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Audio Amplifier Module LM386 Mono Single Channel[AUD-00041]products model : AUD-00041

Audio Amplifier Module LM386 Mono Single Channel
Price: Unavailable
 
 
Audio Amplifier Module LM386 Mono Single ChannelAudio Amplifier Module LM386 Mono Single ChannelAudio Amplifier Module LM386 Mono Single Channel

Description
If your project needs an audio amplifier, this module should be useful. It is a miniature module for amateur projects. Simply connect a 4-8 Ohm speaker and amplify your sound. It can used with FM receiver kit or WTV020SD-16P music module. You can definitely use this module for other musical projects also. Based on the popular LM386-1 audio amplifier, this tiny PCB module can provide up to 300mW of audio power.  Easily configured for either 20 (26dB) or 200 (46dB) gain.

Features:
On-board LM386 Chip
Gain= 200.
On-board speaker wiring block.
On-board 10K variable resistor, you can adjust the volume with it.
On-board power indicator.
The chip pin leads, can be directly input audio signal
Operating voltage: 4 ~ 12V
Size:41 x13 mm

Pins 1 & 8 of the LM386 amplifier chip are used to set the amplifier gain. If they are left open (unconnected), the gain is set by an internal resistor to 20 (26 dB). If a 10 uF capacitor is connected between pins 1 & 8 the internal resistor is bypassed, and gain is set to 200 (46 dB). An external resistor can be used to set the gain anywhere in between.

This module has a capacitor and a zero Ohm resistor in series between pins 1 & 8, so the gain is set to 200. If you need lower gain (in other words, a less sensitive amplifier) you can un-solder the zero Ohm chip resistor R1, or simply clip it in half wit a small pair of diagonal or flush cutters. Just be careful not to damage the other components on the board.

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