Set 5 mô đun khuếch đại âm thanh 5v Dc Pam8403 Lcd Class-d J7B2 tại Lotte Market

Giới thiệu Set 5 mô đun khuếch đại âm thanh 5v Dc Pam8403 Lcd Class-d J7B2 tại Lotte Market

specification:
brand new and high quality.
products: pam8403 mini d class digital amplifier board
1. operating voltage: 2.5v-5.5v. note: the power supply voltage should not exceed 5.5v, the power supply should not be reversed.
speaker with: 4-8 europe, recommended: 4 europe; speaker power: 2-8w.
3. can use the computer usb port 5v power supply, or use the phone charger 5v 5v power supply, you can also use the lithium battery power.
4. high efficiency 90%, 4ω load and 5v power supply conditions, can provide 3w (left channel) +3 w (right channel) output power. class a, b and other power amplifier efficiency is only about 30%, d class amplifier in today's green trend under the highly respected.
5.d class amplifier power is extremely high, not because of temperature impact sound quality, and do not add heat sink, take a small volume.
of the sound suppression, in the absence of receiving input audio, the ear close to the speaker can not hear any noise, two-channel stereo, 5v power supply can output 3w +3 w power, can drive 4ω, 8ω small speakers, the output power large, energy enough, good sound quality. unique non-lc filter d class digital power board, you can directly use the computer's usb power supply. double-panel wiring, properly solve the wiring caused by the ground potential balance and channel crosstalk between the ultra-miniature design, can be easily placed in a variety of digital products within the small space, high efficiency amplification. all the use of machines for the whole plate welding, welding quality non-manual soldering iron comparable!
the module length and width are 21 mm * 19 mm
buyer tips: this module does not come with any technical information parameters please the majority of buyers to buy thank you!
this module is only to diy enthusiasts experiment with your product requirements such as higher please carefully shot
it is recommended to use a separate 5v input
note: the left and right channel output ”negative” can not be connected together, otherwise it will burn ic, and power should be connected before the first speaker (load).
in the case of
rated working voltage 2.5 ~ 5v, the limit working voltage 5.5v.
application:
lcd tv, monitor
laptop
portable speakers
portable dvd player, game console
phone / handsfree phone
2. precautions for use:
first connected to the speaker and then connected to the power, or easy to cause damage to the chip;
since the digital volume control in the module has a large gain, do not let the audio signal input too large and make the signal cut.
package include:
5 × pcs
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