DIY PCB Project, CPLD/FPGA Coding with VHDL, Arduino Programming Tutorials, PLC Programming Tutorials, PIC Microcontroller Programming Tutorials and Projects, AVR Microcontroller Programming Tutorials, etc.
Pages
▼
Saturday, August 22, 2020
Making A Low Power Audio Amplifier With LM386
LM386 is a low voltage audio power amplifier suitable for AM/FM radio applications, and others portable battery powered applications. It's an 8-pin analog IC supplied with the voltage between 4 to 12 V.
A completed assembling and testing.
The copper soldering side
LM386 comes with both a DIP and a SMD package.
Pin diagram and functions
The voltage gain for this device is 20 when pin 1 and pin 8 are opened. Using an external resistor and capacitor connected between these two pin could increase the gain between 20 to 200.
A typical application from the device datasheet. When pin 1 and 8 are opened the gain is internally set to 20.
I have test my designed circuit on bread board before I decide to design it in software and making a fabrication.
No comments:
Post a Comment