10 pcs lot PAM8403 mini D class digital amplifier board PAM8403 amplifier board
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Description
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. 2. 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%, 4? 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. 6. Power amplifier board built-in de-noising circuit, power is turned on / off without puff noise; module with short-circuit overcurrent protection and over-temperature protection. 7. Board size: 21 * 19 (mm)
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