Introduction: How to Make Simple & Easy Amplifier Using LM386 With High Gain

In this tutorial i will show you how to make a Simple & Easy Amplifier Using LM386 With High Gain. And i also included two alternate circuits with this post.

The Video Tutorial is also embedded along with this tutorial.

Step 1: Parts List

Picture of Parts List

Parts List

1. LM386

2. Resistor

3. Capacitor

4. IC Base

5. Terminal Blocks

6. PCB

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Purchase List or Affiliate Links

Ali Express
1. LM386 - https://goo.gl/hfw9Iw

2. IC Base - https://goo.gl/AUPRRx

3. Complete Amplifier - https://goo.gl/CxfPsD

Amazon Ind

1. LM386 - http://amzn.to/2t1CKFF

2. IC Base - http://amzn.to/2rqTcCc

3. Complete Amplifier - http://amzn.to/2rvuf3N

Amazon USA

1. LM386 - http://amzn.to/2ss5pXe

2. IC Base - http://amzn.to/2ssfLXa

3. Complete Amplifier - http://amzn.to/2rh0NiC

Step 2: Circuit Diagram

Picture of Circuit Diagram

Using the circuit diagram given in this construct your PCB board.

Amplifier Features :

1. Very little parts are required

2. Works with 5 to 12V range.

Note : At 5 volt the amplifier gives out some noise which can be reduced using a Pot. The circuit diagram for the same is given in the next step. For design or circuit diagram which is shown in this step the optimal operating voltage is above 9 volt & below 12 Volt. Above 12 Volt the IC LM386 starts getting heating.

3. Gain is between 20 to 200

Testing :

In the video i have tested the circuit under three conditions

1. Testing with 5 Volt - with 5 volt the output ha some noise in it

2. Testing with 12 Volt - With 12 volt the output is noise free

3. Testing with Volume control

For test results of this amplifier you can watch the video attached with this tutorial or Click Here

Testing begins @4:20

Step 3: Alternate Circuit Diagrams

Picture of Alternate Circuit Diagrams

I have added two extra circuit diagrams.

1st Image - In this circuit there is only one change from the initial circuit diagram. i.e i have added 10uF/16v capacitor to the pin 1 & 8 of LM386

2nd Image - Pin outs of the 1st image in this step

3rd image - In this circuit there is only one change from the initial circuit diagram. i.e i have added 10k pot for the volume control

For test results of this amplifier you can watch the video attached with this tutorial or Click Here

Testing begins @4:20

Thank You for Reading.

For more such projects you can visit my YouTube Channel by CLICKING HERE

Comments

Techno craft (author)2017-06-16

what will be the power output, and what speaker could be used.

You can easily connect two 3 watt 8 Ohm speaker.

I have added two circuits.

1. Circuit shown in the step 2 has a gain of 20

2. Circuit sown in the step 3 has a gain of 200

For results you can watch the video attached along with tutorial.

MakeStuff_MS (author)2017-06-15

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Bio: I like making new things from trash. For more cool content please subscribe to my YouTube channel @ https://goo.gl/BHxFf7
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