keertan kalp 3-Pic Set PAM8403 Board 2 * 3W Class D Digital 2.5V to 5V Power Amplifier Board Electronic Components Electronic Hobby Kit Multilayer PCB

"Feature: Model: pa8403 Power: low power Super size: 1.85 * 2.11 cm Excellent noise suppression, in the absence of circumstances connected to the input audio ear near the speaker can not hear any noise, two-channel stereo, 5 v power supply can output 3 w 3 w power, can directly drive 4, , 8small small speakers, large output power, full of energy, good sound quality. The original digital power board of the non-lc class-d filter can be directly used with the computer's usb power supply. The double wiring of the panel, the wiring correctly resolves the earth potential caused by the balance and crossing of the inter-channel, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency . All using the entire plate welding machine, Common customer issues: 1, 2 * 3 w miniature digital power amplifier board class d power supply can use the computer? Answer: answer: Power amplifier board can use a computer power supply, but will produce noise can be produced (also some customers did not appear murmurs), the best advice of the independent power supply. 2, digital miniature 2 * 3 w class d power amplifier boards with the home speaker is it good? Answer: Answer: Our speaker is only to provide diy players to try, the sound is not particularly good, if the customer's search for loud sound can buy separately. 3, 2 * 3 w miniature class d digital power amplifier board why is there noise after powering the speaker? The answer: 1, whistlers appear, it must be the audio input line, the introduction of shielded wire must be used for the audio input line, and then there is an un hung audio input line to connect the good audio source. 2, it is a type of reason may be that some power supply is bad interference is too large, power supply switch. Good noise suppression, under the condition of the connected input audio, the ears also cannot hear any noise in the speaker, dual channel stereo, 5 v power supply can output 3 w + 3 w power, can be directly driven 4 speakers, 8 small speakers, great output power, energy, The sound quality is good. Original without lc filter class d digital power board, can use the computer's usb power supply directly. The double wiring of the panel, correctly resolves the wiring caused by the potential balance and the crossing between the channels, super mini design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. They are all made from the continuous plate welding machine, Note: Note: The left and right channel output is ""negative"" and cannot be connected together, otherwise it will burn ic, and connected powered speakers (load) must be preceded. Rated operating voltage 2.5 v 5 5 v, operating voltage limit 5.5 v. "