Kit de Eletrónica LED DIY - Controlador de Som e Melodia
Informação do fabricante:
When music or other sounds are heard, the LED lights will flicker with the rhythm of the sound (sound speed). After the success soldering, you can feel the beautiful melody combination of sound and light.
DC3-4.5V. If need a higher working voltage, you can add current limiting resistance to the LED, usually dozens to 100 ohms.
1>. The sound control LED light circuit consists of power circuit, microphone amplifier circuit and LED light indicator circuit.
2>. The power supply is input from JP, and C1 filter power supply path is used. MIC converts the sound signal into an electrical signal.
3>. Then it is coupled through C2 to Q2, and amplified.
4>. Next the amplified signal is sent to Q1 base. Q1 will promote the LED to flicker. The louder the sound, the higher the LED brightness.
1>. The electret microphone has a positive and negative electrode. Its end that is connected with the aluminum shell is the negative electrode.
2>. When assembling , use a shearing resistance foot to solder to the two electrodes of the microphone and then assemble it on the circuit board.
3>. The power supply is positive and negative, and the power supply is usually connected with the dupont line. It can also be connected directly from the battery box of 3-4.5 V.