![]() It is the non inverting pin which is used to fed the audio signal in to the IC's circuitry. Pin2 is a Inverting Input of the IC connected to the ground. These pins can be used to adjust the gain between 20 to 200 Max Output of LM386N-4 is 1000mW on 16V.Also manufactured in VSSOP & SOIC packages.Minimum to maximum voltage gain is from 20 to 200.External circuitry required only few parts.Operated with wide supply voltage from 4V to 18V.The Current consumption is only 4mA in standby mode.Quiescent power is only 24mW on a 6V supply.This article was first published on 28 February 2017 and was updated on 17 April 2019.Advertisements LM386 IC Features / Technical Specifications: His interests include designing electronics circuits. Gorkhali is a regular contributor to EFY. Note.LM386 provides an output of 250 milliwatts to one watt depending on supply voltage and load. This will confirm that your circuit is working and ready to use. You should hear a humming sound from the speaker. Now, take a screwdriver and gently touch it on input terminal pin 3 of IC1. Switch on S1 and keep VR1 to its mid position. Connect the 8-ohm, one-watt speaker to output pin 5 of IC1 through C3. 4: Component layout of the PCB Download PCB and component layout PDFs: click hereīefore using this project, test it using the 6V battery. 3: PCB pattern of the LM386 based Audio Amplifier Fig. Connect VR1 on the front panel for controlling the volume. Fix connector CON1 on the front panel for input and loudspeaker LS1 at the rear side of the box. After assembling the circuit on a PCB, enclose it in a suitable box. VR1 is used to control volume.Ī single-side PCB for LM386 amplifier is shown in Fig. Inverting pin 2 of IC1 is connected to ground and non-inverting pin 3 is connected to the input terminal through VR1. 2: Circuit diagram of the LM386 based audio amplifier Positive side of 6V is connected to pin 6 of IC1 and the other side to ground terminal to pin 4. C4 is connected to the positive terminal of 6V battery and ground. ![]()
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