Nsc low voltage audio power amplifier,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The zobel network r2 and c4 must also be installed if you are using the lm386 as an amplifier. Though the gain of this ic is set at 20 internally, it can be raised almost 10 times higher that is up to 200, just by introducing a resistor and a capacitor across its pin 1 and 8. This little amplifier circuit can be actually used for all applications that require a small audio signal to be amplified to a reasonably high audible level. The projects are endless for this low voltage mono audio amplifier board. Lm386 audio amplifier circuit are you looking for a small audio amplifier circuit thats. Lm386 stereo amplifier in bridge 2 watts electronics. Lm386 chip comprises of 8 pins where, pin 1 and 8 denotes the gain control of the amplifier, and you can adjust the gain by placing resistor or capacitor in between these two terminals. The inputs of the ic operate with respect to the ground. This ic is available in the package of mini 8pin dip. Lm386 based audio amplifier full project with circuit. How to make an lm386 audio amplifier circuit youtube. Description download lm386 audio amplifier report comments. In this tutorial, ill first show you how to make a basic audio amplifier with an lm386 ic to demonstrate the minimum parts needed to build a functional amplifier.
Specifications power supply 6 12 vdc output power 1 w, 8 ohm the quiescent power drain is only 24 mw when operating from 6 vdc selfcentering output quiescent voltage onboard preset to adjustread more. The lm386 is a power amplifier designed for use in low voltage consumer applications. Hence we amplify it by using the lm386 low voltage audio amplifier ic. This is a signal amplifier in the nonreturn phase form. When the system is powered on and proper audio input is given at the input, the lm386 amplifier the input signal by a factor of 200 and drives the output speaker. The ic lm386 is a lowpower audio amplifier, and it utilizes low power supply like batteries in electrical and electronic circuits. How to use the popular lm386 class ab audio amplifier ic to build a simple mono 1 watt audio.
The gain range is 20 to 200, gain is internally set to 20 without using external component but can be increased to 200 by using resistor and capacitor between pin 1 and 8, or just with a capacitor. The lm386 is a low voltage audio amplifier ic manufactured by national semiconductor. Lm386 audio amplifier this project shows how to build an audio amplifier based on lm386 ic. Here is a simple lm386 based audio amplifier circuit with the authors prototype shown below. Lm386 pdf, lm386 description, lm386 datasheets, lm386 view. The lm386 is a low power audio frequency amplifier which is very commonly used in small audio amplifiers. The ic consists of an 8 pin dual inline package and can output 0. Make your own amplified mini speaker powered by 5 vdc. Circuit diagram of the lm386 based audio amplifier is shown in fig. View similar products to the low voltage mono audio amplifier board njm386d lm386. An lm386 is a very popular and widely used audio amplifier chip that permits a user to amplify sound. The audio amplifier using lm386 is a low power circuit that can deliver a maximum power of 1 watt 1w and can be used in a wide range of. Lm386 datasheet pdf, lm386 pdf datasheet, equivalent, schematic, lm386 datasheets, lm386 wiki, transistor, cross reference, pdf download,free search site, pinout electronic component search and free download site. Lm386 snas545c may 2004revised may 2017 lm386 low voltage audio power amplifier 1 1 features 1 battery operation minimum external parts wide supply voltage range.
In this tutorial, ill show you how to build a great sounding audio amplifier with the lm386 low voltage audio power amplifier. Nevertheless, you can use the section of lm4862 stage after the r3 volume. Lm386 is one of the important ic in audio field and is featured commonly for portable speakers and laptop speakers. Hi every body i want to design an audio amplifier circuit using lm386 and lm358. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. This lm386 based audio amplifier is built around the amplifier lm386, an 8ohm, onewatt speaker ls1, four capacitors and a few other. If you are using it as a part of an oscillator circuit then those two components are unnecessary. The lm386 is an integrated circuit containing a low voltage audio power amplifier. Build a great sounding audio amplifier with bass boost. Pdf guitar audio amplifier using ic lm386 researchgate. Low voltage mono audio amplifier board njm386d lm386.
The ic lm386 is a power amplifier used for amplifying small audio signals with low supply voltages. It is manufactured and design by texas instruments. Lm386 datasheet, lm386 pdf, lm386 data sheet, lm386 manual, lm386 pdf, lm386, datenblatt, electronics lm386, alldatasheet, free, datasheet, datasheets. Here is lm386 stereo audio amplifier circuit, 2 watts. It can be used for either driving speakers or headphones.
