Mini High-Gain Stereo Audio Booster With Volume Control For TV Audio Player Amp

in this video we're gonna talk about how to create an audio amplifier circuit using the lm386 operational amplifier so here is a block schematic of that device pins 1 & 8 are used for a gain control pin 2 is the inverting input pin 3 is the non-inverting input pin 4 is connected to ground which you can also connect it to the negative terminal of the battery pin 6 you would connect that to the positive terminal of the battery pin 7 is the bypass which you're going to use if you want to increase the gain of this device and pin 5 is the output now here's some common lm386 devices there's the lm386 and - one there's also the industry and also n - for the n - 4 can use a higher supply voltage with the n - 1 the typical supply voltage is around 4 to 12 volts with a maximum supply voltage of 15 volts with the lm386 and - 4 you could use a high voltage up to 18 volts now here are some other cha