verschiedene electrical components German verschiedene models verschiedene prices

verschiedene electrical components are current fuses that provide overload protection. When a circuit fault or abnormality occurs, the current continuously rises. This rising current may damage certain important devices in the circuit, burn out the circuit, or even cause a fire. If a fuse is correctly installed in the circuit, it will melt and cut off the current when the current abnormally rises to a certain level and temperature, thereby protecting the safe operation of the circuit. With the fuse correctly installed in the circuit, the fuse will melt and cut off the current when the current abnormally rises to a certain level and temperature, protecting the safe operation of the circuit. The fuse invented by Edison was used to protect expensive incandescent lamps at the time. With the development of the times, fuses protect power equipment from damage due to overcurrent and overheating, avoiding serious damage to electronic equipment caused by internal faults.

verschiedene electrical component principle

The main principle of a diode is to utilize the unidirectional conductivity of the PN junction. Adding leads and encapsulation to the PN junction forms a diode. A crystal diode consists of a PN junction formed by P-type semiconductor and N-type semiconductor. A space charge layer is formed on both sides of its interface, establishing a built-in electric field. When no external voltage is applied, the diffusion current caused by the carrier concentration difference across the PN junction equals the drift current caused by the built-in electric field, resulting in an electrical equilibrium state. When a forward voltage bias is applied externally, the mutual cancellation of the external electric field and the built-in electric field increases the carrier diffusion current, causing a forward current. When a reverse voltage bias is applied externally, the external electric field and the built-in electric field are further strengthened, forming a reverse saturation current within a certain reverse voltage range that is independent of the reverse bias voltage value. When the applied reverse voltage reaches a certain level, the electric field strength in the space charge layer of the PN junction reaches a critical value, causing a carrier multiplication process. This generates a large number of electron-hole pairs and produces a significant reverse breakdown current, known as the diode breakdown phenomenon. Reverse breakdown of the PN junction is classified into Zener breakdown and avalanche breakdown.

verschiedene electrical component principle

Potentiometric displacement sensors convert mechanical displacement into resistance or voltage output that has a linear or arbitrary functional relationship with the displacement, using potentiometer elements. Standard linear potentiometers and rotary potentiometers can be used as linear displacement and angular displacement sensors, respectively. However, potentiometers designed for displacement measurement require a definite relationship between displacement change and resistance change. The movable wiper of the potentiometric displacement sensor is connected to the measured object. The displacement of the object causes a resistance change at the moving end of the potentiometer. The magnitude of the resistance change reflects the magnitude of the displacement, while the increase or decrease in resistance indicates the direction of displacement. Typically, a supply voltage is applied to the potentiometer to convert the resistance change into a voltage output. In wire-wound potentiometers, the resistance changes in steps based on the turn-to-turn resistance as the wiper moves, resulting in a stepped output characteristic. If such a displacement sensor is used as a displacement feedback element in a servo system, excessive step voltage may cause system oscillation. Therefore, the resistance per turn should be minimized during potentiometer manufacturing. Another major disadvantage of potentiometric sensors is their susceptibility to wear. Their advantages include simple structure, large output signal, ease of use, and low cost.

verschiedene electrical component principle

An AC power supply that provides stable voltage and frequency is called an AC stabilized power supply. Most domestic manufacturers focus on AC voltage stabilization. The following briefly describes the classification characteristics of available AC stabilized power supplies in the market. Parameter adjustment (resonance) type: The basic principle of voltage stabilization for this type of stabilized power supply is LC series resonance. Early magnetic saturation stabilizers belong to this category. Its advantages include simple structure, few components, high reliability, wide voltage stabilization range, and strong anti-interference and overload capacity. The disadvantages are high energy consumption, high noise, heavy weight, and high cost.

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