kenwood electrical components Germany kenwood model kenwood price

kenwood electrical components are devices for detachable (active) connection between optical fibers. They precisely align the end faces of two optical fibers to maximize the coupling of light energy output from the transmitting fiber into the receiving fiber, and minimize 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 metrics of optical transmission systems.

kenwood electrical components structure

The main purpose of fiber optic connectors is to achieve fiber splicing. Fiber optic connectors, widely used in fiber optic communication systems, come in many types with different structures. However, upon closer examination, the basic structure of various types of fiber optic connectors is consistent: most fiber optic connectors generally use high-precision components (consisting of two ferrules and one coupling sleeve, totaling three parts) to achieve aligned connection of the fibers. This method involves inserting and fixing the fiber into the ferrule, polishing the ferrule surface, and achieving alignment within the coupling sleeve. The external component of the ferrule is made of metal or non-metallic materials. The mating end of the ferrule must be ground, while the other end typically uses a strain relief member to support the fiber or fiber optic cable to release stress. The coupling sleeve is generally made of two halves synthesized from materials such as ceramic or bronze, forming a tight cylindrical component, often equipped with metal or plastic flanges to facilitate installation and fixation of the connector. To align the optical fibers as precisely as possible, the machining precision requirements for the ferrule and coupling sleeve are very high.

kenwood electrical components classification

a. By material: silicon tube, germanium tube. b. By structure: NPN, PNP. c. By function: switching transistor, power transistor, Darlington transistor, phototransistor, etc. d. By power: low-power transistor, medium-power transistor, high-power transistor. e. By operating frequency: low-frequency transistor, high-frequency transistor, ultra-high-frequency transistor. f. By structural process: alloy transistor, planar transistor. g. By mounting method: through-hole transistor, SMD transistor.

kenwood electrical components type

For different application scenarios, the purpose of applying varistors, and the voltage/current acting on the varistor, are not the same; therefore, the requirements for varistors also differ. Distinguishing these differences is crucial for correct usage. According to different purposes, varistors can be divided into two categories: ① protection varistors, ② circuit function varistors. Protection resistors: (1) Distinguish whether it is a varistor for power supply protection or for signal line/data line protection, as they must meet different technical standard requirements. (2) According to the different continuous operating voltages applied to the varistor, varistors across power lines can be divided into AC type or DC type. The aging characteristics of varistors under these two voltage stresses differ. (3) According to the different abnormal overvoltage characteristics withstand by the varistor, varistors can be divided into three types: surge suppression type, high-power type, and high-energy type. 1. Surge suppression type varistor refers to varistors used to suppress transient overvoltages such as lightning overvoltage and switching overvoltage. The occurrence of this transient overvoltage is random and non-periodic, and the peak current/voltage may be very high. The vast majority of varistors belong to this category. 2. High-power type varistor refers to varistors used to absorb continuous pulse groups that appear periodically, such as varistors connected in parallel to switching power supply converters. Here, the impulse voltage appears periodically, and the period is known. The energy value can generally be calculated. Although the voltage peak is not large, the average power is quite high due to the high frequency of occurrence. 3. High-energy type varistor refers to varistors used to absorb magnetic energy in large inductive coils such as generator excitation coils and lifting electromagnet coils. For such applications, the main technical indicator is energy absorption capacity. The protective function of varistors can be repeated multiple times in most application scenarios, but sometimes they are made into "one-time" protective devices like current fuses. For example, varistors with short-circuit contacts connected in parallel to the load of certain current transformers.

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