It lights by day |
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Shematic with a prototype |
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When light falls over the light-dependent resistor transistor starts conducting and LED diode lights |
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When it gets dark or you cover light-dependent resistor, then transistor doesn't conduct and LED diode doesn't light |
It lights at night |
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Shematic with a prototype |
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Shematic |
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When light falls over light-dependent resistor, transistor doesn't conduct and diode doesn't light |
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When it gets dark or you cover light-dependent resistor, transistor starts conducting and LED diode lights |
Elements |
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Transistor, LED diode (lights) and resistor |
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LED diode and resistor |
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Light-dependent resistor - LDR |
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Variable resistor |
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Variable resistor and switch |
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Power suplay |