3FFILIPPI electrical components Germany 3FFILIPPI model 3FFILIPPI price

3FFILIPPI electrical components are tools that can accurately determine and measure temperature, divided into pointer thermometers and digital thermometers. Depending on the temperature-sensing substance used and the temperature measurement range, there are kerosene thermometers, alcohol thermometers, mercury thermometers, gas thermometers, resistance thermometers, thermocouple thermometers, radiation thermometers and optical pyrometers, bimetallic thermometers, etc. Digital thermometers can accurately determine and measure temperature, displaying it digitally rather than with a pointer or mercury. Hence they are called digital thermometers or digital temperature gauges.

3FFILIPPI electrical component parameters

Key technical parameters of solid-state relays include: input voltage range, input current, turn-on voltage, turn-off voltage, reverse polarity voltage, rated output current, rated output voltage, output voltage, output leakage current, turn-on time, turn-off time, zero-crossing voltage, maximum surge voltage, electrical system peak, voltage rate of rise, operating temperature, ambient temperature range, dielectric withstand voltage, insulation resistance, electrical system peak, turn-off time, conduction time, output terminal leakage current, maximum on-state voltage transient overvoltage, maximum zero-crossing conduction voltage, power consumption, maximum surge current, minimum load current, maximum load current, output voltage range, minimum input impedance, reverse polarity voltage, input current, guaranteed turn-off voltage, guaranteed turn-on voltage, input voltage range.

3FFILIPPI electrical component performance

The main performance indicators of loudspeakers include: sensitivity, frequency response, rated power, rated impedance, directivity, and distortion. (1) Rated power: Loudspeaker power is categorized into nominal power and maximum power. Nominal power, also known as rated power or non-distortion power, refers to the maximum input power allowed within the rated non-distortion range of the loudspeaker; the power value marked on the loudspeaker's label and technical manual is this power. Maximum power refers to the peak power the loudspeaker can withstand at any given instant. (2) Rated impedance: The impedance of a loudspeaker is generally frequency-dependent. (3) Frequency response: When audio signals of the same voltage but different frequencies are applied to a loudspeaker, the resulting sound pressure will vary. Generally, the sound pressure is higher in the mid-frequency range and lower in the low- and high-frequency ranges. The frequency range of high and low tones where the sound pressure drops to a certain value relative to the mid-frequency is called the frequency response characteristic of the loudspeaker. (4) Distortion: Distortion is the phenomenon where a loudspeaker fails to faithfully reproduce the original sound. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion occurs when some frequency signals are reproduced more strongly than others, disrupting the original balance of loudness across frequencies and altering the timbre. Nonlinear distortion arises because the vibration of the loudspeaker's vibrating system is not fully consistent with the signal fluctuations, adding new frequency components to the output sound waves. (5) Directivity characteristic: This characterizes the distribution of sound pressure radiated by the loudspeaker in various spatial directions. Higher frequencies result in narrower directivity, and larger diaphragms result in stronger directivity.

3FFILIPPI electrical component classification

Classification by material: a, wire-wound resistors are made by winding resistance wire around an insulating core, coated with a heat-resistant glaze insulation layer or insulating paint. Wire-wound resistors have a low temperature coefficient, high resistance accuracy, good stability, heat and corrosion resistance, and are mainly used as precision high-power resistors. Their disadvantages are poor high-frequency performance and a large time constant. b, carbon composition resistors are made by pressing carbon and synthetic plastic together. c, carbon film resistors are made by depositing a layer of crystalline carbon onto a ceramic rod skeleton. Carbon film resistors are low-cost, stable, have a wide resistance range, and low temperature and voltage coefficients, making them the most widely used resistors currently. d, metal film resistors are made by depositing a layer of metal onto a ceramic tube, using vacuum evaporation to deposit alloy material onto the surface of a ceramic rod skeleton. Metal film resistors offer higher accuracy, better stability, lower noise, and a smaller temperature coefficient than carbon film resistors. They are widely used in instruments and communication equipment. e, metal oxide film resistors are made by depositing a layer of tin oxide onto a ceramic tube, forming a layer of metal oxide on an insulating rod. As they are oxides themselves, they are stable at high temperatures, resistant to thermal shock, and have strong load capacity. Classified by application, there are general-purpose, precision, high-frequency, high-voltage, high-resistance, high-power, and resistor networks.

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