DIY headphone amplifier

Often there are situations when the speakers are not able to correctly play your favorite music. The situation is quite common. Most often with such lovers of classical chamber music. This genre, due to its age, was recorded on old records that are difficult to digitize. That is why such records sound the worst. The following method is suitable for beginners in electronics, and people who have never encountered a soldering iron and rosin. Despite the fact that the product comes out very simple, the sound quality can be compared with high-quality Chinese devices.

Amplifier advantages

Of the benefits stand out:

• The ability to hear the full potential of the device;
• If the amplifier was assembled correctly, most likely, there will be no complaints in the work;
• Cheap device assembly cost;

If these advantages really seem interesting, and the need for an amplifier pushes for self-assembly, you can assemble the device yourself.

What materials and tools will be needed

In order to assemble this device, it is enough to do with a number of small radio components, which, if desired, can be found in any old tape recorder or other equipment.

1. It is best to initially purchase dip 8 chips. They will also need panels.
2. As resistors, it is better to buy at 0.25W.
3. Capacitors must match the voltage of 35V, or more.
4. If you plan to install the LED, it is best to pre-purchase the holder.
5. Additional tools for tinning will also be required.
6. Pay.
7. Tools for soldering and marking.
8. Iron.
9. Connectors.

First of all, you need to put forward the requirements that are imposed on the manufactured product. According to most experts, the amplifier should have the following characteristics:

1. Produce stereo audio quality.
2. Have a connection to an external power supply so that you do not have to spend money on spare batteries.
3. Have small dimensions.

In order to combine quality and planned dimensions in a small format, it is best to use CMoy Pocket Amplifier. In the free access there are a large number of reviews and convenient schemes that can be used for this amplifier.

Attention! It should be understood that this board is useful only if you plan to listen to household music and audiobooks. For better equipment, more serious sound amplification is required.

Nuances and important points before work

To work did not go downhill, you must first make a fee. As everyone knows, it is fairly easy to make using the following materials:

• Textolite.
• Hacksaw.
• Printer.
• Glossy paper.
• Old iron.
• Sandpaper
• Acetone.
• Rag.
• Chlorinated iron.
• Capacity where pickling will occur.

If the worker does not have experience in etching, it is best to turn to video resources, which will clearly indicate how to properly carry out these works. But for those who know how to etch, it is recommended to strengthen their knowledge with step-by-step instructions.

1. Initially, the necessary shape for the future device should be cut from the PCB. Edges that will look uneven - handle a file.
2. After that we process textolite with sandpaper to erase a layer of copper. Next, rinse our board with a soap solution.
3. Next you need to print the layout of the future amplifier board on a piece of glossy paper.
4. Put a piece of white paper on the printed image of the board. It should be remembered that textolite should be under the gloss.
5. We spend a hot iron on this "sandwich" until a sheet of paper begins to turn yellow.
6. We press textolite with a piece of paper with something heavy.
7. After that we lower textolite in capacity with boiled water. Storage time should not exceed more than 10 minutes.
8. As the water cools, remove the paper under the tap.
9. If the image turned out to be fuzzy and bad, wash off everything with acetone and repeat all actions with transferring the picture.

After the image of the board has been transferred to textolite, it is necessary to dissolve ferric chloride in water. To do this, refer to safety. No need to pour chlorine with iron. It is best to place the powder in water. In color, the solution should be black to brown.

Important! When a copper precipitate falls out, it is necessary to pull the board out of the water and rinse it with water or with acetone. Treat the entire surface thoroughly. If the drawing came out clear, not blurry, the preparation for soldering was successful. If not, you need to be patient and repeat all actions.

Amplifier for speakers do it yourself: step by step

After the layout of the board is ready, it is necessary to make holes in the PCB. This can be done with a simple drill with a very narrow diameter.

When all the necessary holes have been drilled, it is better to start with the tinning of the part. The process of tinning is quite easy and entertaining. If there is no experience in this lesson, you should turn to more knowledgeable specialists.

First of all we begin to solder the resistors. They are set in order to reduce background noise. Of course, you can do without them, but the quality may suffer.

After that, install all the inputs and outputs of the amplifier, solder the LED. Install the microcircuit together with the panel.

At the end you can already install capacitors.

Attention! When the whole process outlined in the diagram is complete, you need to somehow insulate the entire device. It is better to use special plastic containers. Perfect for such purposes are suitable miniature fishing cases.

If the work was successful, you should test it by connecting to your favorite tracks or audiobooks. Make the amplifier itself is not difficult.