wuerth elektronik electrical components, German wuerth elektronik models, wuerth elektronik pricing

wuerth elektronik electrical components are sensors that convert the state of a measured object into measurable optical signals. The operating principle of a fiber optic sensor is to guide the light beam from a light source via an optical fiber into a modulator. Inside the modulator, interaction with external measured parameters causes changes in the optical properties of the light, such as intensity, wavelength, frequency, phase, and polarization state, resulting in a modulated optical signal. This signal is then transmitted via optical fiber to a photodetector and demodulator to obtain the measured parameters. Throughout this process, the light beam is guided through the optical fiber, passes through the modulator, and is then emitted. In this process, the optical fiber serves first to transmit the light beam and second to act as an optical modulator.

wuerth elektronik electrical component applications

Semiconductor diodes are used in almost all electronic circuits. Their use in circuits helps protect the circuit and extend its service life. The development of semiconductor diodes has optimized integrated circuits and played a positive role in various fields. Diodes perform many functions in integrated circuits, maintaining their normal operation. The following briefly introduces the roles of diodes in four types of circuits: (1) Switching circuits: In digital and integrated circuits, the unidirectional conductivity of diodes is used to establish or interrupt circuit continuity. This technology is widely applied. Switching diodes effectively protect circuits from damage due to short circuits and other issues, while also performing the functions of traditional switches. A key characteristic of switching diodes is their high switching speed, which surpasses that of traditional switches. (2) Limiter circuits: Limiter circuits are commonly used in electronic circuits to process various signals. They selectively transmit portions of a signal within a preset voltage level range. Most diodes can be used for limiting, but dedicated limiter diodes are sometimes required, such as when protecting instruments. (3) Voltage regulation circuits: Zener diodes are typically used in voltage regulation circuits. These are junction silicon semiconductor diodes manufactured using special processes. They have high impurity concentrations and high charge density in the space charge region, facilitating the formation of strong electric fields. When the reverse voltage across a Zener diode reaches a specific value, the reverse current increases sharply, causing reverse breakdown. (6) Varactor circuits: Varactor diodes are commonly used in varactor circuits to achieve automatic frequency control, tuning, frequency modulation, and scanning oscillation.

wuerth elektronik electrical component characteristics

The main characteristics of circuit breakers include: rated voltage; rated current; tripping current setting ranges for overload and short-circuit protection; and rated short-circuit breaking current. The rated ultimate short-circuit breaking capacity refers to the ability of a low-voltage circuit breaker to operate normally after interrupting the maximum three-phase short-circuit current at its output terminals, and to interrupt this short-circuit current once more. The breaker does not guarantee its ability to close or interrupt normally thereafter. In contrast, the rated service short-circuit breaking capacity refers to the ability of the circuit breaker to interrupt normally multiple times when the maximum three-phase short-circuit current occurs at its output terminals. The rated service short-circuit breaking capacity is a lower breaking current value than the rated ultimate short-circuit breaking current. Generally, circuit breakers with three-stage protection functions—long-time delay for overload, short-time delay for short-circuit, and instantaneous trip for short-circuit—can achieve selective protection. Most main lines (including transformer outputs) use them as main protective switches. Circuit breakers without short-time delay for short-circuit (having only long-time delay for overload and instantaneous trip for short-circuit) cannot provide selective protection and are suitable only for branch circuits. "Marine Electrical Engineering" points out that for circuit breakers with three-stage protection, emphasis is placed on their service short-circuit breaking capacity value, whereas for circuit breakers used in branch lines, sufficient ultimate short-circuit breaking capacity must be ensured. A common bias is to prefer larger values over appropriately sized ones, assuming larger is safer. However, excessively large values cause unnecessary waste. Therefore, there is no need to blindly pursue high service short-circuit breaking capacity indicators for branch circuit breakers. For circuit breakers used on main lines, they must meet not only the rated ultimate short-circuit breaking capacity requirements but also the rated service short-circuit breaking capacity requirements. A circuit breaker is a basic low-voltage electrical device with overload, short-circuit, and undervoltage protection functions, capable of protecting lines and power sources. The main technical indicators are rated voltage and rated current. Circuit breakers have different functions, varieties, and specifications depending on the application, with many specific technical indicators. Free tripping of circuit breakers: If the protection action closes the tripping circuit at any moment during the closing process, the circuit breaker can reliably open. This is called free tripping. Circuit breakers with free tripping ensure rapid disconnection in case of a short-circuit fault during closing, preventing the expansion of the accident scope.

wuerth elektronik electrical component characteristics

Sensitivity refers to the ratio of the change in output quantity to the change in input quantity of a sensor under steady-state operating conditions. It is the slope of the output-input characteristic curve. If the relationship between the sensor's output and input is linear, then the sensitivity S is a constant. Otherwise, it varies with changes in the input quantity. The dimension of sensitivity is the ratio of the dimensions of the output and input quantities. When the dimensions of the sensor's output and input quantities are the same, sensitivity can be understood as the amplification factor. Increasing sensitivity yields higher measurement accuracy. However, higher sensitivity results in a narrower measurement range and often poorer stability.

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