The main objective we are trying to achieve with this vehicle body metal detector is that only an automobile can trigger the opening of the gate. The solution involving the interruption of a light beam is not suitable, so we turned to a metal detector, as metal is a primary material in any automobile. In […]
Detector
Proximity Detector using Hall Effect Sensor Circuit
This proximity detector circuit uses a Hall effect sensor to detect the approach of a magnetic object, such as a magnet fixed to the frame of a door. The application is simple, but widely used. The use of a Hall effect sensor solves many problems that arise when one wants to detect the opening of […]
Ion Detector Circuit [Static Discharge Detector]
The following post discusses a simple ion detector circuit which can be used for detecting positive and negative ions generated by high voltage circuits. This device can be also used for detecting static discharges in the atmosphere. Static discharge is normally emitted by high voltage sources such as sparks, arcing etc. It may be also […]
2 Simple RF Detector Circuits Explored
In this article I have explained a couple of very easy to build RF detector circuits, which can be used to sense or detect or sorts of Rf electrical noise that may be floating in the surrounding atmosphere. What is RF RF stands for radio frequency, which is a kind of electrical interference transmitted in […]
Ultrasonic Motion Detector Circuit
This ultrasonic motion detector circuit project picks up movement of any object including human beings from a distance of 4 to 7 meters away. As soon as the motion is detected, the output of the circuit illuminates a red LED indicating the presence of an obstacle or an intruder. However, using supplemental circuit stages connected […]
Ultrasonic Detector Circuit [Extend your Ear’s Sensitivity]
The ultrasonic detector or receiver circuit will be able to detect all those high frequency sounds that are beyond the hearing capacity of humans. The units will be able to hear all those frequencies that are perhaps only audible to some animals like dogs, cats and bats. The ultrasonic receiver circuit can be used for […]