Description: The dome light current flowing through LI closes the reed switch and activates the alarm. Additionally, a shaker switch can also trigger the alarm.
The circuit operates by utilizing a dome light that is connected to a current source, designated as LI. When the dome light is powered on, it allows current to flow through the circuit, which energizes a reed switch. The reed switch, a type of electromagnetic switch, closes in response to the magnetic field created by the current, thereby completing the circuit and activating an alarm system.
In this configuration, the alarm serves as an alert mechanism, indicating a specific condition, such as unauthorized entry or an emergency situation. The activation of the alarm can be further enhanced by incorporating a shaker switch. This switch is designed to detect motion or vibration and, when triggered, sends a signal to the alarm system to activate it.
The integration of both the dome light and the shaker switch into the circuit provides a dual-layered approach to security. The dome light not only serves as a visual indicator but also plays a crucial role in the activation of the alarm. Meanwhile, the shaker switch adds an additional level of sensitivity, ensuring that any movement within the vicinity of the circuit will prompt an immediate response from the alarm system.
Overall, this circuit design effectively combines visual and motion detection elements to enhance security measures, making it suitable for various applications in residential or commercial settings.Dome light current-through LI closes reed switch and sounds alarm Shaker switch also activates alarm.
This circuit is capable of generating up to 1 W of audio power to drive a speaker or horn. When the CDS cell is exposed to light, its resistance decreases, activating NOR gate (a). This activation causes gates (a) and...
This circuit incorporates automatic exit and entry delays along with a timed bell cut-off feature. It accommodates both normally-closed and normally-open contacts and includes a 24-hour personal attack/tamper zone. The circuit is permanently connected to a 12-volt supply and is...
The circuit utilizes reed switches to create a gate alarm that is powered by a universal AC/DC power supply oscillator.
The design of this gate alarm circuit incorporates reed switches, which are electromechanical devices that operate based on the presence of...
This low-cost burglar alarm utilizes a 12V strobe light and a truck reversing horn as the visible and audible outputs, respectively, while the alarm system operates on a 12V power supply.
The burglar alarm circuit is designed to provide an economical...
A device such as burglar alarms and sirens, whose basic purpose is to monitor a tested circuit diagram with a description of a burglar alarm using a dual operational amplifier.
The burglar alarm system utilizes a dual operational amplifier (op-amp) to...
This is a single-zone alarm system featuring independently adjustable Exit, Entry, and Siren Cut-Off timers. It is designed to accommodate standard normally-closed input devices, such as magnetic reed contacts, foil tape, and passive infrared sensors (PIRs). The system can be...
This circuit features open and closed loop contacts (switches 1, 2, 3) that activate the alarm, which remains activated for 5 to 10 minutes. The triggering delay for entrance and exit is set to 27 seconds. Additionally, this simple alarm...
This is a single-zone alarm system featuring independently adjustable Exit, Entry, and Siren Cut-Off timers. It is compatible with standard normally-closed input devices such as magnetic-reed contacts, foil tape, and passive infrared sensors (PIRs). A mains power supply can be...
A simple burglar alarm circuit utilizes a pyroelectric sensor (IRA-E100SZI). When human movement is detected, it triggers an electric buzzer alarm. The sensor receives signals through an AC amplifier, which is then converted by a rectifier circuit into a DC...
We use cookies to enhance your experience, analyze traffic, and (if you allow) serve personalized ads.
By clicking Accept All, you agree to our use of cookies.
Learn more