LS7231 データシートの表示（PDF） - LSI Corporation

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LS7231

TOUCH CONTROL LAMP DIMMER

LSI Corporation  

FIGURE 8. A SWITCH-OPERATED LAMP DIMMER

AC ON-OFF SWITCH

115VAC

C1

OR (SEE NOTE)

220VAC

G

R3

MT1

T1

MT2

Z1

+

C5

-

D1

L

C2

R1

R2

OUT

TO

LAMP

PUSHBUTTON

SWITCH

87

65

TRIG V DD EXT S E N S

LS7231-4

V SS D O Z E CAP SYNC

123 4

C3 C4

R4

NOTE: Operation is independent of Line Plug Polarity

115V

C1 = 0.15µF, 200V

C2 = 0.22µF, 200V

C3 = 0.047µF, 25V

C4 = 470pF, 25V

C5 = 47µF, 25V

R1 = 270Ω, 1/4W

R2 = 1.5MΩ, 1/4W

R3 = 100Ω, 1/4W

R4 = 1MΩ, 1/4W

D1 = IN4148

Z1 = 15V, 1W (Zener)

T1 = Q4008L4 (Typical)

L = 100µH (RFI Filter)

APPLICATIONS:

1. Foot-Switch Dimmer for large floor lamps.

2. Hand-Switch Dimmer for end-table lamps.

7231-4-032995-8

220V

C1 = 0.15µF, 400V

C2 = 0.1µF, 400V

C3 = 0.047µF, 25V

C4 = 470pF, 25V

C5 = 47µF, 25V

R1 = 1KΩ, 1/4W

R2 = 1.5MΩ, 1/4W

R3 = 100Ω, 1/4W

R4 = 1MΩ, 1/4W

D1 = IN4148

Z1 = 15V, 1W (Zener)

T1 = Q5004L4 (Typical)

L = 200µH (RFI Filter)

The information included herein is believed to be

accurate and reliable. However, LSI Computer Systems,

Inc. assumes no responsibilities for inaccuracies, nor for

any infringements of patent rights of others which may

result from its use.

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