The diagram illustrates the design and operation of an LED flashlight.
Overall, the flashlight consists of three key components: a protective outer casing, a power supply, and a switch mechanism that controls the electric circuit.
In terms of structure, the entire device is enclosed in a plastic case that serves as a protective layer. Inside, two batteries are vertically arranged, functioning as the main power source. The negative terminal of the lower battery is connected to a metal spring, which helps facilitate the flow of electric current through the device.
The LED flashlight is operated using a slide switch, which allows the user to control the flow of electricity. In the “off” position, the switch is pushed downward, breaking the circuit and preventing the current from reaching the bulb. By contrast, when the switch is in the “on” position, it is pushed upward to connect the metal contacts, thereby completing the circuit. This allows the current to pass through the device, lighting the LED bulb at the top.
