A general knowledge of circuitry is necessary to understand the working of a burglar alarm. Burglar alarm circuits are circuits that are put into an entryway. Energy courses through the path that lies between two opposite charged points in any electrical circuit. For example, when you turn the light on, you flip a switch that finishes the circuit.
Burglar alarm circuits are constructed in a similar manner, other than the fact that instead on flipping a switch, the alarm’s circuits are completed when it detects an intrusion like a breaking of a window, or opening a door, when it is activated.
Burglar alarm circuits can be of two kinds – open and closed circuit systems. In an open-circuit system, the circuit completes when the alarm is triggered. This is not logical. Think of the alarm system connected to the door. As long as the door is closed, there is no energy. It means that the closed door breaks the circuit, and if the door opens the circuit is completed and energy flows and sounds the alarm.
A closed-door system works the opposite way. Take the example of the same door, but the difference is that the closed door allows the energy to flow. If the intruder opens the door, the circuit breaks and triggers the alarm. When it comes to a closed-circuit, no energy means alarms sound immediately.
It is crucial that the correct burglar alarm circuit is placed at the entrance. Professionals realize the best possible circuit quickly. They mostly prefer the closed-circuit burglar alarm circuits, as the open-circuit is easy to deactivate. For instance, all that is necessary to deactivate the open-circuit is cutting the connected wires and picking the lock – the circuit never completes and the system fails.
When creating an alarm for your home, it is best to take the advice of a professional, especially if there are many valuables to protect. If you are trying to create your alarm system for fun, then you will be able to find many guides easily on the internet. All you will need is a battery to power the circuit, a switch to install on the door frame, a magnet in the door and a buzzer or alarm to connect to the circuit.
There are different types of burglar alarm circuits that range from simple to complex, but are very effective deterrents to burglars. To keep your home safe, there are various methods and it is very crucial to have different lines of defenses. Having a burglar alarm system is one good way to protect your family and home from uninvited people.