Artesyn electrical components Germany Artesyn model Artesyn price

Artesyn electrical components are devices that convert optical signals into electrical signals. Their operating principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon where electrons in a material absorb the energy of photons when light strikes certain substances, resulting in corresponding electrical effects. Based on the different manifestations of the photoelectric effect, it is classified into three categories: external photoelectric effect, internal photoelectric effect, and photovoltaic effect. Photoelectric devices include phototubes, photomultiplier tubes, photoresistors, photodiodes, phototransistors, and solar cells. The performance and characteristic curves of photoelectric devices are analyzed.

Artesyn electrical component types

1, Classification by mounting type: Thermocouples are widely used as the primary temperature measurement method, leading to various requirements for mounting fixtures and technical performance. Therefore, thermocouple mounting fixtures are divided into six types: without mounting fixture, threaded type, fixed flange type, movable flange type, movable flange angle form, and tapered protection tube type. 5, Classification by assembly and structural style: Based on the performance and structural style, thermocouples can be classified into detachable thermocouples, explosion-proof thermocouples, armored thermocouples, and spring-loaded fixed thermocouples for special applications.

Artesyn electrical component parameters

1. Voltage temperature coefficient: Refers to the rate of change of the nominal voltage of a varistor within a specified temperature range, i.e., the relative change in voltage across the varistor when the temperature changes while the current through the varistor remains constant. 2. Current temperature coefficient: Refers to the relative change in current flowing through the varistor when the temperature changes while the voltage across the varistor remains constant. 3. Nominal voltage: Refers to the voltage value across the varistor when DC current flows through it. 4. Voltage ratio: Refers to the ratio of the voltage generated by the current in the varistor to the voltage generated by the current in the varistor. 5. Maximum limiting voltage: Refers to the highest voltage value that the varistor can withstand across its terminals. 6. Leakage current: Also known as standby current, it refers to the current flowing through the varistor under specified temperature and maximum DC current conditions. 7. Residual voltage ratio: When the current through the varistor is at a certain value, the voltage generated across its terminals is called the residual voltage for that current value. The residual voltage ratio is the ratio of the residual voltage to the nominal voltage. 8. Surge current capacity: Also known as surge current, it refers to the maximum pulse (peak) current value allowed to pass through the varistor under specified conditions (specified time intervals and number of times, applying standard impulse current). 9. Static capacitance: Refers to the inherent capacitance of the varistor itself. 10. Insulation resistance: Refers to the resistance value between the leads (pins) of the varistor and the insulated surface of the resistive body. 11. Voltage nonlinearity coefficient: Refers to the ratio of the static resistance value to the dynamic resistance value of the varistor under a given applied voltage.

Artesyn electrical component principles

When high-frequency current flows through a conductor, an electric field and a magnetic field are generated in the surrounding space. According to 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 related to the current and voltage in the conductor. The region where R >> λ/2π is called the far zone, where the electromagnetic field can propagate away from the conductor into space. Its changes lag behind the current and voltage on the conductor for a period of time, and the propagated electromagnetic waves are no longer directly linked to 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, the radiation is very weak; when the length of the wire L increases to be comparable to the wavelength, the current on the wire will increase significantly, thus forming stronger radiation. Transmitting antennas utilize this property of the radiation field to allow 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 the transmission line. On a parallel two-wire transmission line, to ensure only energy transmission without radiation, it is necessary to ensure symmetrical structure of the two wires, with equal magnitude and opposite direction of current at corresponding points on the lines, and the distance between the two wires<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. By separating the open-circuit transmission line or the conductor at a distance of π/4 from the terminal in a straight shape, the current on the terminal conductor is no longer in opposite phase but in the same 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 the half-wave symmetric dipole antenna, with a characteristic impedance of 81Ω. 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. In this way, the antenna plays a receiving role, converting electromagnetic waves into high-frequency current, meaning the antenna acts as a receiving antenna. The quality of reception depends not only on the strength of the radio waves but also on the directivity of the antenna and the matching between the half-wave symmetric dipole and the receiving equipment.

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