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as Schwabe electrical components are devices for making detachable (active) connections between optical fibers. They precisely align the end faces of two optical fibers to maximize the coupling of light energy from the transmitting fiber into the receiving fiber, while minimizing the impact on the system caused by their insertion into the optical link. This is the basic requirement for fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and various performance characteristics of optical transmission systems.

as Schwabe electrical components performance

The main performance indicators of loudspeakers include parameters such as 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 referred to as rated power or non-distortion power, is the maximum input power allowed within the rated non-distortion range of the loudspeaker. The power value marked on the loudspeaker's label or technical manual corresponds to this rating. Maximum power refers to the peak power that the loudspeaker can withstand instantaneously. (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 level varies. Typically, 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 specific value relative to the mid-frequency sound pressure is defined as the frequency response characteristic of the loudspeaker. (4) Distortion: Distortion refers to the phenomenon where the loudspeaker fails to accurately reproduce the original sound. There are two types of distortion: frequency distortion and nonlinear distortion. Frequency distortion occurs when certain frequency signals are reproduced with greater intensity while others are weaker, disrupting the original balance of loudness across frequencies and altering the timbre. Nonlinear distortion arises from inconsistencies between the vibration of the loudspeaker's mechanical system and the signal fluctuations, introducing new frequency components into 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.

as Schwabe electrical components performance

The performance of fiber optic connectors primarily involves optical performance, as well as considerations for interchangeability, repeatability, tensile strength, temperature resistance, and mating cycles. 1. Optical performance: The key optical performance requirements for fiber optic connectors are insertion loss and return loss, which are the two most fundamental parameters. Insertion loss, also known as connection loss, refers to the reduction in effective optical power in the link caused by the introduction of the connector. Lower insertion loss is preferable, with a general requirement of no more than 0.5dB. Return loss refers to the connector's ability to suppress optical power reflection in the link, with a typical value of no less than 25dB. For connectors used in practical applications, the ferrule end faces undergo specialized polishing to achieve higher return loss, generally not less than 45dB. 2. Interchangeability and repeatability: Fiber optic connectors are universal passive components. Connectors of the same type can generally be combined arbitrarily and reused multiple times, with the additional loss introduced typically remaining below 0.2dB. (3) Tensile strength: For assembled fiber optic connectors, the tensile strength is generally required to be no less than 90N. (4) Temperature: Generally, fiber optic connectors must operate normally within a temperature range of -40oC to +70oC. (5) Mating cycles: Most fiber optic connectors in use support more than l004 mating cycles.

as Schwabe electrical components principle

The forward characteristic of the volt-ampere curve of a Zener diode is similar to that of a standard diode. In the reverse characteristic, when the reverse voltage is below the reverse breakdown voltage, the reverse resistance is very high and the reverse leakage current is extremely small. However, when the reverse voltage approaches the critical threshold, the reverse current increases abruptly, a phenomenon known as breakdown. At this critical breakdown point, the reverse resistance drops sharply to a very low value. Although the current varies over a wide range, the voltage across the diode remains essentially stable near the breakdown voltage, thereby achieving the voltage regulation function of the diode.

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