Although the common Bluetooth speakers on the market are relatively cheap, their sound quality is far from satisfactory and cannot meet people's pursuit of high-quality sound. The fundamental reason is that the Bluetooth speaker box is too small and the speaker is too small, resulting in a serious lack of bass; the resonance of the plastic box causes muddy sound; the speaker is too close and the near-field sound is too narrow, etc. This design reference integrates the MaxxAudio sound enhancement chip NPCA110P, which greatly improves the problems of muddy sound, insufficient bass, and narrow near-field sound.
This document is an engineering report describing backup power supplies utilizing the TOPSwitch-JX TOP267KG. Intended as a general-purpose evaluation platform, this power supply operates over the 110 VDC to 400 VDC input range and provides a 12 V, continuous 40 W output
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