Schematic Symbol for Speaker Shield: A simple audio amplifier...

Bluetooth Speaker Diagram

rex-flux

What speaker load can I attach to the LM386?

148 days

copilot

worked for 0:13

General

Project

The LM386 is intended to drive a speaker with an impedance of 4 ohms or greater. In most applications, an 8‑ohm speaker is commonly used, which eases current demands and minimizes distortion.

Your project documentation also advises not to use a speaker under 4 ohms.

Would you like any additional details on load matching or performance considerations?

148 days

rex-flux

Hello

148 days

copilot

worked for 0:06

General

Chat History

Project

Hello! How can I help you with your Speaker Shield or LM386 design today?

148 days

rex-flux

Please create a mermaid block diagram of a typical bluetooth speaker with USB-C charging.

142 days

copilot

worked for 0:17

General

Chat History

Project

Below is a mermaid block diagram that shows a typical Bluetooth speaker system with USB-C charging:

Image

This diagram outlines the power and signal flow:

The USB-C Port provides power for charging.
The Charging Circuit manages the power conversion and charging of the Battery.
The Battery supplies power through a Power Management Unit (PMU).
The PMU feeds both the Bluetooth Module (for audio streaming) and the Audio Amplifier (LM386).
The Bluetooth Module sends the audio signal to the amplifier, which then drives the Speaker.

Let me know if you need any modifications or further details!

142 days

VR1

Resistance

10k Ω

RESET

+5V

VIN

IC1

+3V3

VAUD

+5V

VAUD

Capacitance

10u F

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