EXSYS Vertriebs electrical components Germany EXSYS Vertriebs model EXSYS Vertriebs price

EXSYS Vertriebs electrical components consist of wire wound turn by turn on an insulating tube. The wires are mutually insulated, and the insulating tube can be hollow or contain an iron core or magnetic powder core. An inductor coil is a device that operates based on the principle of electromagnetic induction. When current flows through a wire, it generates an electromagnetic field around the wire, and this electromagnetic field induces an effect on the wire itself within the field range. The effect on the wire generating the electromagnetic field is called "self-inductance," i.e., the changing current generated by the wire itself produces a changing magnetic field, which further affects the current in the wire; the effect on other wires within this electromagnetic field range is called "mutual inductance." The electrical characteristics of an inductor coil are opposite to those of a capacitor: "passes low frequencies, blocks high frequencies." High-frequency signals encounter significant resistance when passing through an inductor coil and are difficult to pass through; whereas the resistance presented to low-frequency signals is relatively small, meaning low-frequency signals can pass through more easily. The resistance of an inductor coil to direct current is almost zero. Resistance, capacitance, and inductance all present a certain resistance to the flow of electrical signals in a circuit, which we call "impedance." The impedance presented by an inductor coil to current signals utilizes the self-inductance of the coil. Inductor coils are sometimes abbreviated as "inductance" or "coil," represented by the letter "L." When winding an inductor coil, the number of turns wound is generally referred to as the "number of turns" of the coil.

EXSYS Vertriebs electrical components applications

Dedicated solid-state relays can feature short-circuit protection, overload protection, and overheat protection. When combined with hardwired combinational logic packaging, they can form intelligent modules tailored to user requirements for direct use in control systems. Solid-state relays are widely used in computer peripheral interface equipment, constant temperature systems, temperature regulation, electric furnace heating control, motor control, CNC machinery, remote control systems, and industrial automation devices; signal lights, dimming, flashers, and stage lighting control systems; instruments and meters, medical devices, copiers, and automatic washing machines; automatic fire fighting and security systems, as well as switching switches for power capacitors used in grid power factor compensation. Additionally, they are extensively used in explosive-proof, moisture-proof, and corrosion-resistant environments such as chemical plants and coal mines.

EXSYS Vertriebs electrical components principle

When high-frequency current flows through a conductor, it generates an electric field and a magnetic field in the surrounding space. Based on the distribution characteristics of the electromagnetic field in space, it can be divided into the near zone, intermediate zone, and far zone. Let R be the distance from a point in space to the conductor. The region where R ﹤﹤ λ/2π is called the near zone, where the electromagnetic field is closely linked to the current and voltage in the conductor. The region where R﹥﹥λ/2π is called the far zone, where the electromagnetic field can leave the conductor and propagate into space. Its changes lag behind the current and voltage on the conductor by a certain period, and the propagated electromagnetic waves no longer have a direct connection with the current and voltage on the wire. The electromagnetic field in this region is called the radiation field. It must be pointed out that when the length of the wire L is much smaller than the wavelength λ, radiation is very weak; when the length of the wire L increases to be comparable to the wavelength, the current on the wire increases significantly, thus forming stronger radiation. Transmitting antennas utilize this property of the radiation field, allowing transmitted signals to radiate fully into space after passing through the transmitting antenna. How to make a conductor an effective radiating system? Here we first analyze the situation on transmission lines. On parallel two-wire transmission lines, to ensure only energy transmission without radiation, it is necessary to guarantee symmetrical structure of the two lines, with currents at corresponding points on the lines being equal in magnitude and opposite in direction, and the distance between the two lines<π. To effectively radiate the electromagnetic field, this symmetry of the transmission line must be broken. Methods such as separating the two conductors at a certain angle or removing one side can break the conductor symmetry and produce radiation. Separating the open-circuit transmission or the conductor at a distance of π/4 from the terminal into a straight shape, the current on the terminal conductor is no longer anti-phase but in-phase, causing the radiation fields of this conductor segment at spatial points to superimpose in-phase, constituting an effective radiation system. This is the simplest and most basic unit antenna, called a half-wave symmetric dipole antenna, with a characteristic impedance of 79Ω. After electromagnetic waves are radiated from the transmitting antenna, they propagate in all directions. If a symmetric dipole is placed in the direction of electromagnetic wave propagation, an induced electromotive force will be generated on the antenna dipole under the action of the electromagnetic wave. If the antenna is connected to receiving equipment at this time, high-frequency current will be generated at the input end of the receiving equipment. Thus, the antenna acts as a receiver, converting electromagnetic waves into high-frequency current, meaning the antenna functions as a receiving antenna. The quality of reception depends not only on the strength of the radio waves but also on the directionality of the antenna and the matching between the half-wave symmetric dipole and the receiving equipment.

EXSYS Vertriebs electrical components usage

1, apply moderate force when tightening connections to prevent stripping the threads of bolts and nuts due to excessive force. Replace any stripped bolts and nuts immediately; do not continue operation with damaged fasteners. 2, when using a screwdriver to tighten or loosen screws, apply firm pressure to keep the screwdriver tip engaged with the screw head before tightening or loosening to prevent slipping, which can damage the screw and make disassembly difficult, especially for common circuit breakers in distribution boxes. 3, if bolts or nuts are difficult to remove, do not act rashly to prevent deformation that makes removal even harder. Tap appropriately or apply screw loosening agents or dilute hydrochloric acid, then attempt removal after a short wait. 4, do not use pliers to tighten or loosen bolts and nuts to prevent damage. When using an adjustable wrench, adjust the jaw opening properly to prevent damaging or deforming the bolts and nuts, which makes disassembly difficult. 5, a single terminal block allows connection of at most two wires of the same type and specification. 6, for terminal blocks prone to loosening or poor contact, wire ends must be secured in a "?" shape on the terminal block to increase contact area and prevent loosening. 7, when connecting wire joints or lugs, it is strictly prohibited to install non-copper or poorly conductive washers in between. 8, when connecting wire joints, the contact surface must be smooth and free of oxidation. When connecting lugs or copper bars, apply conductive paste to the cleaned contact surface before tightening. 9, when connecting temporary lines, single-strand flexible wires should be folded once at the joint before connecting to the lower terminal of the circuit breaker; single-core solid wires should be connected to the lower terminal of the circuit breaker in a "?" shape. 10, for high-voltage motor wiring, it is not allowed to bridge poorly conductive washers, such as galvanized nuts, flat washers, or spring washers, between the motor output leads and the cables connecting to the motor. 12, when using insulating tape to wrap cables or other equipment requiring insulation protection, the insulating layer should be wrapped from one end to the other with a higher overlap ratio, and at least back and forth once.

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