CIT electrical components Germany CIT model CIT price

CIT electrical components are constituent parts of electronic components and small electrical machines and instruments; they often consist of several parts and are interchangeable within similar products. They commonly refer to certain parts in the electrical, radio, and instrumentation industries. In practice, electronic components is the collective term for components and devices.

CIT electrical component classification

Oscillators are mainly divided into RC, LC oscillators, and crystal oscillators. 1. RC oscillators that use an RC network as the frequency-selective phase-shift network are collectively referred to as RC sine wave oscillators, which belong to audio oscillators. 2. LC oscillators that use an LC oscillatory circuit as the phase-shift and frequency-selective network for positive feedback are called LC oscillators. 3. Crystal oscillators are oscillators whose oscillation frequency is controlled by a quartz crystal. 10. Temperature coefficient oscillators refer to a type of oscillator where there is a specific relationship between its oscillation frequency and temperature, meaning different temperatures correspond to different oscillation frequencies. Conversely, by measuring the output frequency of the oscillator, the temperature value can be determined.

CIT electrical component classification

Based on structural differences, they are classified into full-availability trunks, partial-availability trunks, and link systems; based on service modes, they are classified into loss-system trunks and waiting-system trunks (see stochastic service systems); based on the number of traffic sources served, they are classified into infinite-traffic-source trunks and finite-traffic-source trunks. In telecommunications systems, equipment directly used for communication between users is mostly an infinite-traffic-source loss-system full-availability link system, while equipment used to control the connection process of communication devices is mostly an infinite-traffic-source waiting-system full-availability system. When the number of traffic sources is not very large relative to the trunk capacity, a finite-traffic-source full-availability system or partial-availability system is generally adopted. Based on the call behavior of traffic sources, i.e., whether new call attempts are made after a user's call fails, trunks can be divided into repeated-call systems and non-repeated-call systems. Actual communication systems all involve repeated calls; non-repeated-call systems are an approximation of repeated-call systems. ① Full-availability trunks. If any service device (trunk line or selector) in the trunk can be used by any traffic source in the group of traffic sources it serves, such a trunk is called a full-availability trunk. ② Partial-availability trunks. If any traffic source in the traffic source group can only use part of the service devices in the trunk, such a trunk is called a partial-availability trunk. Partial-availability trunks divide the traffic source group into several subgroups, performing grading and multiple linking between the outlets of the traffic groups. This structure can be described by the example shown in the figure below.

CIT electrical component applications

Inductors mainly play roles such as filtering, oscillation, delay, and wave trapping in circuits. They also function in signal selection, noise filtering, current stabilization, and suppression of electromagnetic interference. The most common role of inductors in circuits is to form an LC filter circuit together with capacitors. Capacitors have the characteristic of 'blocking DC and passing AC,' while inductors have the function of 'passing DC and blocking AC.' If DC power accompanied by many interference signals passes through an LC filter circuit, the AC interference signals will be converted into heat energy by the inductor and consumed. When the relatively pure DC current passes through the inductor, the AC interference signals within it are also converted into magnetic induction and heat energy. Higher frequencies are more easily impeded by the inductor, which suppresses higher-frequency interference signals. Inductors have the characteristic of blocking AC while allowing DC to pass smoothly; the higher the frequency, the greater the coil impedance. Therefore, the main functions of inductors are to isolate and filter AC signals, or to form resonant circuits with capacitors, resistors, etc.

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