VIKTORDRGA electrical components Germany VIKTORDRGA model VIKTORDRGA price

VIKTORDRGA electrical components utilize the good conductivity and fluidity of mercury to control the opening and closing of electrical circuits. They consist of a glass tube, mercury, fixed electrodes, lead wires, etc. After evacuating the air from the tube, it is filled with various gases and sealed. It is suitable for environments with dust, oil, water vapor, and corrosive gases, and can also be used as an explosion-proof switch in places with explosive gases. Given the high surface tension and specific gravity of the mercury inside the tube, along with its fluidity, the position of the mercury changes immediately upon slight tilting of the glass tube, making surface contact with the electrodes, thus enabling the switching of high AC and DC currents. Additionally, this type of switch features a lifespan of several million cycles at rated current, compact size, high sensitivity, no mechanical noise, and low cost, making it commonly used as a switch for automatic control.

VIKTORDRGA electrical component structure

Some gas discharge tubes use glass as the encapsulation shell, while others use ceramic. The discharge tube is filled with inert gases with stable electrical properties (such as argon and neon). Common discharge tubes have two or three electrodes, separated by inert gas. Based on the number of electrodes, discharge tubes are classified into two-electrode and three-electrode types. Ceramic two-electrode discharge tubes mainly consist of pure iron electrodes, nickel-chromium-cobalt alloy caps, silver-copper welding caps, and ceramic tube bodies. The discharge electrodes inside the tube are coated with radioactive oxides, and the inner wall of the tube body is also coated with radioactive elements to improve discharge characteristics. Discharge electrodes mainly come in rod and cup shapes. In discharge tubes with rod-shaped electrodes, a cylindrical heat shield is installed between the electrode and the tube wall to ensure uniform heating of the ceramic tube body, preventing local overheating and tube fracture. The heat shield is also coated with radioactive oxides to further reduce discharge dispersion. In discharge tubes with cup-shaped electrodes, a molybdenum mesh is installed at the cup opening, and cesium is placed inside the cup, also serving to reduce discharge dispersion. Three-electrode discharge tubes are also composed of pure iron electrodes, nickel-chromium-cobalt alloy caps, silver-copper welding caps, and ceramic tube bodies. Unlike two-electrode tubes, three-electrode discharge tubes include a nickel-chromium-cobalt alloy cylinder as the third electrode, i.e., the ground electrode.

VIKTORDRGA electrical component structure

The rated current of the fuse element is not equal to the rated current of the fuse. The rated current of the fuse element is selected based on the load current of the protected equipment. The rated current of the fuse should be greater than the rated current of the fuse element and determined in coordination with the main appliance. The fuse mainly consists of 5 parts: the fuse element, housing, and support. The fuse element is the key component controlling the fusing characteristics. The material, dimensions, and shape of the fuse element determine the fusing characteristics. Fuse element materials are divided into low-melting-point and high-melting-point categories. Low-melting-point materials, such as lead and lead alloys, have low melting points and fuse easily. Due to their higher resistivity, they require larger cross-sectional dimensions, producing more metal vapor during fusing, and are only suitable for fuses with low breaking capacity. High-melting-point materials, such as copper and silver, have high melting points and are not easy to fuse. However, due to their lower resistivity, they can be made with smaller cross-sectional dimensions than low-melting-point elements, producing less metal vapor during fusing, making them suitable for fuses with high breaking capacity. The shape of the fuse element is divided into wire and strip types. Changing the shape of the variable cross-section can significantly alter the fusing characteristics of the fuse. Fuses have various fusing characteristic curves, suitable for the needs of different types of protected objects.

VIKTORDRGA electrical component classification

1, classified by operating nature, can be divided into transmitting antennas and receiving antennas. 2, classified by application, can be divided into communication antennas, broadcast antennas, television antennas, radar antennas, etc. 3, classified by directionality, can be divided into omnidirectional antennas and directional antennas, etc. 4, classified by operating wavelength, can be divided into ultra-long wave antennas, long wave antennas, medium wave antennas, short wave antennas, ultra-short wave antennas, microwave antennas, etc. 5, classified by structural form and working principle, can be divided into wire antennas and aperture antennas, etc. Characteristic parameters describing antennas include radiation pattern, directivity coefficient, gain, input impedance, radiation efficiency, polarization, and bandwidth. 6, classified by dimension, can be divided into two types: (1) One-dimensional antennas consist of many wires, which are either straight lines like those used in mobile phones, or clever shapes, like the old rabbit ear antennas used on televisions before cable appeared. Monopole and dipole antennas are the two most basic one-dimensional antennas. (2) Two-dimensional antennas: diverse variations, including patch (a square piece of metal), array (an organized bundle of patches in a two-dimensional pattern), horn, and dish shapes. 15, antennas can be divided into three major categories based on usage scenarios: handheld transceiver antennas, vehicle-mounted antennas, and base station antennas. Handheld transceiver antennas: antennas for personal use with handheld walkie-talkies, commonly rubber antennas and telescopic antennas. Vehicle-mounted antennas: communication antennas originally designed for installation on vehicles, with suction cup antennas being the most common and widely applied. Vehicle-mounted antenna structures also include shortened types, quarter-wavelength, center-loaded, five-eighths wavelength, and double half-wavelength antennas. Base station antennas: play a very critical role in the entire communication system, especially for communication stations serving as hubs. Common base station antennas include fiberglass high-gain antennas, four-ring array antennas (eight-ring array antennas), and directional antennas.

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