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  3. you are given the following components in a light

You are given the following components in a Light Sensor Circuit: Light Dependent Resistor (LDR) Bright condition (500...

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Electrical Engineering

You are given the following components in a Light SensorCircuit:

Light Dependent Resistor (LDR)

Bright condition (500 lux)

Dark Condition (50 lux)

Resistance values (reference)

1 kΩ

5 kΩ

Light Emitting Diode (LED)

Turn on Voltage Rating

Turn on Current Rating

Characteristics (White)

4.0 V

20 mA

Your goal is to design a light sensor circuit whichturns on the LED when it is in a dark room, and turn offthe LED when the room is lit. The LDR has a resistancevalue which changes according to the presence of light in the room,as shown in the first table. The LED turns on when it is given thevoltage and current rating in the second table.

Answer & Explanation Solved by verified expert
3.6 Ratings (310 Votes)
Schematic diagramThe circuit diagram shows how you can make a light detector AnLDR or Light Dependent Resistor is a resistor where theresistance decreases with the strength of the light LDRs are alsocalled    See Answer
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