Wireless sound box

Wireless sound box

  • CN 102,427,570 B
  • Filed: 11/29/2011
  • Issued: 12/02/2015
  • Est. Priority Date: 11/29/2011
  • Status: Active Grant
First Claim
Patent Images

1. a wireless sound box, comprise governor circuit, power amplifier components, frequency divider, sound system, it is characterized in that, described wireless sound box also comprises source of sound selection circuit, AUX audio interface, earphone amplifying circuit and WIFI audio frequency receiving circuit, described source of sound selection circuit receives the signal rear drive earphone amplifying circuit work that described AUX audio interface is connected with earphone, or power amplifier components work described in the audio signal rear drive receiving described WIFI audio frequency receiving circuit, and drive left voice box and the right voice box audio plays of described sound system respectively through frequency divider;

  • Described source of sound selection circuit and AUX audio interface circuit adopt TLV320AIC3104 chip, the J1 joint series connection access electric capacity C1 of AUX audio interface, TLV320AIC3104 chip the 10th pin is accessed after resistance R4, the parallel circuits that electric capacity C3 and resistance R7 is formed also is connected with between the J1 joint of electric capacity C1 and AUX audio interface, resistance R2 and resistance R8 is also had access between resistance R4 and TLV320AIC3104 chip the 10th pin, wherein resistance R2 one end access 3.3V voltage, the other end is connected between resistance R4 and TLV320AIC3104 chip the 10th pin, resistance R8 one end is connected between resistance R4 and TLV320AIC3104 chip the 10th pin, other end ground connection, the J2 joint series connection access electric capacity C5 of AUX audio interface, TLV320AIC3104 chip the 12nd pin is accessed after resistance R12, the parallel circuits that electric capacity C9 and resistance R13 is formed also is connected with between the J2 joint of electric capacity C5 and AUX audio interface, resistance R9 and resistance R15 is also had access between resistance R12 and TLV320AIC3104 chip the 12nd pin, wherein resistance R9 one end access 3.3V voltage, the other end is connected between resistance R12 and TLV320AIC3104 chip the 12nd pin, resistance R15 one end is connected between resistance R12 and TLV320AIC3104 chip the 12nd pin, other end ground connection, ground connection after TLV320AIC3104 chip the 11st pin access electric capacity C10, ground connection after TLV320AIC3104 chip the 13rd pin access electric capacity C11, TLV320AIC3104 chip the 27th, 28 pins are L channel output positive and negative charge, TLV320AIC3104 chip the 29th, 30 is R channel output positive and negative charge, TLV320AIC3104 chip the 8th, 9,31,1,2,3,4,5 pin access WIFI audio frequency receiving circuit, TLV320AIC3104 chip the 25th, 18,24 pin access electric capacity C13, electric capacity C14, electric capacity C12 and inductance L 2 one end, electric capacity C13, electric capacity C14 and the equal ground connection of the electric capacity C12 other end, another termination 3.3V power supply of inductance L 2, TLV320AIC3104 chip the 7th pin accesses 3.3V power supply and electric capacity C15 respectively, TLV320AIC3104 chip the 32nd pin accesses 1.8V power supply and electric capacity C18 respectively, TLV320AIC3104 chip the 17th, 26,21,33 pin ground connection,Wherein, electric capacity C3, electric capacity C9 value 100pf, resistance R7, resistance R13 value 10K Ω

    , electric capacity C1, electric capacity C5 value 1uF, resistance R4, resistance R12 value 10K Ω

    , resistance R2, resistance R9, resistance R8, resistance R15 value 100K Ω

    , electric capacity C10, electric capacity C11 value 1uF, electric capacity C13 value 0.1uF, electric capacity C14 value 1uF, electric capacity C12 value 47uF, inductance L 2 value 0.27uH, electric capacity C15, electric capacity C18 value 0.1uF;

    Described governor circuit comprises MCU control circuit and EPROM memory module;

    Described governor circuit is also connected with infrared receiving circuit;

    Described wireless sound box also comprises Infrared remote controller, described Infrared remote controller emissioning controling signal, and described infrared receiving circuit receives this control signal and drives the operating state of described governor circuit;

    Described governor circuit is also connected with function indicating circuit;

    Described governor circuit is also connected with temperature and overload protecting circuit;

    Described governor circuit is also connected with R channel load detecting circuit;

    Described governor circuit is also connected with earphone detection circuit;

    Described governor circuit is also connected with film key circuit;

    Described wireless sound box also comprises the DC/DC power circuit that 24 volts turn 5 volts.

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