preamplifier Circuit with Bass Treble Control

This simple, one-chip, stereo preamplifier is ideal for build-ing into an existing AF power amplifier. It is based on a re- cently introduced integrated circuit, the Type TCA5500 or TCASSSO from Motorola. This double AF amplifier chip with inputs for balance, volume, and bass and treble controls forms a sound basis for a good quality […]

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Digital Volume Controller Circuit

The circuit shown here is based on the switching action of transistors. Volume of a stereo deck can be controlled with the help of a potentiometer which changes the resistance between the output of the preamplifier and input of the amplifier. This can be done with the help of decade counter, IC.4017 and some transistors. […]

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