Sound Sensitive 12V Bulb Control Circuit diagram - Simple Electronic Project





Diagram of Sound Control Light Circuit diagram


Components Needed for this Project:

You can get the components from any of the sites below:

  1. BC547 Transistor [See Buy Click Amazon]
  2. IRFZ44N MOSFET [See Buy Click Amazon]
  3. MIC Sensor [See Buy Click Amazon]
  4. 0.1uF (400V) Capacitor [See Buy Click Amazon]
  5. 12V Light [See Buy Click Amazon]
  6. 10k Ohm Resistor [See Buy Click Amazon]
  7. 1M Ohm Resistor [See Buy Click Amazon]
  8. 75k Ohm Resistor [See Buy Click Amazon]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

Related Basic Electronic Mini Project Circuit Diagram:


Working Principle




Frequently asked questions

How does sound detection work?

The sound sensor has a thin piece of material called a diaphragm that vibrates when hit by sound waves (similar to how your eardrum vibrates when hearing a sound) signal wave generator. The vibration of the diaphragm is converted by the sensor into an electrical system.

Which sensor is used to detect sound?

A sound sensor is defined as a module that detects sound waves through their intensity and converts them to electrical signals. sound sensor consists of an in-built capacitive microphone, a peak detector, and an amplifier (LM386, LM393, etc.) that's highly sensitive to sound.

How are smart bulbs controlled?

Once installed, the switch is connected to an app on a smartphone or tablet system. The switch, and therefore the light connected to it, can then be controlled remotely through the app or smart speaker sound generator.

What is the LED controller?

LED controller is a special chip processing control LED lights display function of the switching system. The controller will control the driver circuit according to the program input in the advanced circuit diagram.

What sound does a bulb make?

Unlike incandescent and fluorescent bulbs, LED bulbs do not have filament or firing arcs, which means that they have no moving parts that can cause a buzzing sound generator. However, they can still produce a buzzing sound due to improper dimming or electromagnetic interference from other device systems.

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