Light fence circuit is used to detect the presence of any human or object in a particular area ... According to the circuit diagram, when LDR detects any activity the output of the Op-amp IC goes LOW, ...

The circuit involves a PIR sensor as the motion detector, a relay to control the power to the bulb, and a transistor to drive the relay. The PIR motion sensor light wiring diagram is shown ... When ...

In this project, we will see the Automatic Room Lights using Arduino and PIR Sensor, where the lights in the room will automatically turn ON and OFF by detecting the presence of a human ... of whole ...

An automatic bathroom light Circuit can be made in several ways, depending on your preference and budget. Some of the options make use of either a motion sensor, a smart switch, an occupancy sensor, ...

This automatic light dimmer circuit makes it possible to control a lighting system so that it turns on or off slowly. The circuit works this way: when switch S1 is closed, the capacitor C1 is slowly ...

A TL071 JFET input op amp is used to amplify and buffer this extremely high impedance signal. Circuit diagram: Using LED As A Light Sensor-Circuit diagram Resistor R1 ensures that the op amp "sees" a ...

Abstract: In this paper we propose a design using both a microprocessor and light sensors for automatic ... sensor circuit, the light sensor circuit, the microprocessor and the RF module. By using the ...

In this article an automatic method for bridge circuit balancing, based on a digital control signal, is presented. Ordinary AC-bridge circuits are nonlinear with respect to changes of the capacitive ...