The light sensor circuit automatically turns on the light when it gets dark and turns off the light at dawn. The circuit has adjustable light sensitivity. Can be applied to 12v, 24v, 5v lights that need current limiting resistors. The pulse increases in light as it gets dark and vice versa. The light sensor electronic circuit uses transistor S8050, transistor tip41, photoresistor (LDR), 1k resistor. rheostat. Tip41 is a load-bearing transistor you should install a heatsink, when using a large load you should replace tip41 with a high-capacity transistor. Need to increase light sensitivity you change the 50k resistor to 100k. This circuit is not suitable for mounting the relay because the current through tip41 increases gradually so that the relay does not switch quickly. easy to damage the role and damage the load after the role. In the video, I explain the working principle of the light sensor electronic circuit. In the next video, I make a sensor circuit using the LM339 comparator IC to switch fast relays suitable for large loads or mains.
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