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Description
LM386 Amplifier Board Electret Microphone Audio Hearing Aid Amplifier Circuit Module for Electret MIC Amplification
Product Description
Using LM386 amplifying chip, the magnification is 200 times, which can directly drive low-power speakers, suitable for electret microphone head amplification
Practical application
Make a hearing aid for the deaf: the board is connected to the microphone, the power supply, and the earphone is a good hearing aid for the deaf.