how the street light work animationautomatic light onldr sensor

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How does the automatic street light work? •    • how the automatic street light work(o...   • Automatic night light using opto coupler and triac to drive 220V-AC load instead of relay and the inverting circuit to drive the dc lower voltages of the opto coupler. To watch click the •    • Make automatic night light using opto...  . • HOW THE AUTOMATIC NIGHT LIGHT ON WORKING.(using relay) •    • HOW THE AUTOMATIC NIGHT LIGHT ON WORKING  

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