As the name suggests LDRs or Light Dependent Resistors are resistors that exhibit a wide range of resistance values depending on the intensity of light incident on its surface. The […]
Security and Alarm
Security for home is the prime necessity for any individual and this requirement can no way be compromised or ignored.
The articles explained under this category specializes in circuit diagrams designed for securing homes with advanced sensors and warning alarms.
A home can be vulnerable to many types of threats, it could be from human intrusion, animal intrusion, bugs, pests, or simply from the electrical wiring network which operate many of our sophisticated equipment.
The following list of articles cover the entire range so that the constructor can implement and able to provide a total 360 degree protection for his or her home.
The units are designed to work with advanced sensors which include IR and passive infrared detectors, trip wire alarms, microprocessors controlled alarms and sensors.
For safeguarding from mains hazards we have posts explaining high and low cut off circuits, surge protectors, and other similar concepts specially programmed for handling home wiring networks
Bug Detector Circuit – RF Sniffer Circuit
A bug detector is a device that detects hidden wireless electronic devices such as wireless microphones, spy cameras, Wi-Fi devices, GPS trackers or any gadget that emits some kind of […]
PIR Sensor Datasheet, Pinout Specifications, Working
In this post we are going to explore the datasheet of PIR or Pyroelectric Infrared Radial Sensor HC-SR501. We will understand for what purpose PIR sensor is used? Its basic […]
Patient Drip Empty Warning Indicator Circuit
In this post we will learn about a simple mechanism, and a circuit which will enable a patient’s IV drip bottle system to sound an alarm whenever it gets almost […]
3 Smart Laser Alarm Protection Circuits
The post discusses the making of 3 simple yet effective smart laser alarm protection circuit using the IC 555, for securing a specified restricted zone from human interventions. The idea […]
Mains High Low Voltage Protection Circuit with Delay Monitor
The post explains an upgraded version of my previous mains 220V/120V high-low voltage cut off protection circuit which now includes a delayed restoration of power for the load with 3 […]