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KAC-8102D/8152D
KAC-9102D/9152D
COMPONENTS DESCRIPTION
●PREAMPLIFIER UNIT (X08-4180-1x)
Ref. No. Application / Function Operation / Condition / Compatibility
IC11 (1/2) INFRA SONIC FILTER Cutting super-low area of voice signals
IC11 (2/2) INVERTER Reversing voice signal phase
IC12 (1/2) OP AMP Voltage amplification, buffer
IC12 (2/2) BASS BOOST High-boost (variable levels)
IC14,15 BASS BOOST High-boost (variable levels)
IC13 LOW PASS FILTER Cutting high range of voice signal
●AUDIO UNIT (X09-5820-1x)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 DC/DC converter IC Create drive signal for switching element
IC2 (1/2) Differential amplifier Detection of temperature, DC, and excess current and hold protection for a certain time
IC2 (2/2) Differential amplifier Containing excess voltage of ±B
IC11 Isolation amplifier Prevention of noise by the electric potential difference of GND
IC12,13 NAND Generation and forming of Dclass section reversal waveform and dead time
IC31 Comparator Digitalize signal by comparing analog signal and triangular wave
IC32 (1/2) Triangular wave generation Reference signal generation for converting analog signals to digital signals
IC32(2/2) Error amplifier Error compensation by feedback from output
IC51~53 OP amp, electronic volume Frequency, variable level BASS BOOST
IC61,62 Comparator
Detection of short-circuiting of SP output and determine excess current for triggering protection
Q1-3 PCON switch Turns on the circuit when ON-signal is impressed on PCON
Q4,5 Mute Mute drive signal generation,Turn LED off
Q8~11 Gate drive DC/DC converter FET gate drive
Q12-20 DC/DC converter DC/DC converter switching
Q25,26,28 AVR ±15V AVR
Q29,30 Tracking when ±15V AVR is OFF Adjusts -15V’AVR falling to‘+15V’AVR falling
Q36 DC/DC converter ON/OFF control Stops DC/DC converter switching when protection is triggered
Q37~38
DC/DC converter pulse ON/OFF control
ON/OFF of DC/DC converter drive waveform
Q41 4.4V AVR Vref 5V reference AVR
Q42 AVR ±15V AVR
Q43 DC/DC converter ON/OFF control Stops DC/DC converter switching when protection is triggered
Q151 Mute Turning off voice signal
Q187~190 Electric power amplification Dclass large current switching
Q401~415 Pulse amplification and rectifying Generation of signal for driving Dclass final FET
Q416 15V AVR Integration AVR for obtaining Dclass High+B
Q417,418 Control of ON/OFF of electric Makes the electric power amplification section non-operative for 1.2 seconds when the
power amplification section power is turned on and when protection is triggered
Q501 Emitter follower
Generation of temperature compensation reference voltage for control of electronic volume
Q601,602 Comparator
Detection of short-circuiting of SP output and determine excess current for triggering protection
Q603 DC/DC converter control
Convey IC62 upin output, result of excess current detection, to IC2 and stop the DC/DC converter
Q604~607
Electric current and voltage conversion
Conversion of current to voltage of the current flowing to final
Q608~611 Latch circuit Detection and holding of output excess voltage
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
