How to make a sound amplifier?

Very often connecting the speakers to any device requires a separate amplifying device. But what should I do if the base amplifier fails? You can try to take the initiative in your own hands and create your own device. How to make a sound amplifier? Having basic knowledge in working with printed circuit boards, you can make such a device yourself. And we'll tell you about this in this article.

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Make the amplifying device

Absolutely any assembly must be accompanied by the search for the necessary parts and tools:

• First you need to get a soldering iron with a thermally stable support. The best soldering stations are suitable, which can be easily found and purchased at any radio amateur store.
• If the assembly process at home is done only to test the circuit or use it for a short time, then the option with wires is perfect. But such a method will require a larger working space to accommodate parts.
• The printed circuit board guarantees the compactness of the device and the convenience in the subsequent operation. Budget popular amplifier for a pair of headphones or speakers is very easy to recreate based on a chip that provides a basic set of components.
• To such a scheme, you just need to add a couple of resistors and capacitor elements.

The cost of mounting the board is much less than the market value of the finished amplifier from any hardware store, but the functionality is limited by the capabilities and tools that you have available.

Important! Do not forget about the features of small monoblocks, which you will collect with your own hands. The circuit generates a considerable amount of heat during operation, so it is necessary to exclude any contact of this part with other components of the device. To remove heat, you can use a radiator grille.

The next feature is the low voltage threshold. This feature allows you to use the amplifier anywhere.

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How to assemble a laptop amplifier at home?

First you need to understand: do I have to create such a device at all? Assembling in the home can be required for the following cases:

• The built-in audio system is out of order and you need a new one.
• The quality of the transmitted sound does not satisfy your needs.

Important! For these cases, the simplest amplifier element is needed, the power of which is about 2 watts.

Tools for running

First you need to acquire the tools that each self-respecting radio amateur has:

1. Pliers.
2. Fee. Soldering iron( soldering station).
3. Enclosure and radio components.

Important! We need polar and nonpolar capacitors, as well as a set of resistors. We recommend to acquire several packages with different denominations. It is also necessary to purchase a switch and a jack, which will be needed to exit the loudspeaker.

After the preparation, you can proceed with the "creation" of the device:

1. Download the necessary scheme from the Internet with the. lay format.
2. Find a radiator, the size of which will keep the temperature below fifty degrees Celsius.
3. Open the downloaded schema, arm with tools and start assembling.

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Headphone jack

The simplest device is required to have a small power and the necessary power consumption. Consider the ideal case:

1. The device is powered by finger-type batteries or from a standard 3-volt adapter.
2. It's best to choose a quality microcircuit. An excellent candidate is the TDA 2822 scheme or its analogs.
3. The following radio components will be needed: four 100-μF capacitors, a copper wire with a length of up to 30 centimeters, and a jack socket.

Having all these things, you can safely download the necessary scheme from the Internet and start working.

Important! If you want to fit this whole thing in a small closed case, you will need to acquire a heat sink.

If you are a car enthusiast, then it will be useful for you to know how to assemble a sound amplifier yourself into a car.

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Device for the subwoofer

If the previous cases did not cause any questions for you, then everything should go smoothly. The low-frequency amplifier at home can be done on the basis of the TDA 7294 chip. Here you will have powerful acoustics with good bass and a great auto amplifier.

You will need:

• Power supply for three dozen volts. The device must be bipolar.
• Condensers and resistors, the ratings of which will be indicated on the diagram of the assembly drawing.

Important! Such amplifiers work fine at low frequencies and give an output power of up to 100 watts.

Small-size amplifier for small speakers

The fact that the device will be fixed, only to your advantage. This will expand the choice of power adapters, any available on hand. Small size and nice appearance of the budget device can be provided if you follow the following rules:

• Work is necessary with a very high-quality printed circuit board.
• You need to use a body made of metal or plastic, which should be quite strong.
• It is necessary to use a soldering iron skillfully not to smear the device with solder.
• It is advisable to use only ready-made sockets.
• The radiator should not touch anything other than the chip itself.

Amplifier on a lamp

Such devices are quite expensive, if you do not immediately have the necessary "sources".Radio amateurs of the old school always store in their closet a small collection of lamps and other useful components.

How to assemble the amplifier? In general, to do this is not so difficult, if you are ready to kill a few days of time to find a good scheme. The circuit of such an amplifier is unique each time and will always depend on the source of the sound itself. Other factors are the dimensions, and power, and related technical parameters.

Important! We recommend not to undertake the creation of such a device, if you doubt your capabilities.

The beauty is that the result depends only on your interest and skills, which makes the entire process just more interesting.