[Ivan’s] friend built a proximity sensor to switch his LED bench lighting off every time he walked away. The idea is pretty neat, so [Ivan] decided to implement it for mains devices by making this ...

Position Sensors play an important role in our daily lives. A position sensor, as the name indicates, provides feedback on the position of the measurand by detecting the presence/absence of an object ...

The TMD2671 is a digital proximity detector that includes an integrated LED driver and IR LED.The proximity detector in this device operates from sunlight to dark rooms and is calibrated to 100-mm.The ...

The sensitivity of the proximity sensor circuit can be adjusted with P1 for the desired “distance”. One of its obvious uses is to open a door automatically. For this the sensor must be placed on the ...

Vishay Semiconductors has created an interesting reflectance proximity detector (VCNL4000) that includes an infrared (IR) LED and a photodetector. A second sensor in the same package measures ambient ...

This application uses an inductive sensor consisting of one capacitor and one inductive sensor placed in parallel. This application note shows how a proximity metal detector can be designed using the ...

This IR proximity detector circuit gives an audible indication when any object comes in front of the infrared reflecting sensor (containing IR LED and phototransistor). The sound generated by the ...