First Class Circuit Diagram For Laser Light Security Alarm
Here ldr placed to sense the laser light from the laser diode.
Circuit diagram for laser light security alarm. Below is a circuit design diagram which illustrates the flow of a laser alarm system. Take a permanent marker and make a rough layout or path draw on your pcb as shown in figure 1. Laser light circuit fig.
T2 bc558 1. Layout or path draw of the pcb fig 2. Your laser security alarm system is now.
When any person or object will come in between the laser beam the laser beam will be cut or interrupted therefore the ldr will not sense beam on its surface that increases the. Comparator is configured as non inverting mode and one 10k potentiometer is connected at its non inverting terminal. T1 bc547 1.
R4 47e 1. I made this video because i get many of requests from our viewers in comments facebook messages and personal messages. Circuit diagram of laser light security alarm.
Two npn bc548 transistors implemented in this security alarm circuit as a switching device. The circuit is divided in to two sections first is a laser transmitter or laser light and second is a laser receiver with time delay and alarm or siren circuit. In this video i explained that how the laser light security alarm circuit.
Construction testing step 1. Schematic circuit diagram of the laser light security alarm system step 2. Resistors are the passive device with two terminals.