Make a simple audio amplifier using lm386,

This is a simple audio amplifier circuit that is easy to build and has few components. This circuit is built around the LM386 audio amplifier integrated circuit, that can be used with a small 9 volt Battery Operated, Current use as little as 5 milliamps. and amplification up to 500 mW.

The LM386 is an audio amplifier designed for use in low voltage consumer applications. 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.

This audio amplifier module can be used to play your FM receiver kit, make infrared based music transmitter and receiver, etc.

1. Circuit diagram

Component list:-

1. IC lm386

2. capacitor-0.01uf,0.1uf,220uf,10uf

3. resistor-10ohm,

4. battery, speaker, 3.5mm cable

2. Another circuit diagram

Component list:-

1. IC lm386

2. resistor-10r

3. variable resistor- 10k

4. capacitor-10uf,0.047uf,100uf(4)

5.Battery-9V, MIC OR 3.5mm Cable

3. Here is Another circuit diagram

Component list:-

1. IC-lm386

2. Capacitor-10uf,2.2uf(both 50v),470uf,220uf(both 25v),0.1uf,0.22uf,

3. vr-10k preset

4. Resistor-1k,22e,2k2,

5. Speaker,3.5mm cable,battery-9v,switch, led.

4. This Circuit  diagram in using two transistor(BC547)

                                                                                                                                      

      Components list:-

1. Resistors (2.2kΩ; 3.3kΩ; 470kΩ; 220kΩ; 1.2kΩ)
2. Capacitors (0.1µF x 2; 10µF,16V)
3. Transistors (BC547 x 2)
4. Condenser mic
5. Speaker (8Ω, ½ Watt)

5. this another circuit in using NE555

Component list:-

1. IC NE555

2. capacitor-3.3uf,0.1uf(2),10uf,0.047uf,470uf,100uf

3. rseistor-1.2k,10ohm,

4. vr-10k

5. led. speaker, battery, 3.5mm canle