Eviro electrical components German Eviro models Eviro prices

Eviro electrical components are detection devices that can sense measured information and convert the sensed information into electrical signals or other required forms of output according to specific rules, to meet requirements for information transmission, processing, storage, display, recording, and control. The existence and development of sensors give objects senses such as touch, taste, and smell, bringing objects to life; sensors are an extension of human senses. Sensors feature miniaturization, digitization, intelligence, multifunctionality, systematization, and networking. They are the primary link in achieving automatic detection and automatic control. A device or apparatus that can sense a specified measured quantity and convert it into a usable signal according to a certain rule (mathematical function law) is usually composed of a sensitive element and a conversion element.

Eviro electrical component composition

A sensor generally consists of four parts: a sensitive element, a conversion element, a conversion circuit, and an auxiliary power supply. The sensitive element directly senses the measured quantity and outputs a physical quantity signal with a definite relationship to the measured quantity. The conversion element converts the physical quantity signal output by the sensitive element into an electrical signal. The conversion circuit is responsible for amplifying and modulating the electrical signal output by the conversion element. The conversion element and the conversion circuit generally require an auxiliary power supply.

Eviro electrical component classification

There are various classification methods for thyristors: (1) Classification by turn-off, conduction, and control methods: Thyristors can be divided into conventional thyristors, bidirectional thyristors, reverse-conducting thyristors, gate turn-off thyristors, BTG thyristors, temperature-controlled thyristors, and light-controlled thyristors, among others. (2) Classification by pins and polarity: Thyristors can be divided into two-pin thyristors, three-pin thyristors, and four-pin thyristors based on their pins and polarity. (3) Classification by package type: Thyristors can be divided into three types based on their package form: metal-packaged thyristors, plastic-packaged thyristors, and ceramic-packaged thyristors. Among these, metal-packaged thyristors are further divided into bolt-type, flat-type, and round-case types, among others. Plastic-packaged thyristors are divided into two types: with heat sink and without heat sink. (4) Classification by current capacity: Thyristors can be divided into three types based on current capacity: high-power thyristors, medium-power thyristors, and low-power thyristors. Typically, high-power thyristors mostly use metal case packaging, while medium- and low-power thyristors mostly use plastic or ceramic packaging. (5) Classification by turn-off speed: Thyristors can be divided into conventional thyristors and high-frequency (fast) thyristors based on their turn-off speed. (6) Zero-crossing triggering - generally used for power regulation, i.e., triggering occurs when the phase of the sinusoidal AC voltage crosses zero; triggering must occur at the zero-crossing point to conduct the thyristor. (7) Non-zero-crossing triggering - the thyristor can be triggered to conduct regardless of the phase of the AC voltage. Commonly, this is phase-shift triggering, i.e., changing the output percentage by altering the conduction angle (phase angle) of the sinusoidal AC voltage.

Eviro 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 distinguished between 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 at any instant. (2) Rated impedance: The impedance of a loudspeaker is generally related to frequency. (3) Frequency response: When audio signals of the same voltage but different frequencies are applied to a loudspeaker, the resulting sound pressure will vary. Generally, the sound pressure is higher at mid-frequencies and lower at low and high frequencies. The frequency range of high and low tones where the sound pressure drops to a certain value relative to the mid-frequency is called the frequency response characteristic of the loudspeaker. (4) Distortion: The phenomenon where a loudspeaker fails to faithfully reproduce the original sound is called distortion. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion is caused by stronger reproduction of signals at certain frequencies and weaker reproduction at others, disrupting the original proportion of high and low loudness and changing the original timbre. Nonlinear distortion is caused by incomplete consistency between the vibration of the loudspeaker's vibration system and the signal fluctuation, 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. The higher the frequency, the narrower the directivity; the larger the cone, the stronger the directivity.

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