LS7232NT(2001) 데이터 시트보기 (PDF) - LSI Corporation
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LS7232NT Datasheet PDF : 7 Pages
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FIGURE 8. A TYPICAL DIMMER CIRCUIT WITH NO-TOUCH OPTICAL SENSING AND TOUCH PLATE OPTIONS
P
D3
R5
G
MT1
T
MT2
Z
R
R7
C5
C
115VAC
C1
OR
220VAC
D1
C4
R6
14 13
12 11 10
98
LS7232NT
N1
SEE
NOTE 3
P1
R14
R9
R8 TOUCH
PLATE
P
C2
R2
1
2 3 D2 4
56 7
R13 P2
R12
D4 R11
R10 TOUCH
PLATE
L
R1
C6
C7
R4
C3
R3
C8
N
LOAD
N O T E S 1) For a No-Touch system, the infra-red transmit diode D3 and and receive D2 should be placed in physical proximity
so that when a hand is placed in front of D2 and D3, reflected light from the hand is received by the IR receiver D3 to produce a touch impulse.
2) If a touchplate is used the following parts should be in: R8, R9, C8 and P1.
If infrared detector is used the following parts should be in: D2, D3, R4, R5, R6, C7 and N1.
3) If remote sensing is not used the following parts may be removed: R3, R10, R11, R12, R13, C6 and P2.
If remote sensing is used these parts should be in and the connection between Pin 7 and Pin 8 must be broken.
4) The load is either an incandescent lamp or the primary of a step-down transformer for a low voltage halogen lamp.
C = 0.1µF to 10µF, 10V
C1 = 0.15µF, 200V
C2 = 0.22µF, 200V
C3 = 0.02µF, 10V
C4 = 0.002µF, 10V
C5 = 200µF, 10V
C6 = 0.1µF, 10V
C7 = 0.003µF, 10V
C8 = 0.1µF, 10V
R1 = 270Ω, 1/2W
R2 = 680kΩ, 1/4W
R3 = 1.5MΩ, 1/4W
R4 = 500kΩ,1/8W Pot.
R5 = 51Ω, 1/4W
R6 = 1kΩ, 1/4W
115V
R = 200Ω to 2MΩ , 1/4W
R7 = 51Ω, 1/4W
R8, R9 = 2.7MΩ, 1/4W
R10, R11 = 2.7MΩ, 1/4W
R12 = 200kΩ, 1/4W
R13 = 2kΩ, 1/4W
R14 = 1 to 5MΩ, 1/4W
D1 = IN4148
D2 = SFH20S, IR Receiver diode
D3 = LD271, IR Transmitter diode
D4 = IN4148
Z1 = 5.6V, 1W (Zener)
(2) T1 = Q2004L4 Triac (Typical)
L = 100µF, RFI Filter
N1 = MPS8099, NPN
P1, P2 = MPS8599
220V (1)
(1) All components are the same as 115V except as listed below:
C1 = 0.15µF, 400V
C2 = 0.22µF, 400V
R1 = 1kΩ, 1W
R2 = 1.5MΩ, 1/4W
R8, R9 = 4.7MΩ, 1/4W
(2) T1 = Q4004L4 Triac (Typical)
L = 200µF, RFI Filter
(2) For loads exceeding 6A, use an Alternistor
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