Beautiful Laser Security Alarm Circuit Diagram 3 Wire Plug

At the opposite door frame receiver should be fixed and should be properly aligned to the laser beam. Two npn bc548 transistors implemented in this security alarm circuit as a switching device. Take a permanent marker and make a rough layout or path draw on your pcb as shown in figure 1. Construction testing step 1. Below is a circuit design diagram which illustrates the flow of a laser alarm system. Experimental setup 1 connect a photocell to a 5k resistor. Use an breadboard to hold them in place and make sure the board is small enough to. Schematic circuit diagram of the laser light security alarm system step 2. The circuit is using only few low cost components. As soon as you connect the battery the l e d and buzzer will come on if you re in a dark room.

An ldr is used for detecting light or laser light with respect to ground through a 10k resistor. In this laser security alarm circuit we have used lm358 dual comparator ic for comparing voltages coming from ldr. The circuit can be used as a laser door alarm laser motion detector laser proximity sensor trip wire alarm and for other simple home security purposes. The attached schematic should demonstrate how the parts come together. Here ldr placed to sense the laser light from the laser diode. Simple laser security alarm circuit diagram this is a project of smiple laser security alarm circuit. The laser beam illuminates the face of photo transistor and starts conducting the voltage. Working of laser security system lock along with circuit diagram non inverting input receives a variable voltage based on the conduction of t1. As soon as you connect the battery the l e d and buzzer will come on if you re in a dark room. Laser light circuit fig.

Instead of pushing the car central lock instrument it will dial my number thru a gsm cell phone. Below is a circuit design diagram which illustrates the flow of a laser alarm system. Use an breadboard to hold them in place and make sure the board is small enough to. Ldr light dependent resistor connected to the base terminal of q2 transistor through r4 resistor. At the opposite door frame receiver should be fixed and should be properly aligned to the laser beam. I am always away from my house. Layout or path draw of the pcb fig 2. A security alarm i e. As soon as you connect the battery the l e d and buzzer will come on if you re in a dark room. Burglar alarm using laser once that an intruder lurks in the perimeter it will eventually trigger dial my cellphone same as the idea of your cell phone door lock circuit.

Construction testing step 1. At the opposite door frame receiver should be fixed and should be properly aligned to the laser beam. Two npn bc548 transistors implemented in this security alarm circuit as a switching device. Layout or path draw of the pcb fig 2. Take a permanent marker and make a rough layout or path draw on your pcb as shown in figure 1. Comparator is configured as non inverting mode and one 10k potentiometer is connected at its non inverting terminal. The attached schematic should demonstrate how the parts come together. How it works referring to circuit diagram it is seen that a tl072 op amp ic1 a is configured as a voltage comparator placed in between the adjustable voltage driver p1 r4 and the light dependent voltage which consists of photodiode d1 and r3 a fixed resistor. Focus the laser diode light on the ldr and you will see the l e d and buzzer going off if you interrupt the laser light focusing on the ldr the circuit will trigger and the alarm will ring. Working of laser security system lock along with circuit diagram non inverting input receives a variable voltage based on the conduction of t1.

The circuit can be used as a laser door alarm laser motion detector laser proximity sensor trip wire alarm and for other simple home security purposes. Laser light circuit fig. The attached schematic should demonstrate how the parts come together. Focus the laser diode light on the ldr and you will see the l e d and buzzer going off if you interrupt the laser light focusing on the ldr the circuit will trigger and the alarm will ring. Experimental setup 1 connect a photocell to a 5k resistor. Your laser security alarm system is now. Here ldr placed to sense the laser light from the laser diode. How it works referring to circuit diagram it is seen that a tl072 op amp ic1 a is configured as a voltage comparator placed in between the adjustable voltage driver p1 r4 and the light dependent voltage which consists of photodiode d1 and r3 a fixed resistor. Comparator is configured as non inverting mode and one 10k potentiometer is connected at its non inverting terminal. Laser security system circuit diagram and explanation.