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1 2 3 4
2C18
D +5V 101 D
100k 2R19
2C23 2C22
47uF 104
4
2R16 2R15
2C6 2C12 2N2
2N1 2 4K7 472 4K7
2C21 2R20 104 9 8
1 OP1OUT CC0
3
10 4558 ECHO 10 7
2X1 1uF 2C17 OP1IN CC1
6 2C11
2RP2 11 6
8
Vcc 1uF 104 OP2IN VC0
5 W-10K 2R13
N.C 10K
4 12 5
Mic OP2OUT CLK-0
3
GND 2R21
2 13 4
+12V 2R12 10K LPF2IN DGND
1 2C21
-12V 47 2R18 2C13 15k 561 C10
C 100uF 332 14 3 C
LPF2OU AGND
MIC-OUT 2R11
10K
15 2
2C24 2C20 10K 2R17 LPF1OUT Ref
2R8 15K 2C7 2R10 10K 2C9
100uF 392 561 16 1
15K 2C8 2R9 LPF1IN Vcc
2R22
2R7 1uF 10K 2C16
47 104
PT2399
2C15
+5V 104
2R14
12k
2C14
MIC1 47uF
5
2R1 2R4 2R6
7
4K7 2C3 6
B 1K 220 B
0.33uF 2N1
2C2 2C5 VOL
4558
223 333 2RP1
MIC IN W-10K
2C4
221
MIC2 2R5
2R2 150K
1K
2R3
MIC IN 10K
2C1
102
AKAI DV-P4740KDS
A A
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