TF MP3 decoders decoding module of 3.7-5V power supply with 2W mixed with memory play single channel decoding
Factory developed their own, we can rest assured that the purchase
MP3 TF Card decoder board, with TF card, support play MP3 music files, is currently testing 16G TF support, again big also didn't test
3.7 lithium battery or USB power supply 5V,
Board in the upper right corner of the 3 groups of white box to 3 groups at the touch of a button, in the middle a group for the pause button, 2 sets of short by the last song keys, 2 leader by volume + - regulation.
yes Modified their own U disk playback of customer needs, please store the shopkeeper to ask for information, ability is not strong not suggest changes Oh, does the to prevent burning the board, U disk playback suggest using USB 5V power supply, because some old U disk is 5V power supply, does not support the 3.7V lithium battery voltage, so when the battery power supply, resulting in U disk can not play, the new U disk as long as it is available to support 3.7V power supply is available. In normal play.
Take 2 w mono amplifiers, 5 v power supply when the power amplifier output biggest 3 w (recommended collocation 4 o 3 w card small speakers on the horn, good sound quality, sound is very big, if the volume is enough, please directly in 4 o 5 watt loudspeaker, loudly to scare you, absolutely surprise, hey hey. In after 4 o 5 watt loudspeaker, pay attention to the power amplifier chip cooling oh, best to add heat sink)
Customers reflect the amplifier when playing music, there will be a hot phenomenon, power amplifier chips or amplifier tube heat is normal, as long as it doesn't work let go to the big volume, the output terminal of the short circuit horn resistance (0's) will not burn power amplifier chip, can be at ease use.
