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tele haase electrical components are constituent parts of electronic components and small electrical machines and instruments. They often consist of several parts and are interchangeable within similar products. The term commonly refers to certain parts in the electrical, radio, and instrumentation industries. In practice, electronic components is the collective term for both components and devices.

tele haase electrical components applications

Wire and cable products used in power systems mainly include bare overhead wires, busbars (bus ducts), power cables (plastic-insulated cables, oil-impregnated paper-insulated power cables (largely replaced by plastic-insulated power cables), rubber-sheathed cables, overhead insulated cables), branch cables (replacing some busbars), magnet wire, and electrical equipment wiring for power equipment. Wire and cable products used in information transmission systems mainly include telephone cables, television cables, electronic wires, RF cables, fiber optic cables, data cables, magnet wire, power communication cables, and other composite cables. Apart from bare overhead wires, almost all other products in this category are applied, but primarily power cables, magnet wire, data cables, and instrumentation cables.

tele haase electrical components classification

Thermosensitive materials are generally classified into three categories: semiconductors, metals, and alloys: 1. Semiconductor thermistor materials include single-crystal semiconductors, polycrystalline semiconductors, glass semiconductors, organic semiconductors, and metal oxides. They all exhibit very large temperature coefficients of resistance and high resistivity, resulting in high sensitivity for sensors made from them. Based on the temperature coefficient of resistance, they can also be divided into negative temperature coefficient (NTC) materials and positive temperature coefficient (PTC) materials. For example, barium titanate ceramic is an ideal PTC semiconductor material. Both types of materials are widely used in temperature measurement, temperature control, temperature compensation, switching circuits, overload protection, and time delay applications, such as in the manufacture of thermistor thermometers, thermistor switches, and thermistor delay relays. Due to the exponential relationship between resistance and temperature, the temperature measurement range is narrow and uniformity is poor. 2. Metal thermistor materials are widely used as resistance temperature detectors (RTDs), current limiters, and automatic constant-temperature heating elements. Examples include platinum resistance thermometers, nickel resistance thermometers, and copper resistance thermometers. Among these, platinum temperature sensors demonstrate high precision and high stability in various media, including corrosive environments. However, their widespread application is somewhat limited by the scarcity and high cost of platinum. Copper temperature sensors are less expensive, but long-term use in corrosive media can lead to significant changes in static characteristics and resistance values. Nickel temperature sensors are widely used abroad and are considered a relatively ideal material due to their high sensitivity, satisfactory reproducibility, and stability. 3. Alloy thermistor materials, also known as thermistor alloys. These alloys have high resistivity and their resistance values are sensitive to temperature changes, making them good materials for manufacturing temperature-sensitive sensors. The performance requirements for thermistor alloys as temperature-sensitive sensors are as follows: (1) sufficiently high resistivity; (2) relatively high temperature coefficient of resistance; (3) linear expansion coefficient close to that of the experimental material; (4) low strain sensitivity coefficient; (12) good repeatability of the resistance-temperature curve during heating and cooling within the operating temperature range.

tele haase electrical components principles

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, and polarization state), creating a modulated signal light. Measurement is completed by utilizing the influence of the measured quantity on the light transmission characteristics. There are two measurement principles for fiber optic sensors: (1) Physical property-type fiber optic sensor principle: Physical property-type 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 its light transmission characteristics, such as phase and light intensity, change when external environmental factors like temperature, pressure, electric fields, and magnetic fields change. Therefore, by measuring changes in the phase and intensity of light passing 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 from 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. (7) Structural-type fiber optic sensor principle: Structural-type fiber optic sensors are measurement systems composed of optical detection elements (sensitive elements), optical fiber transmission circuits, and measurement circuits. In this case, the optical fiber serves only as a light transmission medium, so they are also called non-functional or light-transmitting fiber optic sensors.

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