LDR Circuits

LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit – photoresistor

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LDR Circuit

LDR Sensor LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit automatic lights flicker due to the change in light intensity at dawn and dusk.  So compact fluorescent lamps (CFLs)  are unsuitable in such circuits as flickering may damage the electronic circuits within these lamps. The circuit described here can solve the problem and switch … Read more

Fire Alarm circuit using LDR | TDA2003 datasheet

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Fire alarm circuit using LDR

Fire Alarm Circuit Fire Alarm circuit using LDR: This is a simple fire alarm circuit based on a Light Dependent Resistor (LDR) and lamp pair for sensing the fire. The alarm works by sensing the smoke produced during the fire. The circuit produces an audible alarm when the fire breaks out with smoke.   Fire … Read more