100 DB PAM8403 Super mini digitális erősítő kártya 2 * 3 W D osztályú digitális erősítő kártya hatékony 2,5-5 V USB tápegység
100PCS PAM8403 Super mini digital amplifier board 2 * 3W Class D digital amplifier board efficient 2.5 to 5V USB power supply
PAM8403 Mini D digital power amplifier board
1. Working voltage: 2.5V-5.5V. Note: the power supply voltage should not exceed 5.5V, and the positive and negative power supply should not be connected inversely.
2. Speakers with: 4-8 euros, recommended: 4 euros; Horn power: 2-8W.
3. It can be powered by COMPUTER USB port 5V power supply, mobile phone charger USB port 5V power supply or lithium battery power supply.
High efficiency 90% , 4 ω load and 5V power supply conditions, can provide 3W (left channel) 3W (right channel) output power. The efficiency of class A and B power amplifiers is only about 30% , and class D power amplifiers are highly respected under the current green trend.
5. Class D power amplifier efficiency is extremely high, will not affect the sound quality because of the temperature rise, and do not add heat sink, occupy a small volume.
 
Application:
LCD TV, monitor
Laptop computer
Portable loudspeaker
Portable DVD player, game console
Cell phone/speakerphone
 
2. Precautions for use:
Connect the speaker first and then the power supply, otherwise it is easy to damage the chip;
Because the digital volume control in the module has a large gain, do not let the audio signal input too large to cause the signal cutting limiter.
 
 
 
 
 
 
 
 
 
1005003661249987 - supersel