Power for the flashlight comes from the battery. The electricity used by flashlights and electronic watches is supplied by batteries. Usually, flashlights are powered by small lead-acid batteries, regular alkaline batteries, rechargeable nickel-cadmium batteries, or lithium batteries. The flashlight consists of a light body, a battery, a circuit, a housing, a reflective cup, a circuit compartment, a switch, etc. The basic principle is that current flows out of the battery and then reaches the circuit. Voltage and current are adjusted through the circuit. Circuit then output to the luminous body for lighting.
Lighting bodies for flashlights
Lighting bodies for flashlights include: LED, halogen lamp, ordinary bulb and halogen bulb xenon including HID re xenon filled tungsten filamentfilled with gas and xenon, etc. Other light bodies that are not commonly used in flashlights will not be mentioned here. The unit of brightness of each LED is uniformly marked by lumens, commonly known as luminous flux.
A hand crank flashlight is a device that uses a high-power three-phase alternator to generate electricity by hand. The electrical energy generated by this principle can be used to charge the flashlight's circuit system. a switching power supply. This type of flashlight can be used in more emergency situations. It not only has the function of being more portable, but also has the function of simple structure.
The principle of a manually charged flashlight is: when shaken by hand, the coil inside the device moves up and down to cut the magnetic lines, thus generating an induced current. Forcharge the battery.
The structure of the hand-loading barrel includes a flashlight housing, a flashlight lamp holder, a lighting bulb, a spotlight bowl and a lampshade. It is characterized in that a manual gear is installed in the flashlight housing. , and the upper part of the hand support is connected with a handle, and the lower part of the support is provided with a compression spring. The flashlight housing is equipped with double gear, multiple sets of speed gears, flywheel and. a flywheel transmission gear. They are respectively installed on the gear holder in the flashlight housing through the gear shaft. A micro DC motor is installed on the back of the flashlight housing. The shaft end of the DC motor is equipped with a generator shaft end. the gear, which meshes with the engrtransmission gear, and the manual rack meshes with the double gear.
The circuit diagram is as follows: