DA2822M Power Amplifier Kit KA2284 Level Indicator Module BTL USB Power Supply Audio Speaker

Feature: The amplifier uses the TDA2822M for the amplification chip, this chip is a dual-channel single-chip power amplifier integrated circuit, usually used for audio amplifier in the pocket cassette player (WALKMAN) tape recorders and multimedia active speakers. Can work in the stereo and bridge amplifier (BTL) circuit form. TDA2822 power amplifier board: Package Name: TDA2822M Amplifier Kit (Need soldering) Working voltage: DC4.5-9V PCB size: 46 * 35mm Speaker diameter: 50mm Speaker power: 0.25W KA2284 level indicator board: 1. Constant current output 2. Wide operating voltage: (3.5V - 12V) 3. The ALC circuit does not need to connect diodes or transistors 4. The bright level can be adjusted 5. The circuit board adopts military grade 1.6MM FR4 sheet 6. PCB dimensions: 40mm * 19mm TDA2822 power amplifier board list: 1 x PCB board 3 x 470UF25V electrolytic capacitor 2 x 100UF25V electrolytic capacitor 3 x 104 ceramic capacitors 1 x USB + 3.5 lines 1 x 50K dial potentiometer 2 x 4.7 ohm resistance 4 x 10K resistance 1 x 8P IC holder 1 x TDA2822 chip 2 x 8 ohm 0.25W 50MM speaker 1 x 0.5 m cable KA2284 level indicator board list: 1 x PCB board 2 x XH2.54-2P curved seat 2 x XH2.54-2P line 1 x 100 ohm resistance 1 x 10K resistance 1 x 2.2UF electrolytic capacitor 1 x 10UF electrolytic capacitor 1 x 103 blue and white potentiometer 1 x KA2284 chip 5 x 5MM green to green LED 1 x 5MM red to red LED Soldered PCB, for reference only.