Friday 7 June 2019

Low-Cost Ambient-Light-Controlled LED Night Lamp

LED Night LampThis LED Night Lamp uses a 1.5W LED module operated on a 12V DC power supply. Here, an L14F1 phototransistor works as a sensor. When there is sufficient light falling on the sensor, LED remains off; but when there is dim or no light, LED automatically starts glowing. The author’s prototype is shown in Fig. […]

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from Electronics For You http://bit.ly/2K4Qifk

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