Kenwood KAC-PS811D Service Manual

Also see for KAC-PS811D: Instruction manual Instruction manual

Contents

Kenwood KAC-PS811D Service Manual Manual pdf 7 page image

KAC-PS811D/X811D7CIRCUIT DESCRIPTIONAD-ID59 (2/2)IC14(1/2)IC14AMP RECTMPU AD-PORTOUTPUTVOLTAGEDETECTIONLEVEL10u352701K10K7 5615K0.01 0.0110K1813K4703247L54+10K10KJ1Q1Q2Q5Q7to H/UH/U GNDCONSTANTCURRENT AMPGNDfromMPU34 2 1117812610591347 47REQCH/U-GND100K12K1.5K1.5K20KIC15J2 D77D76to OTHER AMPRECEIVETRANSMISSONto MPUTRANSMISSONRECEIVEBOTH DIRECTIONBUFFER42314.3K4.3K2702709571011 8610u2510K1.8K1.8KVCCSXGNDRXTXTYSYRY 67853214CLKDATA● Current detection circuitAmplify and rectify potential differences attwo points in the primary-side current circuitand send it to the AD-port of the MPU andobtain data for displaying current value.● Constant current output circuitRemove troubles caused by the potentialdifferences between the constant currentoutput and the GND, so that the GND po-tential differences between the H/U and theAMP is not overlapped in the AMP to H/Ucommunication.● I2C bufferUsing an IC for I2C communication, be-tween-AMP communication is conducted sothat there will be no trouble from GND po-tential differences.