SLZER electrical components, German SLZER models, SLZER pricing

SLZER electrical components are energy conversion devices that convert sound signals into electrical signals. Types include moving-coil, condenser, electret, and the recently emerging silicon microphones, as well as liquid and laser microphones. Most microphones are electret condenser microphones, which operate using a polymer diaphragm with permanently isolated charge.

SLZER electrical component classification

Classification by material: a, wirewound resistors are made by winding resistance wire around an insulating core, coated with a heat-resistant glaze insulation layer or insulating paint. Wirewound resistors have a low temperature coefficient, high resistance accuracy, good stability, heat and corrosion resistance, and are mainly used as precision high-power resistors; their disadvantages are poor high-frequency performance and a large time constant. b, carbon composition resistors are made by pressing carbon and synthetic plastic together. c, carbon film resistors are made by depositing a layer of carbon on a ceramic tube, forming crystalline carbon on a ceramic rod core. Carbon film resistors are low-cost, stable, have a wide resistance range, and low temperature and voltage coefficients, making them the most widely used resistors today. d, metal film resistors are made by depositing a layer of metal on a ceramic tube, using vacuum evaporation to deposit alloy material onto the surface of a ceramic rod core. Metal film resistors offer higher accuracy, better stability, lower noise, and a smaller temperature coefficient than carbon film resistors, and are widely used in instruments and communication equipment. e, metal oxide film resistors are made by depositing a layer of tin oxide on a ceramic tube, forming a layer of metal oxide on an insulating rod. As they are oxides themselves, they are stable at high temperatures, resistant to thermal shock, and have strong load capacity. By application, types include general-purpose, precision, high-frequency, high-voltage, high-resistance, high-power, and resistor networks.

SLZER electrical component characteristics

The static characteristics of a sensor refer to the relationship between the output and input quantities for static input signals. Since both input and output are independent of time in this state, their relationship, i.e., the sensor's static characteristics, can be described by an algebraic equation without time variables, or by a characteristic curve plotted with input quantity as the abscissa and the corresponding output quantity as the ordinate. Key parameters characterizing sensor static characteristics include: linearity, sensitivity, hysteresis, repeatability, and drift. (1) Linearity: refers to the degree to which the actual relationship curve between the sensor's output and input deviates from the fitted straight line. It is defined as the ratio of the maximum deviation between the actual characteristic curve and the fitted straight line over the full scale range to the full-scale output value. (2) Sensitivity: Sensitivity is an important indicator of a sensor's static characteristics. It is defined as the ratio of the increment in output quantity to the corresponding increment in input quantity that causes it. Sensitivity is denoted by S. (3) Hysteresis: Hysteresis is the phenomenon where the input-output characteristic curves do not coincide when the input quantity changes from small to large (forward stroke) and from large to small (reverse stroke). For the same magnitude of input signal, the output signals for the forward and reverse strokes are not equal; this difference is called the hysteresis error. (4) Repeatability: Repeatability refers to the degree of inconsistency in the characteristic curves obtained when the sensor's input quantity undergoes multiple consecutive full-scale changes in the same direction. (5) Drift: Sensor drift refers to the change in the sensor's output over time while the input quantity remains constant. There are two main causes of drift: one is the sensor's own structural parameters; the other is the surrounding environment (such as temperature, humidity, etc.). (6) Resolution: When the sensor's input increases slowly from a non-zero value, an observable change in output occurs after exceeding a certain increment; this input increment is called the sensor's resolution, i.e., the minimum input increment. (7) Threshold: When the sensor's input increases slowly from zero, an observable change in output occurs after reaching a certain value; this input value is called the sensor's threshold voltage.

SLZER electrical component composition

Internal accessories of circuit breakers: Auxiliary contacts are mechanically linked to the opening and closing mechanism of the circuit breaker's main circuit. They are mainly used to indicate the open/closed status of the circuit breaker and, when connected to the control circuit, implement control or interlocking of related electrical devices through the breaker's operation. Alarm contacts are used for accident alarms in circuit breakers. These contacts only operate after the circuit breaker trips and opens. They are mainly used when the breaker freely trips due to faults such as overload, short circuit, or undervoltage in the load. The alarm contact switches from its normally open position to a closed position, activating indicator lights, bells, or buzzers in the auxiliary circuit to display or alert to the breaker's fault trip status. Since the probability of free tripping due to load faults is relatively low. Shunt release: A shunt release is a release device energized by a voltage source, independent of the main circuit voltage. It is an accessory for remote opening operation. When the power supply voltage is any value between 70% and 110% of the rated control power supply voltage, the circuit breaker can reliably open. The shunt release operates on a short-time duty cycle; the coil energization time generally must not exceed 8S, otherwise the coil will burn out. To prevent coil burnout in molded case circuit breakers, a microswitch is connected in series with the shunt release coil. When the shunt release engages via the armature, the microswitch switches from normally closed to normally open, cutting off the control circuit power to the shunt release. Thus, even if the button is held down manually, the shunt coil will not remain energized, avoiding coil damage. After the circuit breaker is reclosed, the microswitch returns to the normally closed position. Undervoltage release: An undervoltage release is a device that causes the circuit breaker to open with or without delay when its terminal voltage drops to a specified range. Under thermal conditions, it must ensure reliable closure of the circuit breaker. Therefore, when a certain voltage drop occurs in the protected circuit's power supply, it automatically opens the circuit breaker to cut off power, protecting downstream loads or electrical equipment from undervoltage damage. During use, the undervoltage release coil is connected to the power side of the circuit breaker; the circuit breaker can only close after the undervoltage release is energized.

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