Simple Light Operated Relay Circuit work like small auto light switch. It uses special sensor like LDR or photo diode which work like small eye. When light appears sensor gives signal to the circuit and then circuit turn the relay ON or OFF This help for turning outside light at night or start sprinkler type […]
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Simple Automatic Night Lamp Circuit using IC 555
This Simple Automatic Night Lamp Circuit using IC 555 works like smart switch for night light. It have one special light sensor called LDR to check how much light is outside. When night come and outside become dark the circuit turns ON the lamp by itself. Then when morning comes and light comes back it […]
Simple Backyard Lamp Circuit using IC CD4060
This Simple Backyard Lamp Circuit using IC CD4060 works like smart switch for outside light. It uses one special sensor, LDR to know if it is day or night. When night comes circuit turn ON the backyard lamp by itself. Then morning comes with light again it turns OFF the lamp. It do this with […]
Simple Day Night Activated Switch Circuit using a Triac and LDR
This article teaches how to construct a circuit that in response to the amount of light outside automatically switches objects ON and OFF. All you need is a light sensor LDR, a resistor, a capacitor and a special switch known as a triac. This circuit is commonly used to activate alarms which shut ON lighting […]
Flashlight Activated Remote Control Circuit
Building a remote control circuit that can be switched ON with a flashlight is explained in this tutorial. It uses a light sensor which is constructed using a transistor and a specially designed light detector LDR to receive light from the flashlight. The article provides detailed instructions on how to build a flashlight activated remote […]
Simple Automatic Day Night Switch Circuit
Electricity saving is important particularly in urban areas where there is a shortage. This article demonstrates how to construct a simple automatic light switch that activates and deactivates devices based on the outside light level. One can lower its electric bill by doing this. What is a Automatic Day Night Switch Circuit: An automatic day […]