Lm386 is a low voltage audio amplifier and frequently used in battery powered music devices like radios, guitars, toys etc. Low voltage audio power amplifier, lm386 datasheet, lm386 circuit, lm386 data sheet. Slider tagged amplifier, analog design, audio, lm386. Lm4862 amplifier circuit a better lm386 alternative. Lm386 audio amplifier circuit circuit diagram images. But the audio signals produced by the arduino on pin 9 will not be audible much. This portable amp is an open hardware project designed by electrosmash using only free opensource tools. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. Lm386 based audio amplifier full project with circuit available. The audio amplifier will be a selfcontained, batteryoperated component. A simple but efficient audio amplifier is designed using lm386 audio amplifier ic.
Lm386 audio amplifier circuit working and pin of lm 386. Lm380 1features description wide supply voltage range. The ic consumes very less power and hence can be operated using a 9v battery easily. This is a build video of a very simple audio amplifier based on the lm386 chip. The circuit is very simple and construction is easy on a breadboard. On ebay, it goes by various names and descriptions such as lm386 audio amplifier module 200 times 5v12v input 10k adjustable resistance. Lm386 low voltage audio power amplifier december 1994 lm386 low voltage audio power amplifier general description the lm386 is a power amplifier designed for use in low voltage consumer applications. Lm386 audio amplifier this simple amplifier shows the lm386 in a highgain configuration a 200. Browse other questions tagged amplifier audio lm386 bypasscapacitor or ask your own question. Lm386 low voltage audio power amplifier general description the lm386 is a power amplifier designed for use in low voltage consumer applications. Lm386 datasheet, lm386 datasheets, lm386 pdf, lm386 circuit. It is suitable for batterypowered devices such as radios, guitar amplifiers, and hobby electronics projects. Maximum gains between 20 and 200 may be realized by adding a selected resistor in series with the same 10 uf capacitor.
The working of the circuit is very straight forward as all the work is done by the lm386 ic itself. I want to pick up a sound using a small microphone link below and hear the sound through a set of head phones. The lm386 is a power amplifier designed for use in low. Pdf lm386 audio amplifier report free download pdf. There are three versions of this ic, lm386n1, lm386n3, lm386n4, capable of providing power output of 0. I built about a dozen different audio amplifier circuits with the lm386 but most of them had way too much noise, popping, and other interference. Report lm386 audio amplifier report please fill this form, we will try to respond as soon as possible. You can have my lm386s when you pry them from my cold dead hands. For a maximum gain of only 20, leave out the 10 uf connected from pin 1 to pin 8. A radio receiver circuit is one of these examples, as shown below using a tiny zn414 am receiver. Pin diagram and circuit diagram of lm386 audio amplifier circuit. Great sounding lm386 audio amplifier with bass boost.
The supply voltage can be a 6, 9 or 12 volt battery. Unfollow lm386 audio amplifier to stop getting updates on your ebay feed. The amplifier shown above is designed for a gain of 200 and the vdd pin 6 is powered by the 5v pin of the arduino. There are a number of versions of the lm386 ic and lot of suppliers only offer the n1 version.
And feel free to leave a comment if you have any questions or need help with. The lm386 ic is unique in that the gain can be modified by changing resistor r2 and capacitor c2. The lm386 audio amplifier module is a mono audio amplifier based on the lm386 chip. It is built around popular amplifier lm386 ic1, an 8ohm, onewatt speaker ls1, four capacitors and a few other components. The paper proposes the development of a guitar audio amplifier that is made from a lowpriced ic lm386 chip, this amplifier can also be used for radios and other electronic projects ic lm 386 is a. How to build small, simple audio amplifiers using ic lm386. The integrated chip lm386 is a low power audio frequency amplifier requiring a low level power supply most often batteries. Make a great sounding lm386 audio amplifier with bass boost. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will. Created feb 16 2014 this is a very basic integrated circuit amplifier. Next, from the lm386 data sheet available free from ti, i can see that the capacitor at pins 18 is setting your circuit up for the maximum gain of 200. Lm4871, ad620, ic6283, jrc4558, where to use the lm386 audio amplifier. They can also be used in tv sound systems, line drivers, servo drivers, ultrasonic drivers, etc. In an amplifier circuit, the lm386 takes an audio input signal and increases its.
Lm386 low voltage audio power amplifier datasheet rev. Simple arduino audio player and amplifier with lm386 use. The tiny audio amplifier kit is a good choice for battery operation. To make it stereo, just build an amplifier to each channels, left and right. Lm386 low voltage audio power amplifier echelle inconnue. K application notes gain control to make the lm386 a more versatile amplifier, two pins1and 8 are provided for gain control. Use the usb port on your computer to make your own computer speaker. Lm386 audio amplifier circuit latest free electronics. To begin with, the signal goes to the input pin 3, noninverting input.
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