Monday Kids Electronic Funny Kits Voice Control LED Melody Light DIY Kits Production Suite Small Electronic Learning Electronic Kits

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$1.46

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Details

Brand Name: Monday Kids
Supply Voltage: 3-4.5V
Condition: New
Type: Voltage Regulator
is_customized: Yes
Model Number: Electronic Funny Kits
Application: speaker

Not:This module is DIY Kit ,Not a finished product.

Circuit function:

As the music or other sounds sound, the LED lights follow the rhythm of the sound (the speed of the sound) and shines. After the welding is successful, you can feel the beautiful melodic combination of sound and light.

Operating Voltage:

3-4.5V, when you need a higher working voltage, please add a current limiting resistor to the LED, generally tens of ohms to 100 ohms.

Circuit principle:

The voice-activated LED melody lamp circuit is composed of a power supply circuit, a microphone amplifying circuit and an LED lighting indicating circuit. The power source is input by JP, and the C1 filter is used for the circuit. The MIC converts the sound signal into an electrical signal, which is coupled to Q2 by C2. The amplified signal is sent to the base of Q1, and the LED is illuminated by Q1. The louder the sound, the higher the brightness of the LED.

Installation Precautions:

The electret microphone has positive and negative points, and the end connected to the aluminum case is the negative end. During installation, the cut resistors are soldered to the two poles of the microphone and then mounted on the board. The power supply has positive and negative, and the DuPont line is generally used to connect the power supply. It can also be connected directly with a 3-4.5V battery case depending on the situation.