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.
