ELEMATIC electrical components Germany ELEMATIC model ELEMATIC price

ELEMATIC electrical component is a photodetector that converts light into current or voltage signals depending on the mode of use. The die often uses a photosensitive PN junction, which is highly sensitive to changes in light, exhibits unidirectional conductivity, and changes its electrical characteristics with varying light intensity; therefore, the current in the circuit can be changed by varying the light intensity. Photodiodes are also called photoelectric diodes. Photodiodes are similar in structure to semiconductor diodes; their die is a photosensitive PN junction with unidirectional conductivity, so a reverse voltage must be applied during operation. In the absence of light, there is a very small saturated reverse leakage current, known as dark current, at which point the photodiode is cut off. When exposed to light, the saturated reverse leakage current increases significantly, forming a photocurrent that varies with the intensity of the incident light. When light irradiates the PN junction, it generates electron-hole pairs in the PN junction, increasing the density of minority carriers. These carriers drift under reverse voltage, causing the reverse current to increase. Therefore, the current in the circuit can be changed by varying the light intensity.

ELEMATIC electrical component principle

In power generation, transformation, transmission, distribution, and consumption circuits, current magnitudes vary widely, ranging from a few amperes to tens of thousands of amperes. For ease of measurement, protection, and control, these need to be converted to a more uniform current level. Additionally, voltages on lines are generally high, making direct measurement extremely dangerous. Current transformers serve the functions of current transformation and electrical isolation. For analog ammeters, the secondary current of current transformers is mostly in the ampere range. For digital instruments, the sampled signal is generally in the milliampere range. The secondary current of miniature current transformers is in the milliampere range, primarily serving as a bridge between large transformers and sampling circuits. Miniature current transformers are also referred to as "instrument current transformers." ("Instrument current transformer" also implies precision current transformers with multiple current ratios used in laboratories, generally for extending instrument ranges.) Current transformers operate on the principle of electromagnetic induction, similar to transformers; however, transformers transform voltage while current transformers transform current. The winding of the current transformer connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The ratio of the primary winding current I1 to the secondary winding I8 current is called the actual current ratio K. The current ratio when the current transformer operates at rated current is called the rated current ratio of the current transformer, denoted by Kn.

ELEMATIC electrical component composition

1. Wiring harnesses are designed to facilitate installation and maintenance, ensuring that electrical equipment can operate under the harshest conditions. Wires of different specifications and colors used by various electrical devices in the vehicle are logically arranged and bundled together with insulating materials, resulting in a complete and reliable assembly. 2. Proper selection of wire cross-sectional area and color codes: (1) Correct selection of wire cross-sectional area: Electrical equipment in vehicles selects the wire cross-sectional area based on the load current magnitude. For electrical equipment operating for long durations, 60% of the wire's actual current-carrying capacity may be selected; for equipment operating for short durations, 60%-101% of the wire's actual current-carrying capacity may be used. (2) Selection of wire color codes: To facilitate identification and maintenance, wires in wiring harnesses use different colors. For ease of annotation in circuit diagrams, wire colors are represented by letters, with the corresponding colors noted in each circuit diagram.

ELEMATIC electrical component principle

The basic working principle of fiber optic sensors is to guide light from a source through an optical fiber into a modulator. The interaction between the parameter to be measured and the light entering the modulation zone causes changes in the optical properties of the light (such as intensity, wavelength, frequency, phase, polarization state, etc.), resulting in a modulated signal light. Measurement is then completed by utilizing the influence of the measured quantity on the light transmission characteristics. There are two types of measurement principles for fiber optic sensors: (1) Principle of intrinsic fiber optic sensors: Intrinsic fiber optic sensors utilize the sensitivity of the optical fiber to environmental changes to convert input physical quantities into modulated optical signals. Their working principle is based on the optical modulation effect of the fiber, meaning that when external environmental factors such as temperature, pressure, electric field, or magnetic field change, the light transmission characteristics of the fiber, such as phase and light intensity, change. Therefore, by measuring the changes in optical phase and light intensity through the fiber, changes in the measured physical quantity can be determined. These sensors are also known as sensitive element type or functional fiber optic sensors. The point source beam of a laser is expanded into parallel waves and split by a beam splitter into two paths: one reference path and one measurement path. External parameters (temperature, pressure, vibration, etc.) cause changes in fiber length and optical phase, generating different numbers of interference fringes. Counting the lateral movement of these fringes allows for the measurement of temperature or pressure. (3) Principle of extrinsic fiber optic sensors: Extrinsic fiber optic sensors are measurement systems composed of light detection elements (sensitive elements), optical fiber transmission loops, and measurement circuits. Here, the optical fiber serves only as a medium for light propagation, so they are also called non-functional or light-transmitting fiber optic sensors.

Weidou Intelligent Technology specializes in selling German ELEMATIC connectors, ELEMATIC switches, ELEMATIC relays, ELEMATIC controllers, ELEMATIC plugs, ELEMATIC sensors, ELEMATIC resistors, ELEMATIC capacitors, ELEMATIC buses, ELEMATIC modules, ELEMATIC cables, ELEMATIC power supplies, ELEMATIC interfaces, ELEMATIC gateways, ELEMATIC circuit breakers, ELEMATIC original imports from Germany. We welcome inquiries and orders from users.