Presented Here is the Guitar Amplifier. The best part of this project is that it is recycled and portable. It is made up of old chocolate box. It is portable and easy to carry. It has various types of facilities. It has volume control to increase or decrease the volume.

Besides Guitar Amplifier, it can be used as versatile speaker. Just give input at the jack with the help of AUX Cable. You can also use it as a speaker. It has a very loud voice. So, it is advisable to keep its volume low.

The circuit for this Guitar Amplifier is extremely simple and beginners can also try this out. The circuit is built around LM 386 IC which is very well known in the field of audio circuits.

I am sure you will find this instructable interesting and worthy!!!!

DON'T FORGET TO FAVORITE AND VOTE THIS INSTRUCTABLE!!!!

Step 1: Materials Required

1. LM 386

2. 220uF Capacitor

3. 0.47uF Capacitor

4. 10 ohm Resistor

5. 10k Potentiometer

6. 2 pin Coonnector x 2

7. 3 pin connector

8. 9v Battery

9. Battery Snapper

10. Case

11. Loudspeaker

12. Some Tools

13. Female Audio Jack

Step 2: Circuit Diagram

The circuit is built around LM 386 IC. LM386 IC is the low voltage audio power amplifier. It is suitable for battery-powered devices such as radios, guitar amplifiers, and hobby electronics projects. The IC consists of an 8 pin dual in-line package (DIP-8) and can output 0.25 to 1 watts of power depending on the model using a 9-volt power supply.

Following the circuit diagram you can make your circuit for the Guitar Amplifier.

Here 10k Potentiometer is for volume control.

Female Audio Jack should be used at audio input.

lm386.pdf
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Step 3: Circuit on Breadboard

Now, following the Circuit diagram we will try to make the circuit on breadboard. Let's Get started.

First of all, mount LM386 IC on Breadboard

Connect its pin no. 2 and 4 with the help of a wire.

Step 4: Still Making....

Now, attach a 0.47uF Capacitor such that its positive terminal connects to pin no. 5 of the IC.

Then connect 10 ohm Resistor across pin no. 4 of the IC and negative terminal of 0.47uF Capacitor.

Step 5: Work in Progress

Now, connect 220uF Capacitor such that its positive terminal connects to pin 5 of the IC.

Attach a 2 pin connector for output at speaker with at one terminal negative terminal of 220uF Capacitor and other connected to pin no. 4 of the IC.

Step 6: Somewhat Completed

Now, attach a 3 pin connector for potentiometer. Second terminal of connector is to be connected to pin no. 3 of the IC.

The last terminal (from any side) should be connected to pin 4 of the IC.

Step 7: Power Supply

Now, power supply is to be given at pin 6(Positive) and pin no. 4 (Negative) of the IC. 9 Volt Battery is to be connected.

Audio input is available at 10k potentiometer and pin no. 4 of the IC.

Step 8: Make It on Circuit Board

Now, assemble the components on the circuit Board according to the circuit Diagram. Here connectors are given for speaker, potentiometer and audio input.

Wait for the next step till you connect the battery snapper.

Step 9: Switch

Connect the negative terminal of the Battery Snapper to the pin no.4 of the IC. But you have to connect a switch between the positive terminal of battery snapper and pin no. 6 of the IC.

Now, connect a switch in between such that when you turn on the switch you can get the power.

Step 10: Case

I am using a Chocolate Box as a case. You can use other items but make sure that the material is non conductor of electricity.

Step 11: Holes

Make holes on the cap of the box for switch, potentiometer and female audio jack.

Step 12: For Speaker

Put the speaker on the cap of the box where you want to fix it and make the outline of the speaker. Now, make the dots inside the circle you have made. These will be the holes for the speaker's voice to come out.

Step 13: Make Holes

Now, make holes the place where you have dotted and it is better to keep the holes' size smaller.

Step 14: Connectors

Make sure you have long connector wires to make connections far from the circuit board.

Step 15: Solder

Solder the connector wires to the components. Be aware while soldering potentiometer and audio jack. Solder the wires as per the polarity of audio jack.