**พร้อมส่ง จากไทย** Zerobike PAM8403 วงจรขยายเสียงขนาดเล็ก 2 * 3W Class D 1 ชิ้น by ZEROBIKE
Amplificador Module Pam8403 Audio Mini Micro Amplifier Kit
2-Channel 3W Digital Power Class D Amplifier Board USB DC
2.5-5V
Product Description
PAM8403 module Super board 2 * 3W Class D digital
amplifier board efficient 2.5 to 5V USB power supply
Weight:20 g
Color: as picture show
Size:20mmx20mmx1.5mm/0.79x0.79x0.06(inch) (approx)
Features:
1.Advanced Micro Devices volume: 1.85 * 2.11cm
2.Excellent noise suppression in the case is not connected to
the input audio the ear close to the speaker can not hear any
noise.
3.Two-channel stereo 5V power supply can output 3W +3 W power
can directly drive 4Ω 8Ω small speaker output power full of
energy good sound quality.
4.Unique without LC filter Class D digital power board and can
be used directly to the computers USB powered.
5.Dual-panel wiring properly solve the crosstalk between the
ground potential balance and channel wiring.
6.Ultra-miniature design can easily be placed in the internal
space for a variety of digital products ultra high zoom
efficiency.
7.All using the machine for the entire board soldering hand
soldering iron welding quality comparable!
8.Rated working voltage 2.5-5V limit operating voltage
5.5V.
Note: The left and right channel output of the
negative can not and then together otherwise it will burn the
IC and energized speaker (load) connected before.
Tips: This module power supply should be clean
and have enough power input supply voltage can provide 1A or more
current otherwise blocked due to insufficient power supply sound ;
such as a computer USB port power supply the power supply can be
connected to both ends 470UF electrolytic capacitors otherwise
there will be noise !
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