Learning All about Photocells

Photocells are light sensitive resisters which have many uses. These are fairly inexpensive electronic components that are used in a variety of electrical circuits. Photocells can be used to access the light in the room so that you can correctly set the exposure and flash.

What Are Photocells?

Photocells are a type of electronic component which can be used to detect the amount of light in the area. These devices will allow more electricity through the circuit if the room is darker. This has many useful applications. Photocells can be found in various devices including night lights.


Photocells can also be configured and wired in a touch keypad device. This is very easy to use as a finger press is enough for the device to detect. It's possible to build computer software which will be able to use these inputs on the computer.

Photo Circuit

It's also possible to use photo cells to create your own automatic lighting circuit. When used with a logic gate, it's possible to increase the voltage flowing through an electrical circuit when the room gets darker. This means that it's possible to make a light increase in brightness when the room is darker.

Finding Photocells

Photocells are very easy to find and can be brought in virtually any electrical store. It should be easy to find these electronic components, which are also easy to use.

Using Photocells

Photocells are simple electronic components which can be soldered directly onto various circuit boards. This means that you will need experience soldering and working with these tiny components.