What parts does the photocell cabinet contain

What are the components required to build a photocell circuit?

The required components to build the circuit mainly include breadboard, jumper wires, battery-9V, transistor 2N222A, photocell, resistors-22 kilo-ohm, 47 ohms, and LED. The above photocell circuit works in two conditions like when there is light and when it is dark.

What is the main component of a photocell?

The semiconductor material is the main component of a photocell. The mechanism of a photocell depends on the type of semiconductor material that changes electrical resistance in response to light intensity. Cadmium Sulfide (CdS) is most commonly used in photocells. As a matter of fact, photocells are sometimes called CdS cells.

Where should a photocell be mounted?

For most general applications the photocell should be mounted between 6-8 feet of the window area, central to the area illuminated by the electrical lighting that will be controlled. In all cases the photocell must be mounted so that it looks at reflected light only and not at any direct light. Mount the Indoor photocell at a reflecting wall.

How does a photocell circuit work?

This circuit uses the photocell to detect darkness, triggering the transistor to switch on the LED, useful for automatic night lights. In light, the photocell’s low resistance keeps the LED off. In two conditions, such as when there is light and when it is dark, the above photocell circuit runs.