DOEPKESCHALTGER electrical components Germany DOEPKESCHALTGER model DOEPKESCHALTGER price

DOEPKESCHALTGER 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 environments with explosive gases. Given the high surface tension and specific gravity of the mercury inside the tube, as well as its fluidity, as long as the glass tube is slightly tilted, the position of the mercury changes immediately, making surface contact with the electrodes, thus enabling it to switch large AC and DC currents. Additionally, this type of switch features a lifespan of several million cycles at rated current, small size, high sensitivity, no mechanical noise, and low price, so it has always been used as a switch for automatic control.

DOEPKESCHALTGER 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 reasonably arranged and bundled together with insulating material, making them complete and reliable. 2. Normal selection of wire cross-sectional area and color code: (1) Correct selection of wire cross-sectional area; electrical equipment on the vehicle selects the wire cross-sectional area based on the magnitude of the load current. For electrical equipment operating for long periods, 60% of the actual current-carrying capacity of the wire can be selected; for electrical equipment operating for short periods, 60%-100% of the actual current-carrying capacity of the wire can be used. (2) Selection of wire color codes; to facilitate identification and maintenance, wires in the wiring harness use different colors. For easy annotation in circuit diagrams, wire colors are represented by letters, with the corresponding colors noted in each circuit diagram.

DOEPKESCHALTGER electrical component classification

1, classified by operating nature into transmitting antennas and receiving antennas. 2, classified by application into communication antennas, broadcast antennas, TV antennas, radar antennas, etc. 3, classified by directionality into omnidirectional antennas and directional antennas, etc. 4, classified by operating wavelength 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 operating principle 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 dimensionality into two types: (1) One-dimensional antennas consist of many wires, which are either straight like those used in mobile phones, or have clever shapes, like the old rabbit ear antennas used on TVs 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 (a bundle of patches organized in a two-dimensional pattern), horn, and dish. 10, 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 whip 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 as communication hubs at stations. Commonly used base station antennas include fiberglass high-gain antennas, four-ring array antennas (eight-ring array antennas), and directional ant

DOEPKESCHALTGER electrical component classification

Common classifications of inductor coils in circuits include: Classification by inductance form: fixed inductors, variable inductors. Classification by magnetic core material: air-core coils, ferrite coils, iron-core coils, copper-core coils. Classification by operating nature: antenna coils, oscillator coils, choke coils, trap coils, deflection coils. Classification by winding structure: single-layer coils, multi-layer coils, honeycomb coils, close-wound coils, spaced-wound coils, self-supporting coils, honeycomb coils, random-wound coils.

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