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Question:

In the field, camping lights are controlled by light, and will automatically turn on at night.

In the field, camping lights are controlled by light, and will automatically turn on at night.

Answer:

The photosensitive resistance is good, is the use of photosensitive resistance resistance control, adjustable, variable resistance strong light, weak light resistance becomes large, the optional range of resistance is generally used in outdoor is 18 - 50, 40 - 140, the specific right, according to the results of the test. If the product needs to export, it is necessary to choose the environmental protection of photosensitive resistance is a photosensitive sensor, some manufacturers also said photosensitive resistance, environmental protection, that is a lie, a photosensitive resistance photosensitive sensor in terms of price, they hope to help you.
This can be achieved by the photodiode and photosensitive resistance, a photosensitive element is not light is turned on, no light is not conductive, they are output analog signals, for example: the photosensitive diode output current value of the size and intensity of positive light receiving ratio. The stronger the light intensity, the greater the current. The light controlled function can be realized only when the triode and the integrated circuit are cut off and connected.
This should be a photosensitive element, a photosensitive diode is too simple, light and so on, it is not bright flashlight old out, flashlight light. It should be a photosensitive element induction specific spectrum, the sun is a heating body light spectrum and spectrum has the distinction of camping lights, so you can determine the kinds of light and not in the daytime.

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