rosenberger electrical components Germany rosenberger model rosenberger price

rosenberger 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 the air is evacuated from the tube, it is filled with various gases and sealed. They are suitable for environments with dust, oil, water vapor, corrosive gases, and can also be used as explosion-proof switches in places 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 the switching of high 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.

rosenberger electrical component structure

Inductors generally consist of a bobbin, winding, shielding cover, encapsulation material, magnetic core or iron core, etc. 1, Bobbin: The bobbin refers to the support for winding the coil. For some larger fixed inductors or adjustable inductors (such as oscillator coils, choke coils, etc.), enameled wire (or silk-covered wire) is mostly wound around the bobbin, and then a magnetic core, copper core, or iron core is inserted into the inner cavity of the bobbin to increase its inductance. Bobbins are usually made of plastic, bakelite, or ceramic, and can be made into different shapes according to actual needs. Small inductors (such as color-coded inductors) generally do not use bobbins, but directly wind enameled wire around the magnetic core. Air-core inductors (also known as formless coils or air-core coils, mostly used in high-frequency circuits) do not use magnetic cores, bobbins, or shielding covers; instead, they are wound on a mold first, then the mold is removed, and a certain distance is maintained between the turns of the coil. 2, Winding: The winding refers to a set of coils with specified functions, which is the basic component of an inductor. Windings are divided into single-layer and multi-layer types. Single-layer windings have two forms: close-wound (wires are wound circle by circle) and spaced-wound (a certain distance is kept between each turn of wire during winding); multi-layer windings include layered flat winding, random winding, honeycomb winding, etc. 3, Magnetic Core and Magnetic Rod: Magnetic cores and magnetic rods are generally made of materials such as nickel-zinc ferrite or manganese-zinc ferrite, and come in various shapes such as "I" shape, cylindrical, cap shape, "E" shape, pot shape, etc. 4, Iron Core: Iron core materials mainly include silicon steel sheets, permalloy, etc., and their shape is mostly "E" type. 5, Shielding Cover: To prevent the magnetic field generated by some inductors during operation from affecting the normal operation of other circuits and components, a metal shielding cover is added (such as the oscillator coil of a semiconductor radio). Inductors with shielding covers will increase coil loss, reducing the Q value. 7, Encapsulation Material: Some inductors (such as color-coded inductors, color-ring inductors, etc.) are sealed with encapsulation material after winding to enclose the coil and magnetic core. Encapsulation materials include plastic or epoxy resin, etc.

rosenberger electrical component composition

Circuit boards mainly consist of pads, vias, mounting holes, traces, components, connectors, fill, electrical boundaries, etc. (1) Pad: Metal holes used for soldering component pins. (2) Via: Includes metal vias and non-metal vias; metal vias are used to connect component pins between layers. (3) Mounting Hole: Used to fix the circuit board. (4) Trace: Copper film of the electrical network used to connect component pins. (5) Connector: Components used for connection between circuit boards. (6) Fill: Copper pouring for the ground network, which can effectively reduce impedance. (7) Electrical Boundary: Used to determine the size of the circuit board; all components on the circuit board must not exceed this boundary.

rosenberger electrical component classification

According to different structures, they are divided into full-availability trunks, partial-availability trunks, and link systems; according to different service methods, they are divided into loss-system trunks and waiting-system trunks (see random service systems); according to the number of traffic sources served, they are divided into infinite traffic source trunks and finite traffic source trunks. In telecommunication systems, equipment directly used for communication between users is mostly infinite traffic source loss-system full-availability link systems, while equipment used to control the connection process of communication equipment is mostly infinite traffic source waiting-system full-availability systems. When the number of traffic sources is not very large relative to the trunk capacity, finite traffic source full-availability systems or partial-availability systems are generally adopted. Based on the call behavior of traffic sources, i.e., whether users make new call attempts after a failed call, trunks can be divided into repeated call systems and non-repeated call systems. Actual communication systems have repeated calls; non-repeated call systems are an approximation of repeated call systems. (1) Full-availability trunk. If any service device (trunk line or key) in the trunk can be used by any traffic source in the traffic source group it serves, such a trunk is called a full-availability trunk. (2) Partial-availability trunk. If any traffic source in the traffic source group can only use part of the service devices in the trunk, such a trunk is called a partial-availability trunk. Partial-availability trunks divide the traffic source group into several subgroups, performing grading multiple connections between the outlets of the traffic group. This structure can be described by the example shown in the figure below.

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