Audio power amplification device with audio isolation

By soldering the audio power amplification chip U1 and the audio isolation amplifier U2 on the same circuit board, the existing audio power amplifier is solved and the complex wiring is complicated when connecting the player, and the effect of simplifying wiring and improving the user experience is achieved.

CN222691705UActive Publication Date: 2025-03-28ZHUHAI SHENZE INTERNET OF THINGS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421363171.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-14
Publication Date
2025-03-28
Estimated Expiration
2034-06-14

AI Technical Summary

Technical Problem

When connecting to the player, existing audio power amplifiers are prone to cause current reflux in the circuit, damaging the player, and require external audio isolators and screw terminals to connect, resulting in complex wiring and reducing user experience.

Method used

An audio power amplification device with audio isolation is designed, and the audio power amplification chip U1 and the audio isolation amplifier U2 are soldered on the same circuit board. The audio isolation amplifier U2 isolates the player's audio signal and then inputs the audio power amplification chip U1 for power amplification.

Benefits of technology

Simplifies wiring between devices, improves user experience, avoids the risk of current reflux damage to the player, and reduces wiring complexity by directly soldering the circuit board.

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Abstract

The utility model discloses an audio power amplification device with audio isolation, and belongs to the technical field of audio signal processing. The first end of the primary side of the audio isolation amplifier is grounded, and the second end of the primary side of the audio isolation amplifier is electrically connected with the output end of the player; the first end of the secondary side of the audio isolation amplifier is electrically connected with the input end INNR of the audio power amplification chip, the second end of the secondary side of the audio isolation amplifier is electrically connected with the input end INPR of the audio power amplification chip, and the power supply input end of the audio power amplification chip is electrically connected with the output end of the power supply module; the output end of the audio power amplification chip is electrically connected with the first input end of the loudspeaker, and the output end of the audio power amplification chip is electrically connected with the second input end of the loudspeaker. The audio power amplification device with the audio isolation function solves the problems that an existing audio power amplifier is complex in wiring between devices, and the use feeling of a user is reduced.
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