GELIGHTING electrical components Germany GELIGHTING model GELIGHTING price

GELIGHTING electrical components are devices that convert electrical energy into mechanical energy. They utilize energized coils (i.e., stator windings) to generate a rotating magnetic field, which acts on the rotor (such as a squirrel-cage closed aluminum frame) to form electromagnetic rotational torque. Motors are classified into DC motors and AC motors based on the power supply used. Most motors in power systems are AC motors, which can be synchronous motors or asynchronous motors (where the speed of the stator magnetic field does not remain synchronized with the rotor rotation speed). A motor mainly consists of a stator and a rotor. The direction of motion of current-carrying conductors under force in a magnetic field is related to the direction of the current and the direction of magnetic field lines (magnetic field direction). The working principle of a motor is that the magnetic field exerts force on the current, causing the motor to rotate.

GELIGHTING electrical component features

Features self-diagnostic stable operating zone indication, promptly informing whether the operating status is reliable; through-beam, retro-reflective, and mirror-reflective photoelectric switches all have mutual interference prevention functions and are easy to install; settings at the control end allow pre-checking whether the photoelectric switch is working properly before operation. It can also accept interrupt or detection commands from a computer or programmable logic controller at any time. The appropriate combination of external diagnosis and self-diagnosis enables intelligence in photoelectric switches; fast response speed, capable of detecting tiny objects moving at high speed; adopts specialized integrated circuits and advanced surface mount technology, offering high reliability; small size, light weight, simple installation and debugging, and includes short-circuit protection function.

GELIGHTING electrical component principle

An NPN type bipolar transistor can be viewed as two diodes connected together with a common anode. In the normal operating state of a bipolar transistor, the base-emitter junction is forward-biased, while the base-collector junction is reverse-biased. When no external voltage is applied, the electron concentration in the N region of the emitter junction is greater than the electron concentration in the P region, and some electrons will diffuse into the P region. Similarly, some holes in the P region will also diffuse into the N region. Thus, a space charge region forms on the emitter junction, generating an internal electric field directed from the N region to the P region. This electric field hinders the further occurrence of the aforementioned diffusion process, thereby achieving dynamic equilibrium. At this point, if a forward voltage is applied to the emitter junction, the dynamic equilibrium between the aforementioned carrier diffusion motion and the internal electric field in the depletion layer will be broken, causing thermally excited electrons to inject into the base region. In an NPN type transistor, the base region is P type doped, where holes are the majority dopant material; therefore, electrons in this region are called "minority carriers." Electrons injected from the emitter into the base region partly recombine with the majority carriers (holes) there. On the other hand, due to the low doping level and thin physical dimensions of the base region, and because the collector junction is reverse-biased, most electrons will reach the collector region via drift motion, forming the collector current. To mitigate electron recombination before reaching the collector junction as much as possible, the base region of the transistor must be made sufficiently thin so that the time required for carrier diffusion is shorter than the lifetime of semiconductor minority carriers. Meanwhile, the base thickness must be much smaller than the electron diffusion length. In modern bipolar transistors, the typical value for base region thickness is a few tenths of a micrometer. It should be noted that although both the collector and emitter are N type doped, their doping levels and physical properties are not identical. Therefore, a bipolar transistor must be distinguished from a configuration of two diodes connected in series in opposite directions.

GELIGHTING electrical component types

There are many types of speakers. Based on their transduction principle, they can be classified into electrodynamic (moving-coil), electrostatic (capacitive), electromagnetic (reed), piezoelectric (crystal), etc.; the latter two are mostly used in rural wired broadcasting networks. Based on frequency range, they can be classified into low-frequency speakers, mid-frequency speakers, and high-frequency speakers, which are often used as combined speakers in speaker enclosures. Based on transduction mechanism and structure, they include moving-coil (electrodynamic), capacitive (electrostatic), piezoelectric (crystal or ceramic), electromagnetic (spring-loaded), ionophone, and pneumatic speakers. Electrodynamic speakers have advantages such as good electro-acoustic performance, sturdy structure, and low cost, and are widely used. Based on sound radiation material, they are classified into paper cone, horn, and diaphragm types. Based on paper cone shape, they are classified into circular, oval, double paper cone, and rubber surround types. Based on operating frequency, they are classified into bass, midrange, and treble; some are further divided into recorder-specific, TV-specific, general-purpose, and hi-fi speakers. Based on voice coil impedance, they are classified into low impedance and high impedance. Based on effect, they are classified into direct radiation and ambient sound types. Speakers are divided into built-in speakers and external speakers, with external speakers generally referring to speaker enclosures. Built-in speakers mean that the MP4 player has built-in loudspeakers, allowing users to listen to the sound from the MP4 player not only through the headphone jack but also through the built-in speakers. An MP9 player with built-in speakers can operate without external speakers and avoids the inconvenience of wearing headphones for extended periods.

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