increase to the active subwoofer amplifier (TDA7294) circuit

Published:2011/5/4 9:45:00 Author:TaoXi | Keyword: increase, active subwoofer amplifier | From:SeekIC

This circuit updates the audio circuit which uses the IC TDA7294. Pin-10 of the TDA7294 has the mute function, when the external power supplies the high-level voltage, the manifold is in working condition; when the external power supplies the low-level voltage, the manifold turns off, at this time the circuit power consumption is very small, pin-14 of IC1 has no output ( Standby mode). General circuits supply the high-level voltage to the pin-10 to keep it in the conduction mode, by developing this pin's functions, you can make it to meet some special requirements for work. That's why this circuit can makes the active subwoofer amplifier to have the function of standby, the circuit is reliable and responsive.



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