Axima electrical components Germany Axima model Axima price

Axima electrical components refer to switching devices capable of closing, carrying, and breaking current under normal circuit conditions, and closing, carrying, and breaking current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage and low-voltage types based on their application range; the boundary between high and low voltage is relatively vague, but generally, equipment above 3kV is referred to as high-voltage electrical apparatus. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. They automatically cut off the circuit when severe faults such as overload, short circuit, or undervoltage occur. Their function is equivalent to a combination of fuse-switches and over/under thermal relays. Moreover, component replacement is generally not required after interrupting fault currents. They have been widely applied. In the generation, transmission, and use of electricity, power distribution is an extremely important link. The distribution system includes transformers and various high- and low-voltage electrical equipment, with low-voltage circuit breakers being a widely used type of electrical apparatus.

Axima electrical component characteristics

The main parameters characterizing resistor properties include nominal resistance and its tolerance, rated power, load characteristics, and temperature coefficient of resistance (TCR). Load characteristics: When the ambient operating temperature is below tR, the resistor must not exceed its rated power; when exceeding tR, the load power must be derated. Each resistor type has specified load characteristics. Additionally, allowable load may be reduced under low atmospheric pressure. Under pulse load conditions, the average pulse power is significantly lower than the rated power, and separate specifications usually apply. Within the specified ambient temperature range, the average relative change in resistance per 3 °C change in temperature is expressed in ppm/°C. In addition to these parameters, other technical indicators include nonlinearity (degree of deviation from the linear relationship between current and applied voltage), voltage coefficient (relative rate of change in resistance per volt change in applied voltage), current noise (ratio of the RMS noise voltage generated by current flow within the resistor body to the test voltage, expressed as the current noise index), high-frequency characteristics (curve showing resistance decrease with increasing operating frequency due to internal distributed capacitance and inductance), and long-term stability (process of irreversible resistance change due to environmental conditions during long-term use or storage).

Axima 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 temperature changes while the current through it remains constant. 2. Current temperature coefficient: Refers to the relative change in current flowing through the varistor when temperature changes while the voltage across it 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 voltage 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 residual voltage to nominal voltage. 8. Surge current capacity: Also known as surge current rating, it refers to the maximum pulse (peak) current allowed to pass through the varistor under specified conditions (specified time intervals and number of occurrences, applying standard impulse current). 9. Static capacitance: Refers to the inherent capacitive capacity 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 resistor body. 22. 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.

Axima electrical component classification

Microphones can be classified into dynamic microphones and condenser microphones based on their transduction principle. Dynamic types can be further subdivided into moving-coil microphones and ribbon microphones. Common commercial microphone types include condenser microphones, crystal microphones, carbon microphones, and dynamic microphones. Common condenser microphones use two types of energy sources: DC bias power supply and electret film. Both these condenser microphones and crystal microphones convert acoustic energy into electrical energy, generating a changing electric field. Carbon microphones use a DC voltage source, changing their resistance through sound vibration, thereby converting acoustic signals into electrical signals. Condenser, crystal, and carbon microphones all generate a voltage signal proportional to the displacement of the sensitive diaphragm, while dynamic microphones generate a voltage signal proportional to the vibration velocity of the sensitive diaphragm. Dynamic microphones use a permanent magnet as an energy source, converting acoustic energy into electrical energy based on electromagnetic induction.

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