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. Electric 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 or asynchronous (the speed of the motor's stator magnetic field does not remain synchronized with the rotor's rotational speed). An electric 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 magnetic flux lines (magnetic field direction). The working principle of an electric motor is the force exerted by the magnetic field 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 functioning normally 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 intelligent photoelectric switches; fast response speed, capable of detecting tiny objects moving at high speeds; 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 functionality.

GELIGHTING electrical component principle

An NPN type bipolar transistor can be viewed as two diodes connected together with a common anode. During normal operation of a bipolar transistor, the base-emitter junction is forward-biased, while the base-collector junction is reverse-biased. Without external voltage, the electron concentration in the N region of the emitter junction is greater than that 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 at the emitter junction, generating an internal electric field directed from the N region to the P region. This field hinders 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 movement 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; therefore, electrons in this region are referred to as "minority carriers." Electrons injected from the emitter into the base region partly recombine with the majority carrier 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 reach the collector region via drift motion, forming the collector current. To mitigate electron recombination before reaching the collector junction, 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, and the base thickness must be much smaller than the electron diffusion length. In modern bipolar transistors, the typical thickness of the base region 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 differ; 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 loudspeakers. Based on their transduction principles, 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, mid-frequency, and high-frequency loudspeakers, which are often used as combined loudspeakers in speaker cabinets. Classified by transduction mechanism and structure, there are moving-coil (electrodynamic), capacitive (electrostatic), piezoelectric (crystal or ceramic), electromagnetic (spring-loaded), ionophone, and pneumatic loudspeakers. Electrodynamic loudspeakers are widely used due to advantages such as good electro-acoustic performance, robust structure, and low cost. Classified by sound radiation material, there are cone, horn, and diaphragm types. Classified by cone shape, there are circular, oval, double-cone, and rubber surround types. Classified by operating frequency, there are bass, midrange, and treble; some are further divided into recorder-specific, TV-specific, general-purpose, and hi-fi loudspeakers. Classified by voice coil impedance, there are low-impedance and high-impedance types. Classified by effect, there are direct-radiation and ambient sound types. Loudspeakers are divided into built-in and external loudspeakers, with external loudspeakers generally referring to speaker boxes. Built-in loudspeakers mean that the MP4 player has built-in speakers, allowing users to listen to the sound emitted by the MP4 player not only through the headphone jack but also through the built-in speakers. MP9 players with built-in speakers can operate without external speakers and avoid the inconvenience of wearing headphones for extended periods.

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