The diagram illustrates the design and operation of an LED flashlight.
Overall, the flashlight consists of three main components: a protective outer case, a power supply, and a switch mechanism that controls the electric circuit.
In terms of flashlight structure, the entire device is covered by 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 with a metal spring, which helps facilitate the flow of current through the device.
The LED flashlight is operated by a slide switch, which allows users 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, if the position is “on”, it is pushed upward to the metal contacts, thereby completing the circuit, allowing the current to pass through the device and lighting the bulb at the top.
