LM386 Audio Amplifier Circuit


Posted on Feb 6, 2014

The integrated chip LM386 is a low power audio frequency amplifier requiring a low level power supply (most often batteries). It comes in an 8-pin mini-DIP package. 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. The extern


LM386 Audio Amplifier Circuit
Click here to download the full size of the above Circuit.

al parts shown on diagram 3. 1 can be selected to get the desired gain. Circuit A will give a voltage amplification of 200. Circuit B will give a gain around 50. The circuit C is not for voltage amplification but will raise the bass level by about 5 dB. Take note that the circuit C is to be connected between pins 1 and 5 of the IC.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Live line Detector
Tachometer
Battery Charger Circuit
transistors IR Emitter/Detector with 555 timer alarm
temperature controller using ds1820 and lcd display
Stereo preamplifier with bass circuit
Touch switch using CD4011
Compact DJ Station
Open Decoder Schematics
Simulator Test Tools Speed Circuit Design



Top