The diagram consists of various symbols representing different elements such as the photocell, power source, light fixture, and switches. Familiarizing yourself with these symbols will make the wiring process much easier. 4. Wiring a Photocell for Dusk to Dawn Lighting
The diagram is an essential tool for understanding how the photocell works, and how it should be connected to the rest of the circuit. At its most basic level, a photocell consists of two electrodes—one with a negative charge and one with a positive charge—separated by a thin insulating layer.
At its most basic level, a photocell consists of two electrodes—one with a negative charge and one with a positive charge—separated by a thin insulating layer. When exposed to light, the electrodes react differently, causing the current to flow through the device and into the circuit. This process is called photoelectric effect.
The main features of photo-cell include these are very small, low-power, economical, very simple to use. Because of these reasons, these are used frequently in gadgets, toys, and appliances. These sensors are frequently referred to as Cadmium-Sulfide (CdS) cells. These are made up of photo resistors and LDRs.
The breadboard, jumper wires, battery (9V), transistor 2N222A, photocell, resistors-22 kilo-ohm, 47 ohms, LED, and battery are the key components needed to make the circuit. The above photocell circuit works in two conditions when there is light and when it is dark.
When exposed to light, the resistance of the semiconductor decreases, allowing current to flow through it. In the absence of light, the resistance increases, restricting the flow of current. This unique property of photocells makes them ideal for controlling lighting systems based on ambient light conditions. 3. Understanding the Wiring Diagram