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    UPC1892 application - multi-sound audio system ----- UPC1892 TYPICAL Application

     

    UPC1892 application --- multi-sound audio system, UPC1892 typical application Keywords: UPC1892 a circuit diagram, FIG fool short circuit 275, D-200 a circuit diagram Author: Tao Ruyi The entire circuit is divided into two parts: the first part is produced by NEC Corporation of Japan four surround processing chip μPCI892 (see FIG.), Which is provided with an internal amplifier, a low pass filter, the control mode, the phase shift effect processing, absorption compensation, tone, volume and balance circuit. The (25), (26) of the chip is the input of the left and right channel signals. After the internal circuit is amplified, it is divided into four signals from (9), (12) to (14), respectively, by the first The four-way power amplifier of the second part (see Figure 2) can produce a wonderful four-dimensional surround sound effect. The chip also presupposes the concert hall, the cinema and the simulated stereo three sound field effects. The sound field effect switches through the level of the chip (7), the (8) pin, as shown in the following table. In use can be selected by S1, S2. Potentiometer effect control for music RPl, RP2 controlled output level, RP3 for the front left and right channel volume control, RP4 for the rear surround sound volume control, RP5 bass control, RP6 treble control. Be Effect pattern pin serial number 7 feet 8 foot Off (no effect) low low level Concert hall effect high low level Cinema effect low high level Simulated stereo effect high level high level The second portion shown below is composed of a small-length component of the peripheral component and the fool 275. D-200 maximized output power up to 200W, rated no distortion output power up to 100W, 55 ± 5V in operating voltage range. The fool 275 module uses the power supply voltage to ± 15V ~ ± 32V, the limit operating voltage is not more than ± 34V.

     

     

     

     

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