Bảng Mạch Khuếch Đại Âm Thanh Mini Dc 3v ~ 12v 5v 6v Lm386

🎉🎉🎉 Welcome to my shop, wish you have a happy day!!! DC 3V~12V 5V 6V LM386 mini micro audio power amplifier board AMP module 750mW This module is based on the classic design of the chip LM386, strong expansion capabilities, but also has a lot of novel games are played: audio amplifier, headphone amplifier, signal amplification, electret pickup, stealth headphones ... a variety of games are waiting for DIY players Development. Basic parameters: Operating voltage: 3V-12V (voltage below 4V will significantly reduce the sound, the maximum can not exceed 15V); Operating current: 1mA (static) to 150mA (max); Output speaker impedance: 4Ω-32Ω (impedance high-sound, high efficiency, if not confident of their own speakers, you can buy shop selling speakers, the sound is very loud); Support the speaker power: 0.5W-25W (In fact, any power speaker can be used, the volume and the speaker power is not much relationship, as long as greater than the amplifier output rating on the line, a large speaker sound may be larger); Output power: 750mW (max); Volume: 20(L) mm * 12 (W) mm * 7.5(H) mm; Used to do the microphone pre-amplification is very good, very low noise and AC ripple, the output signal voltage greater than 1V or more, to promote the post-amplifier signal value is very strong. Output volume can be fine-tuning range: 0 ~ 100%, on-board only fine-tuning potentiometer, the conventional volume can be directly adjusted by the source control. Package Included: 1x Ultra-miniature LM386 Amplifier Board (not contain other parts)