A: Amplifier Board
1. Power amplifier board size: 8.5×5.2CM
2. Fixed hole distance: 7.9×4.6CM
3.Bluetooth 5.0, support button to turn off / boot, support serial port to change the tone volume and off, power on, no call function, the default volume is the largest
4.TX, RX, GND: TTL serial port configuration 9600, N, 8, 1
5.DC24V 4A, the output maximum power 2x30W, power varies with voltage, DC power interface specification 5.5*2.5MM
6. Suitable impedance: 4/6/8 ohm
7. Power supplyDC8-26V, with reverse connection protection, support notebook power adapter power supply
8. Amplifier chipTPA3118.
B: Power Suply
TPA3110 PBTL digital power amplifier board 30W stereo class D power amplifier board Bluetooth 4.2 power amplifier board
This board uses the PBTL typical circuit of TPA3110. Single power supply with anti-reverse connection, universal adapter and switching power supply can be used. Most of the resistance container parts adopt standardized patch technology, and the work is stable. The Bluetooth audio receiving module is designed with a special interface. Built-in 5V voltage regulator circuit, you can DIY Bluetooth speakers. The output power is 30W X 2 (@16V), and the board can be connected to 8 ohm and 4 ohm speakers.
Power supply voltage: 8-25VDC
Power supply current: 2A or more recommended
Output power: 30W X 2 (16V)