xENTRELEC electrical components Germany xENTRELEC model xENTRELEC price

xENTRELEC electrical components are Zener diodes manufactured by utilizing the reverse breakdown state of the PN junction, a phenomenon where current can vary over a wide range while voltage remains essentially constant. This diode is a semiconductor device with very high resistance up to the critical reverse breakdown voltage. At this critical breakdown point, the reverse resistance drops to a very low value; in this low-resistance region, current increases while voltage remains constant. Zener diodes are graded according to their breakdown voltage. Due to this characteristic, Zener diodes are primarily used as voltage regulators or voltage reference elements. Zener diodes can be connected in series for use at higher voltages, allowing for higher stable voltages through series connection.

xENTRELEC electrical component principle

Photoelectric sensors achieve control by converting changes in light intensity into changes in electrical signals. Generally, a photoelectric sensor consists of three parts: a transmitter, a receiver, and a detection circuit. The transmitter emits a light beam toward the target; the emitted beam usually originates from a semiconductor light source, such as a light-emitting diode (LED), laser diode, or infrared emitting diode. The light beam is emitted continuously or with modulated pulse width. The receiver consists of photodiodes, phototransistors, and photocells. Optical components such as lenses and apertures are installed in front of the receiver. Behind it is the detection circuit, which filters valid signals and applies them.

xENTRELEC electrical component performance

The main performance indicators of loudspeakers include sensitivity, frequency response, rated power, rated impedance, directivity, and distortion. (1) Rated power: Loudspeaker power is categorized into nominal power and maximum power. Nominal power, also called rated power or non-distortion power, refers to the maximum input power allowed within the rated non-distortion range of the loudspeaker. The power value marked on the loudspeaker's label and technical manual is this rated power. Maximum power refers to the peak power the loudspeaker can withstand instantaneously. (2) Rated impedance: Loudspeaker impedance is generally frequency-dependent. (3) Frequency response: When audio signals of the same voltage but different frequencies are applied to a loudspeaker, the resulting sound pressure varies. Typically, sound pressure is higher in the mid-frequency range and lower in the low and high-frequency ranges. The frequency range of high and low tones where the sound pressure drops to a specific value relative to the mid-frequency is called the loudspeaker's frequency response characteristic. (4) Distortion: Distortion is the phenomenon where a loudspeaker fails to accurately reproduce the original sound. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion occurs when certain frequency signals are reproduced more strongly than others, disrupting the original balance of high and low volume levels and altering the timbre. Nonlinear distortion results from incomplete consistency between the vibration of the loudspeaker's vibrating system and signal fluctuations, adding new frequency components to the output sound waves. (5) Directivity characteristic: This characterizes the distribution of sound pressure radiated by the loudspeaker in various spatial directions. Higher frequencies result in narrower directivity, and larger cones result in stronger directivity.

xENTRELEC electrical component characteristics

Operating characteristics: The main characteristics characterizing synchronous generator performance are no-load characteristics and load operating characteristics. These characteristics are important bases for users selecting generators. No-load characteristic: When the generator is not connected to a load, the armature current is zero, referred to as no-load operation. Armature reaction: When the generator is connected to a symmetrical load, the three-phase current in the armature winding produces another rotating magnetic field, called the armature reaction magnetic field. Its speed is exactly equal to the rotor speed, and both rotate synchronously. The armature reaction magnetic field of a synchronous generator and the rotor excitation magnetic field can both be approximated as distributed according to a sinusoidal law. The spatial phase difference between them depends on the time phase difference between the no-load electromotive force E4 and the armature current I. The armature reaction magnetic field is also related to the load condition. When the generator load is inductive, the armature reaction magnetic field has a demagnetizing effect, causing the generator voltage to decrease; when the load is capacitive, the armature reaction magnetic field has a magnetizing effect, causing the generator output voltage to increase. Load operating characteristics: These mainly refer to external characteristics and regulation characteristics. The external characteristic is the relationship between the generator terminal voltage U and the load current I when the speed is at the rated value, and the excitation current and load power factor are constant. The regulation characteristic is the relationship between the excitation current If and the load current I when the speed and terminal voltage are at rated values, and the load power factor is constant.

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