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Issue B.2 07/08
Page 7 of 14
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 visibleLED@optekinc.com www.optekinc.com
Lednium Series Optimal X
OVTL09LG3x Series
Spatial Intensity Distribution
Normalized Spectral Intensity vs Angular Displacement
Angle (degrees)
-
-80
-60
-40
-20
0
20
40
60
80
100
In the diagram below if each parallel group of three LEDs is a single color the luminous flux produced is a
mixture or R + G + B. To change the emission level of any
group (color), and therefore t
he color of the mixed light,
the current passing through each group must be changed, yet the circuit current remains a constant value. The
means of doing this is to shunt current away from a group while allowing the total circuit current to remain constant.
By controlling the operating point of the three shunt tr
ansistors, the operating current of each group of LEDs
can be independently and continuously adjusted. The transistors will turn OFF (short across) each strip individually
when they are ON. The frequency for PWMs should be high to eliminate flickering (more than 20KHz preferred).
Controlling the ON time for each strip will control the average intensity of each strip in order to color-mix the RGB
Turtle.
Red PWM
Green PWM
Blue PWN
R1 - 10K
Common
3
2
1
Current
Source
R1 - 10K
R1 - 10K
MGSF1N03LT1G
MGSF1N03LT1G
MGSF1N03LT1G
1
2
3
3
1
2
3
1
2
Dimming and color mixing for OVTL09LG3M
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相关代理商/技术参数
OVTL09LG3WW 功能描述:大功率LED - 白色 Warm White 3200K 230lm 1050mA RoHS:否 制造商:Cree, Inc. 照明颜色:Cool White 颜色温度:5000 K 光通量:280 lm 显示角:125 deg 正向电流:700 mA 正向电压:2.9 V 安装风格:SMD/SMT 系列:XMLBWW 封装:Reel
OVTL09LGAA 功能描述:大功率LED - 单色 Power Array Amber 595nm RoHS:否 制造商:Cree, Inc. 照明颜色:Blue 波长:465 nm 光强度: 光通量/辐射通量:500 mW 正向电流:350 mA 正向电压:3.1 V 安装风格:SMD/SMT 功率额定值: 系列:XB-D 封装:Reel
OVTL09LGAA 制造商:TT Electronics / OPTEK Technology 功能描述:LED LAMP COLOR:AMBER
OVTL09LGAB 功能描述:大功率LED - 单色 Power Array Blue 467nm RoHS:否 制造商:Cree, Inc. 照明颜色:Blue 波长:465 nm 光强度: 光通量/辐射通量:500 mW 正向电流:350 mA 正向电压:3.1 V 安装风格:SMD/SMT 功率额定值: 系列:XB-D 封装:Reel
OVTL09LGAB 制造商:TT Electronics / OPTEK Technology 功能描述:LED LAMP COLOR:BLuE
OVTL09LGAG 功能描述:大功率LED - 单色 Power Array Green 524nm RoHS:否 制造商:Cree, Inc. 照明颜色:Blue 波长:465 nm 光强度: 光通量/辐射通量:500 mW 正向电流:350 mA 正向电压:3.1 V 安装风格:SMD/SMT 功率额定值: 系列:XB-D 封装:Reel
OVTL09LGAG 制造商:TT Electronics / OPTEK Technology 功能描述:LED LAMP COLOR:GREEN
OVTL09LGAM 功能描述:大功率LED - 多色 Power Array RGB Full Color RoHS:否 制造商:Cree, Inc. 照明颜色:RGB, Cool White 波长/色温: 光强度: 系列: 封装:Reel