103013908 in stock German 103013908 electrical components 103013908 inventory

103013908 Electrical components are parts of electronic components and small machines and instruments. They often consist of several parts and can be used interchangeably within similar products. The term commonly refers to certain parts in the electrical, radio, and instrumentation industries, serving as a general term for electronic devices such as capacitors, transistors, hairsprings, and mainsprings. Common examples include diodes. Electronic components include: resistors, capacitors, inductors, potentiometers, electron tubes, heat sinks, electromechanical components, connectors, discrete semiconductor devices, electroacoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro special motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectric materials, crystals, quartz, ceramic magnetic materials, substrate boards for printed circuits, specialized materials for electronic functional processes, electronic adhesive (tape) products, electronic chemical materials and parts, etc.

103013908 Electrical component principles

In power generation, transformation, transmission, distribution, and consumption lines, current levels vary significantly, ranging from a few amperes to tens of thousands of amperes. To facilitate measurement, protection, and control, it is necessary to convert these to a more uniform current level. Additionally, voltages on lines are generally high, making direct measurement very dangerous. Current transformers serve the function of current conversion and electrical isolation. For pointer-type ammeters, the secondary current of current transformers is mostly at the ampere level. For digital instruments, the sampled signal is generally at the milliampere level. The secondary current of miniature current transformers is at the milliampere level, primarily serving as a bridge between large transformers and sampling. Miniature current transformers are also referred to as "instrument current transformers." ("Instrument current transformer" implies precision current transformers with multiple current ratios used in laboratories, generally for extending instrument ranges.) Similar to transformers, current transformers operate based on the principle of electromagnetic induction; however, transformers convert voltage while current transformers convert current. The winding connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The ratio of the primary winding current I1 to the secondary winding I3 current is called the actual current ratio K. The current ratio when the current transformer operates at rated current is called the rated current ratio of the current transformer, denoted by Kn.

103013908 Electrical component characteristics

Typically, the actual static characteristic output of a sensor is a curve rather than a straight line. In practical work, to enable instruments to have uniformly scaled readings, a fitted straight line is often used to approximately represent the actual characteristic curve. Linearity (non-linear error) is a performance indicator of this degree of approximation. There are various methods for selecting the fitted straight line. For example, the theoretical straight line connecting the zero input and full-scale output points can be used as the fitted line; or the theoretical straight line that minimizes the sum of squared deviations from each point on the characteristic curve can be used, known as the least squares fitted line.

103013908 Electrical component applications

SMD inductors are electromagnetic induction components made by winding insulated wire. They belong to commonly used inductor components. Function of SMD inductors: Passing DC and blocking AC is a simple description; they isolate AC signals, filter, or form resonant circuits with capacitors and resistors. Function of tuning and frequency selection inductors: An inductor coil connected in parallel with a capacitor can form an LC tuning circuit. Any current in the circuit passing through an SMD inductor generates a magnetic field, and the magnetic flux of this field acts on the circuit. When the current passing through the SMD inductor changes, the DC voltage potential generated in the SMD inductor will oppose the change in current. When the current through the inductor coil increases, the self-induced electromotive force generated by the inductor coil is opposite to the direction of the current, opposing the increase in current, while converting part of the electrical energy into magnetic energy stored in the inductor. When the current through the inductor coil decreases, the self-induced electromotive force is in the same direction as the current, opposing the decrease in current, while releasing stored energy to compensate for the decrease in current. Therefore, after inductive filtering, not only are the ripples in load current and voltage reduced and the waveform smoothed, but the conduction angle of the rectifier diode also increases. Inductor function 1: Color-ring inductors have a current-blocking effect: The copper core in the color-ring inductor coil always opposes changes in the current within the coil. Color-ring inductors impede AC current used in circuits; the magnitude of this impedance is called inductive reactance XL, measured in ohms. Its relationship with inductance L and AC frequency f is XL=2πfL. Color-ring inductors are mainly classified into high-frequency choke coils and low-frequency choke coils. Inductor function 2: Color-ring inductors have tuning and frequency selection functions: A color-ring inductor connected in parallel with an electrolytic capacitor can form an LC tuning circuit. At resonance, the inductive reactance and capacitive reactance of the circuit are equal in magnitude but opposite in direction. That is, if the natural oscillation frequency f0 of the circuit equals the frequency f of the non-AC signal, the inductive reactance and capacitive reactance of the loop are also equal. The usage of color-ring inductors is generally not very high, and those used in circuits are generally quite stable. Inductor function 5: The main uses of color-ring inductors include signal screening, noise filtering, current stabilization, and suppression of electromagnetic wave interference. The basic function of color-ring inductors is charging and discharging, but many circuit phenomena derived from this basic charging and discharging action give color-ring inductors various different applications. Today, color-ring inductors are widely used by customers; although small, their role is significant.

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