LM386 Audio Amplifier Module
The LM386 Audio Amplifier Module is a compact, low-power audio amplifier designed for DIY electronics, Arduino projects, and portable audio systems. It is widely used by students and engineers in Bangladesh due to its simple design, low cost, and high performance.
This module is built around the LM386 IC, a popular low-voltage audio amplifier that operates efficiently with minimal external components. It is ideal for amplifying weak audio signals from microphones, sensors, or microcontrollers into clear sound output for speakers.
Whether you are building a mini speaker system, voice amplifier, FM radio, or Arduino sound project, this module offers a reliable and beginner-friendly solution.
Features:
- Low voltage operation (4V – 12V)
- Built-in LM386 audio amplifier IC
- Adjustable gain (20x to 200x)
- Compact and lightweight design
- Suitable for 8Ω speaker output
- Minimal external components required
- Perfect for Arduino and DIY electronics projects
Specifications:
| Parameter | Value |
|---|---|
| IC Used | LM386 |
| Operating Voltage | 4V – 12V DC |
| Output Power | ~0.5W – 1W |
| Gain Range | 20 to 200 (adjustable) |
| Speaker Impedance | 4Ω – 8Ω |
| Input Type | Analog audio signal |
| Board Size | Approx. 45mm x 20mm |
| Application | Audio amplification |
Applications:
- Arduino audio projects
- DIY speaker systems
- Portable amplifiers
- FM radio circuits
- Voice amplification systems
- Educational electronics projects
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