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4.24 STK412-410 (IC701) : Power amp
• Pin Layout
1
• Block Diagram
R3
D2
TR1
TR2
TR6
R1 C1
C2
14
R4
TR3
TR4
R5
15
16
R6
TR5
D1
R2
4.25 TC7S08F-W (IC106) : Input nand gate
• Pin layout
IN B
1
IN A
2
Vss
3
18
13
TR19
TR9
TR18
TR8
TR20
TR10
TR7
TR17
R7
12
9 8 11 10
5
VDD
4
OUT X
18 17
D12
R13
TR12
TR11
TR16
C11
R11
C12
TR14
R14
TR13
R15
R16
TR15
R17
R12
• Block diagram
A
B
R41
TR41
Comparator
D42
D43
D41
D51
SUB
D53
D52
Comparator
TR51
R51
Vcc
GND
(No.22041)1-63
1
3
2
7
5
4
6
Y
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