STEGOELEKTROTEC electrical components Germany STEGOELEKTROTEC model STEGOELEKTROTEC price

STEGOELEKTROTEC electrical components consist of wire wound turn by turn on an insulating tube. The wires are mutually insulated, and the insulating tube can be hollow or contain an iron core or magnetic powder core. An inductor coil is a device that operates based on the principle of electromagnetic induction. When current flows through a wire, it generates an electromagnetic field around the wire, and this electromagnetic field induces effects on the wire itself within the field range. The effect on the wire generating the electromagnetic field is called "self-inductance," meaning the changing current produced by the wire itself generates a changing magnetic field, which further affects the current in the wire; the effect on other wires within this electromagnetic field range is called "mutual inductance." The electrical characteristics of an inductor coil are opposite to those of a capacitor: "passes low frequencies, blocks high frequencies." High-frequency signals encounter significant resistance when passing through an inductor coil and struggle to pass; whereas the resistance presented to low-frequency signals is relatively small, allowing them to pass more easily. The resistance of an inductor coil to direct current is almost zero. Resistance, capacitance, and inductance all present certain resistance to the flow of electrical signals in a circuit; this resistance is referred to as "impedance." The impedance presented by an inductor coil to current signals utilizes the coil's self-inductance. Inductor coils are sometimes abbreviated as "inductance" or "coil," represented by the letter "L." When winding an inductor coil, the number of turns wound is generally referred to as the coil's "number of turns."

STEGOELEKTROTEC electrical component types

1. A rotating thermometer is made from a coiled bimetallic strip. One end of the bimetallic strip is fixed, and the other end is connected to a pointer. Due to different expansion rates, the two metal strips cause varying degrees of curling at different temperatures, causing the pointer to indicate different positions on the dial. The temperature can be determined from the reading on the dial. 2. The resistance change of a semiconductor thermometer differs from that of metals; as temperature rises, its resistance decreases, and the magnitude of change is larger. Therefore, even small temperature changes can cause significant resistance changes, resulting in thermometers with high precision, often called thermistors. 3. A thermocouple thermometer consists of two different metals connected to a sensitive voltmeter. At different temperatures, the metal junction produces different potential differences at the ends of the metals. The potential difference is very small, so a sensitive voltmeter is required for measurement. The temperature can be determined from the voltmeter reading. 4. Optical pyrometer: When an object's temperature is high enough to emit substantial visible light, its temperature can be determined by measuring the amount of thermal radiation. This type of thermometer is an optical pyrometer. It mainly consists of a telescope equipped with a red filter and a circuit containing a small lamp, galvanometer, and variable resistor. Before use, establish the relationship between the filament brightness at different temperatures and the galvanometer readings. During use, align the telescope with the object to be measured and adjust the resistor until the lamp's brightness matches that of the object. The temperature of the object can then be read from the galvanometer. 5. Liquid crystal thermometers made with different formulations have different phase transition temperatures. When they undergo phase transition, their optical properties change, causing the liquid crystal to appear to change color. If liquid crystals with different phase transition temperatures are coated on a sheet of paper, the temperature can be determined by the color change of the liquid crystal. The advantage of this thermometer is easy reading, while the disadvantage is insufficient accuracy. It is commonly used in ornamental fish tanks to indicate water temperature. 14. Digital thermometers use temperature sensors to convert (temperature) into digital signals, which are then displayed in numerical form via a display (such as LCD, digital tube, LED matrix, etc.). They can quickly and accurately measure the maximum human body temperature. Compared to traditional mercury thermometers, they offer advantages such as convenient digital reading, short measurement time, high measurement accuracy, memory function, and audible alerts. In particular, digital thermometers do not contain mercury, making them harmless to humans and the surrounding environment, and thus particularly suitable for use in hospitals and homes.

STEGOELEKTROTEC electrical component applications

Semiconductor diodes are used in almost all electronic circuits. The use of semiconductor diodes in circuits can protect the circuit and extend its service life. The development of semiconductor diodes has optimized integrated circuits and played a positive role in various fields. Diodes serve many functions in integrated circuits, maintaining their normal operation. The following briefly introduces the role of diodes in the following four types of circuits. (1) Switching circuit: In digital and integrated circuits, the unidirectional conductivity of diodes is used to achieve circuit conduction or disconnection. This technology is widely applied. Switching diodes can effectively protect circuits from damage due to short circuits and other issues, and can also realize the functions of traditional switches. Another characteristic of switching diodes is their fast switching speed, which is incomparable to traditional switches. (2) Limiter circuit: In electronic circuits, limiter circuits are commonly used to process various signals. They selectively transmit part of the signal within a preset voltage level range. Most diodes can be used for limiting, but dedicated limiter diodes are sometimes required, such as when protecting instruments. (3) Voltage regulation circuit: Zener diodes are typically used in voltage regulation circuits. They are junction-type silicon semiconductor diodes manufactured using special processes. These special diodes have high impurity concentrations and high charge density in the space charge region, making it easy to form strong electric fields. When the reverse voltage across the Zener diode reaches a certain value, the reverse current increases sharply, causing reverse breakdown. (4) Varactor circuit: Varactor diodes are commonly used in varactor circuits to achieve automatic frequency control, tuning, frequency modulation, and scanning oscillation.

STEGOELEKTROTEC electrical component features

1. High sensitivity; 2. Geometric shape has multi-faceted adaptability, allowing fiber optic sensors to be made in any shape; 3. Can manufacture devices that sense various physical information (sound, magnetism, temperature, rotation, etc.); 4. Can be used in high voltage, electrical noise, high temperature, corrosion, or other harsh environments; 15. And has inherent compatibility with fiber optic telemetry technology. The advantages of fiber optic sensors compared to traditional sensors are that they use light as the carrier of sensitive information and optical fiber as the medium for transmitting sensitive information. They possess the characteristics of optical fiber and optical measurement, offering a series of unique advantages. Good electrical insulation, strong anti-electromagnetic interference capability, non-intrusive, high sensitivity, easy realization of long-distance monitoring of measured signals, corrosion resistance, explosion-proof, flexible optical path, and easy connection to computers. Sensors are developing towards sensitivity, precision, strong adaptability, compactness, and intelligence. They can act as human eyes and ears in places inaccessible to humans (such as high-temperature areas or areas harmful to humans, such as nuclear radiation zones), and can even surpass human physiological limits to receive external information imperceptible to human senses.

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