Introduction: Three Loudspeaker Circuits || Step-by-Step Tutorial

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Loudspeaker Circuit strengthens the audio signals being received from the environment onto the MIC and sends it to the Speaker from where amplified audio is produced.

Here, I will show you three different ways to make this Loudspeaker Circuit using :

1. Single Transistor

2. Two Transistors

3. LM 386 IC

Step 1: Components Required

These are the Components Required for making the circuit :

1. Using Single Transistor

• Transistors: BC 547

• Resistor: 10 K Ω

• Condenser MIC

• Speaker

2. Using Two Transistors

• Transistors: BC 547 (2)

• Resistors: 10K Ω

• Condenser MIC

• Speaker

3. Using LM 386 IC

• LM 386 IC

• Resistor: 10K Ω

• Capacitors: 220 μF, 100 nF (0.1 μF)

• Condenser MIC

• Speaker

Other Requirements :

• Battery: 4.5V

• Breadboard

• Breadboard Connectors

Step 2: Circuit Diagram

These are the Circuit Diagrams for making the circuit using :

  • Single Transistor
  • Two Transistors
  • LM 386 IC

Step 3: Step-by-step Tutorial

This video shows step-by-step, how to build all these circuits.