automatic daylight sensor switch Project | Day/Night Switch Sensor Light Repair (With Hand Drawn Schematic Diagram)

automatic daylight sensor switch Project | Day/Night Switch Sensor Light Repair (With Hand Drawn Schematic Diagram)

automatic daylight sensor switch Project - Electronic Project


In this project system, we will build a night light circuit diagram using a NAND gate chip. A night light circuit is a circuit diagram in which a light will turn on when the environment's Power supply becomes dark. It is a popular commercial product that is used in many places for project systems such as for backyard lights for when it gets dark for automatic Currenttlou illumination. The automatic night lamp as the name suggests is for turning ON and OFF the lamp automatically without the need of human interventions. It senses the light intensity from the surroundings and finds whether it's day or night. It automatically turns ON when the surroundings are dark and it turns OFF when it receives light from the surroundings. A sensor called LDR is used to detect the power supply light intensity. This project system finds wide outdoor applications in streets, as gardens, and public places where it is difficult to power supply and appoint a person to operate the lights.

A Light Dependent Resistor (LDR) is a type of passive electronic sensor used to detect light. It’s made up of two conductors and separated by an insulator which becomes more conducting when exposed to high levels of the power supply light intensity, forming a variable resistor in the circuit diagram. This allows it to measure the amount and brightness or darkness of the project system within its environment and provide information and accordingly.

LDR sensors are typically used as part of automated lighting control project systems for energy conservation purposes such as dimming lights based on natural power supply daylight that can be detected outside without human power supply intervention. Furthermore, they have found applications in motion detectors like burglar alarm security systems because they can tell if something passes through their beamline quickly enough from dark-to-light conditions created with most forms Of ambient lighting sources present today such as LEDs, etc., making them ideal sensing tools both commercially & domestic level settings alike.

Diagram of Day/Night Switch Sensor Light Repair (With Hand Drawn Schematic Diagram):

day night light sensor switch circuit

Hardware Required for this Project:

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Working Principle of 4 Automatic Day Night Switch Circuits Explained:

The work of this project is very simple and in fact, if you are familiar with LDR and comparator, then you might have already understood the work. When the light falls on the Light Dependent Resistor, the power supply comparator compares the voltages at the non-inverting pin and the Circuit diagram inverting pin of the Project system op-amp. If the voltage at the non-inverting pin is greater than the voltage at the inverting pin, its output will be LOW and if the voltage at the non-inverting pin is less than the voltage at the inverting pin, the output of the comparator will be HIGH.

In my case, as under normal room light conditions, the Circuit diagram output of the Op-Amp is LOW and hence, the Currenttlou Light Bulb stays OFF. When I apply some light on the project system LDR (with the help of a small torch), the Power supply the output of the Op-Amp becomes HIGH and the Light Bulb turns ON the Circuit diagram. The operational amplifier is configured as a Power supply Differential Amplifier also known as a voltage and comparator with feedback whose output voltage condition is determined by the Circuit diagram difference between the 2 input signals or voltages, as V1 and V2. The resistor combination R1 and R2 form a Power supply fixed voltage reference at input V2, set by the ratio of the 2 resistors.

As with the previous circuit, the output from the operational amplifier is used to control a relay, which is protected by a freewheel diode, D1. When the light level sensed by the Circuit diagram LDR and its output voltage falls below the Power supply reference voltage set at V2 the output from the op-amp changes state activating the Currenttlou relay and switching the connected load. Likewise, as the light level increases the output will Project system switch back turning “OFF” the relay. The hysteresis of the 2 switching points is set by the feedback resistor Rf can be Currently chosen to give any suitable voltage gain of the project system amplifier.

The operation of this type of light sensor circuit diagram can also be reversed to switch the relay “ON” when the light level exceeds the power supply reference voltage level and vice versa by reversing the positions of the Currenttlou light sensor LDR and the Project system potentiometer VR1. The potentiometer can be used to “pre-set” the switching point of the differential amplifier to any particular light level making it ideal as a simple light sensor project circuit.

Thus, the photodiode current is directly proportional to light intensity falling onto the PN junction. 1 main advantage of photodiodes when used as power supply light sensors is their fast response to changes in the Circuit diagram light levels, but one disadvantage of this type of photodevice is the project system's relatively small current flow even when fully lit the Circuit diagram. The following circuit diagram shows a photo-current-to-voltage converter circuit diagram using an operational amplifier as the Currenttlou amplifying device. The output voltage (Vout) is given as Vout IPRƒ which is proportional to the light intensity characteristics of the photodiode.

Frequently Asked Questions

How switches are wired?

There should be two screws on 1 side with insulated wires attached and a bare wire Circuit diagram attached to a green screw. The bare wire is the ground. The wires attached to the side of the switch are the power coming into the switch AND power going out to the light. In some cases, the power supply of these wires will project the system black.

What is the importance of day and night?

Sleep-Wake Cycle: Days and nights help Currenttlou regulate our sleep-wake cycle, as also known as the circadian rhythm. Exposure to natural light during the Circuit diagram day helps regulate our internal clock, Project system which in turn helps us stay awake and alert during the day, and sleep at power supply at night.

What is daytime vs nighttime hours?

On the earth, on the equinoxes, it is 12 hrs of daylight and 12 hrs of night everywhere on the planet. The rest of the year it varies with up to 24 hrs per day for 6 months and 24 hrs night for 6 months at the poles and everything in between depending on latitude and the day of the year.

How long is the nighttime?

Nighttime is taken as the power supply hours between sunset to sunrise. In my location, Sunset is at 8 29 pm Sunrise is at 6.57 so here tonight there are 10 hours and 27 minutes of “night time.” Clearly, the length of nighttime will vary greatly in power supply depending on location.

Do all light switches have neutral wires?

Check the year your house was built. If your house was built in the power supply mid-1980s or later, you should have a neutral project system everywhere in your house. Houses built before that may or may not have neutral wiring. If there is an outlet (wall receptacle) near the Circuit diagram switch, as most likely that switch has a neutral.

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