Ic Lm386 Audio Amplifier Circuit. It can easily drive an 8 ohm speaker with a variable gain of 20 to200. This ic is available in the package of mini 8 pin dip.
Voltage gain of this amplifier can be adjusted to 20 and gain voltage will be 200 by connecting external components like capacitors as well as resistors among the pins no 8 and 1. Today we are going to make a simple audio amplifier circuit with lm386 ic. It can easily drive an 8 ohm speaker with a variable gain of 20 to200.
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.
Nowadays we all use class d amplifiers most of the time because it is more efficient small size and most importantly the audio quality is also great. Volume control and gain control is also possible in this. Or it may be a class d amp. We ve used eight ohm speaker one watt speaker four electrolyte capacitors.
