GE Sensing Inspection electrical components German GE Sensing Inspection models GE Sensing Inspection prices

GE Sensing Inspection electrical components are tools that can accurately determine and measure temperature, divided into pointer thermometers and digital thermometers. Depending on the temperature-sensing substance used and the temperature measurement range, there are kerosene thermometers, alcohol thermometers, mercury thermometers, gas thermometers, resistance thermometers, thermocouple thermometers, radiation thermometers and optical pyrometers, bimetallic thermometers, etc. Digital thermometers can accurately determine and measure temperature, displaying it numerically rather than with a pointer or mercury. Hence they are called digital thermometers or digital temperature gauges.

GE Sensing Inspection electrical component features

A solid-state relay is a contactless electronic switch with isolation functionality; it has no mechanical contact parts during switching. Therefore, in addition to having the same functions as electromagnetic relays, solid-state relays offer logic circuit compatibility, vibration and mechanical shock resistance, unrestricted mounting positions, good moisture, mold and corrosion resistance, and excellent performance in explosion-proofing and ozone pollution prevention. They feature low input power, high sensitivity, low control power, good electromagnetic compatibility, low noise and high operating frequency. With no internal mechanical parts and a fully encapsulated sealed structure, solid-state relays provide vibration resistance, corrosion resistance, long service life and high reliability. AC-type solid-state relays use zero-crossing triggering technology, resulting in short switching times, making them suitable for higher-frequency applications. Optical isolation is used between the input and output circuits, resulting in very low input power consumption; the output includes protection circuitry and strong load capacity.

GE Sensing Inspection electrical component structure

The basic structure of a voltage transformer is very similar to that of a transformer; it also has two windings, one called the primary winding and the other the secondary winding. Both windings are mounted on or wound around the iron core. Insulation is provided between the two windings and between the windings and the iron core, ensuring electrical isolation between the windings and between the windings and the iron core. During operation, the primary winding N1 is connected in parallel to the line, and the secondary winding N12 is connected in parallel to instruments or relays. Therefore, when measuring voltage on high-voltage lines, although the primary voltage is high, the secondary side is low voltage, ensuring the safety of operators and instruments.

GE Sensing Inspection electrical component structure

The structure and materials of new high-voltage Schottky diodes differ from those of traditional Schottky diodes. Traditional Schottky diodes are formed by metal-to-semiconductor contact. Metals such as aluminum, gold, molybdenum, nickel and titanium can be used, while the semiconductor is typically silicon or gallium arsenide. Because electrons have higher mobility than holes, N-type semiconductor material is selected as the substrate to achieve good frequency characteristics. To reduce the junction capacitance of the Schottky diode and increase the reverse breakdown voltage without causing excessive series resistance, a high-resistivity N- thin layer is usually epitaxially grown on an N+ substrate. As is well known, there are abundant conductive electrons inside a metal conductor. When metal contacts a semiconductor (with the separation on the order of atomic dimensions), the Fermi level of the metal is lower than that of the semiconductor. At the energy levels corresponding to the conduction band in the metal and the semiconductor, the electron density in the metal is lower than that in the semiconductor conduction band. Therefore, after contact, electrons diffuse from the semiconductor to the metal, causing the metal to become negatively charged and the semiconductor positively charged. Since the metal is an ideal conductor, the negative charge is distributed only within a surface layer on the order of atomic thickness. For N-type semiconductors, the donor impurity atoms that lose electrons become positive ions and are distributed over a greater thickness. The diffusion of electrons from the semiconductor to the metal results in the formation of a space charge region, a built-in electric field and a potential barrier, with the depletion layer located only on the N-type semiconductor side (the entire barrier region falls on the semiconductor side). The direction of the built-in electric field in the barrier region is from the N-type region toward the metal; as thermionic emission increases the built-in field, the drift current opposite to the diffusion current increases, eventually reaching dynamic equilibrium and forming a contact potential barrier between the metal and the semiconductor, known as the Schottky barrier. When the external voltage is zero, the electron diffusion current equals the reverse drift current, achieving dynamic equilibrium. Under forward bias (positive voltage applied to the metal and negative voltage to the semiconductor), the built-in field is weakened, the barrier on the semiconductor side is lowered, and a forward current flows from the metal to the semiconductor. Under reverse bias, the built-in field strengthens, the barrier height increases, and a small reverse current flows from the semiconductor to the metal. Therefore, like SBD and PN junction diodes, it is a nonlinear device with unidirectional conductivity.

Weidou Intelligent Technology specializes in selling German GE Sensing Inspection connectors, GE Sensing Inspection switches, GE Sensing Inspection relays, GE Sensing Inspection controllers, GE Sensing Inspection plugs, GE Sensing Inspection sensors, GE Sensing Inspection resistors, GE Sensing Inspection capacitors, GE Sensing Inspection buses, GE Sensing Inspection modules, GE Sensing Inspection cables, GE Sensing Inspection power supplies, GE Sensing Inspection interfaces, GE Sensing Inspection gateways, GE Sensing Inspection circuit breakers, GE Sensing Inspection original imports from Germany. Customers are welcome to inquire and place orders.