The integrated chip LM386 is a low power audio frequency amplifier requiring a low level power supply . The IC is designed to deliver a voltage amplification of 20 without external add-on parts. But this voltage gain can be raised up to 200 (Vu = 200) by adding external parts.
soo today i am going to show you how to make a low frequency audio amplifier using the LM386 .
Step 2: Things you need....
1- LM 386 semiconductor (IC)
1 – 100 uf polarized capacitor
1- 220 uf polarized capacitor
1 – 10 ohm resistor
1 – 10K var.
1- 10 uf polarized capacitor
1 – .047uf ceramic capacitor
1 – 3.5mm stereo jack male
* voltage sourse ( 5 - 12 v )
* soldering rod and wire
* wire stripper
A speaker of your choice for output.
Step 3: Volatge source
ACP-12E Input AC 100-240V/50-80Hz/180mA
OUTPUT DC 5.7V/800mA
Step 4: Circuit DIAGRAM
it is one of 1000.. which i found from google .
very simple.. very easy.. :p
Step 5: Connect the circuit as shown in diagram:
You’ll also learn more as you can see what each component does by removing it or changing its value.
Solder components carefully to ensure there are no shorts, also ensure all connections are made at all points.
Be sure to double check connections to make sure a connection isn't left out.