44/5/4 in stock German 44/5/4 electrical components 44/5/4 inventory

44/5/4 Electrical components are components that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance; it only impedes changes in current. If the inductor is in a state with no current flowing through it, when the circuit is connected, it will attempt to impede the current from flowing through it; if the inductor is in a state with current flowing through it, when the circuit is disconnected, it will attempt to maintain the current unchanged. Inductors are also known as chokes, reactors, or dynamic reactors.

44/5/4 Electrical component parameters

The main parameters of potentiometers include nominal resistance, rated power, resolution, sliding noise, resistance variation characteristic, wear resistance, zero-position resistance, and temperature coefficient. 1. Rated power: The maximum power allowed to be dissipated across the two fixed terminals of a potentiometer is the rated power of the potentiometer. During use, note that the rated power is not equal to the power between the center tap and the fixed terminal. The rated power of a potentiometer refers to the maximum power allowed to be consumed under long-term continuous load at the specified rated temperature, when the atmospheric pressure is 87~107kPa. 2. Nominal resistance: The nominal resistance marked on the product, whose series is similar to that of resistors. 3. Permissible error class: The error range between the measured resistance and the nominal resistance allows for errors of 20%, 10%, 5%, 2%, and 1% depending on the precision class. The precision of precision potentiometers can reach 0.1%. 12. Resistance variation law: Refers to the relationship between resistance change and the rotation angle (or sliding travel) of the sliding contact. This relationship can be in any functional form; commonly used types are linear, logarithmic, and reverse logarithmic (exponential). In use, linear potentiometers are suitable as voltage dividers; reverse logarithmic (exponential) potentiometers are suitable as volume controllers in radios, tape recorders, phonographs, and televisions. If a replacement of the same type is not found during maintenance, a linear type can be used as a substitute, but a logarithmic type should not be used. Logarithmic potentiometers are only suitable for tone control, etc.

44/5/4 Electrical component parameters

1. Stable voltage refers to the stable voltage value generated across the terminals when a Zener diode passes the rated current. This value changes slightly with operating current and temperature. Due to differences in manufacturing processes, the stabilization voltage of Zener diodes of the same model is not completely consistent. 2. Reverse leakage current refers to the current passing through the Zener diode when it generates a stable voltage. Below this value, although the Zener diode can still stabilize voltage, the stabilization effect will deteriorate; above this value, as long as the rated power dissipation is not exceeded, it is permissible, and the stabilization performance will be better, but it will consume more electrical energy. 3. Dynamic resistance refers to the ratio of the voltage change across the Zener diode terminals to the current change. This ratio changes with the operating current; generally, the larger the operating current, the smaller the dynamic resistance. 4. Rated power dissipation is determined by the allowable temperature rise of the chip, and its value is the product of the stable voltage and the maximum allowable current. 5. Temperature coefficient: If the temperature of the Zener diode changes, its stable voltage will also undergo slight changes. The relative change in voltage across the tube terminals caused by a temperature change of 1℃ is the temperature coefficient (unit: %/℃). Generally speaking, stabilization voltages below 6V belong to Zener breakdown, and the temperature coefficient is negative; the temperature coefficient is positive. When the temperature rises, the depletion layer decreases. In the depletion layer, the valence electrons of atoms rise to higher energy levels, and a smaller electric field strength can excite valence electrons from atoms to produce Zener breakdown, so its temperature coefficient is negative. Avalanche breakdown occurs when the depletion layer is wider and the electric field strength is lower. An increase in temperature increases the vibration amplitude of lattice atoms, hindering the movement of carriers. In this case, only by increasing the reverse voltage can avalanche breakdown occur, so the voltage temperature coefficient of avalanche breakdown is positive. For occasions with high requirements for power supply, two Zener diodes with opposite temperature coefficients can be connected in series for compensation. Due to mutual compensation, the temperature coefficient is greatly reduced. 10. Reverse leakage current refers to the leakage current generated by the Zener diode under the specified reverse voltage.

44/5/4 Electrical component characteristics

The static characteristics of a sensor refer to the relationship between the output quantity and the input quantity for static input signals. Since the input and output quantities are independent of time in this case, their relationship, i.e., the static characteristics of the sensor, can be described by an algebraic equation without time variables, or by a characteristic curve drawn with the input quantity as the abscissa and the corresponding output quantity as the ordinate. The main parameters characterizing the static characteristics of sensors include: linearity, sensitivity, hysteresis, repeatability, drift, etc. ① Linearity: Refers to the degree to which the actual relationship curve between the sensor 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 the static characteristics of a sensor. It is defined as the ratio of the increment of the output quantity to the corresponding increment of the input quantity causing that increment. Use S to represent sensitivity. ③ Hysteresis: Hysteresis is the phenomenon where the input-output characteristic curves do not coincide during the change of the input quantity from small to large (forward stroke) and from large to small (reverse stroke). For input signals of the same magnitude, the output signal magnitudes of the sensor's forward and reverse strokes are not equal; this difference is called the hysteresis difference. ④ Repeatability: Repeatability refers to the degree of inconsistency in the characteristic curves obtained when the sensor input changes continuously multiple times over the full scale in the same direction. ⑤ Drift: Sensor drift refers to the phenomenon where the sensor output changes with time while the input remains unchanged. There are two reasons for 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 input slowly increases from a non-zero value, after exceeding a certain increment, the output undergoes an observable change. This input increment is called the sensor's resolution, i.e., the minimum input increment. ⑦ Threshold: When the sensor input slowly increases from zero, after reaching a certain value, the output undergoes an observable change. This input value is called the sensor's threshold voltage.

Weidou Intelligent Technology specializes in selling German 44/5/4 connectors, 44/5/4 switches, 44/5/4 relays, 44/5/4 controllers, 44/5/4 plugs, 44/5/4 sensors, 44/5/4 resistors, 44/5/4 capacitors, 44/5/4 buses, 44/5/4 modules, 44/5/4 cables, 44/5/4 power supplies, 44/5/4 interfaces, 44/5/4 gateways, 44/5/4 circuit breakers, 44/5/4 original German imports. Welcome customers to inquire and order.