PAM8403 5V Power Audio Amplifier Board 2 Channel 3W Volume Control USB Power supply wire PC speaker computer

PAM8403 small mini 5 v digital power amplifier board (can be USB powered) (XY) board USES PAM8403 digital power amplifier chip, circuit is simple, reliable work.Working voltage of 2.5 V to 2.5 V, 3 wx2 maximum output, efficiency can achieve 90% above, can use computer USB 5 V power supply, is very suitable for battery and portable electronic products.Bat small size, and is equipped with switch, potentiometer, can follow one's inclinations of the volume, and control the power switch to use and install is very flexible and convenient.Using devices all use the real thing, can be competent for long-term stability.

Operating voltage: 3-5V

Maximum output: 2 * 3 walt

can be directly driven 4 Ω, 8 Ω small speakers, big output power, energy, sound quality is good.

 

working voltage power supply positive and negative don't wrong, otherwise the chip has the potential to damage.

Output to speaker not common grond design, dont connect both channels together, it will damage the chip.

 

The left and right sound channel output end and "negative" can't meet together, otherwise will burn IC, and then good speaker should be taken before electricity (load).