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PhlatLight ? DK-409N Series Development Kit Manual
4. Operating Instructions
There are multiple different ways the PhlatLight DK-409N Development Kit can be operated. The LEDs
can be driven in continuous, current controlled mode via on-board POT; PWM controlled via onboard POT
or external signal, or through an external analog voltage and dipswitch for machine vision applications.
Additionally, each channel has inputs for an external function generator signal to pulse the LEDs and is
capable of pulsing at frequencies of 25kHz.
To measure the current going to the LED, use a volt meter and measure the voltage across the sense
resistor on the driver board, which is located at the “R12” position. The pads marked Sense+ and
Sense- can also be used for easier access. (See Figure 3 for details) The current can then be
calculated by the following formula:
I LED =
V Sense
R Sense
Equation 1
where V Sense is the voltage measured across the sense resistor in Volts (V) and R Sense is the value of the
sense resistor in Ohms. The sense resistor value is 0.027 ?. The output value will the be current going to
the LED in amps
R15
Figure 3: Driver Locations for R12 and R15
R12
960018 Rev A ? 2008 Luminus Devices, Inc. All rights reserved.
Page 5
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相关代理商/技术参数
DK409N-1 功能描述:LED 照明开发工具 Dev Kit 4-CH RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
DK-409N-4 制造商:Luminus Devices 功能描述: 制造商:Luminus Devices 功能描述:LED DEV KIT DESIGNED FOR DEV OF CSM-360 & CBM-360 SOL - Bulk
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DK412 功能描述:LCD DPM +9V 2V 3.5 DIGIT -GREEN RoHS:是 类别:工业控制，仪表 >> 仪表 - 面板，数字 系列:DK100/300 标准包装:12 系列:* 其它名称:Q7072030
DK-414N-4 功能描述:LED 照明开发工具 Dev Kit 4-CH 14A Driver Brd RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
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