ELROZ electrical components Germany ELROZ model ELROZ price

ELROZ electrical components are devices that change AC voltage using the principle of electromagnetic induction. The main components are the primary coil, secondary coil, and iron core (magnetic core). Main functions include: voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer). Transformers can be classified by application into: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type substation test transformers, phase-shifting transformers, high-current transformers, excitation transformers, etc.

ELROZ electrical component parameters

The main parameters of transistors include current amplification factor, dissipated power, frequency characteristics, maximum collector current, maximum reverse voltage, and reverse current. Amplification factor: The DC current amplification factor, also known as the static current amplification factor or DC amplification ratio, refers to the ratio of the transistor's collector current to the base current when there is no changing signal input in a static state. AC amplification factor: The AC amplification factor, also known as the AC current amplification factor or dynamic current amplification factor, refers to the ratio of the change in the transistor's collector current to the change in base current under AC conditions. Dissipated power: Dissipated power, also known as the maximum allowable collector dissipated power PCM, refers to the maximum collector dissipated power when the transistor parameters do not exceed the specified allowable values. Dissipated power is closely related to the transistor's maximum allowable junction temperature and maximum collector current. When using a transistor, its actual power consumption must not exceed the PCM value; otherwise, the transistor will be damaged due to overload. When the transistor's operating frequency exceeds the cutoff frequency, its current amplification factor will decrease as the frequency increases. The maximum oscillation frequency refers to the frequency at which the transistor's power gain drops to 4. Typically, the maximum oscillation frequency of high-frequency transistors is lower than the common-base cutoff frequency, while the characteristic frequency is higher than the common-base cutoff frequency and lower than the common-collector cutoff frequency. Maximum current: The maximum collector current refers to the maximum current allowed to pass through the transistor's collector. Maximum reverse voltage: The maximum reverse voltage refers to the highest operating voltage allowed to be applied to the transistor during operation. It includes the collector-emitter reverse breakdown voltage, collector-base reverse breakdown voltage, and emitter-base reverse breakdown voltage. Collector reverse breakdown voltage refers to the maximum allowable reverse voltage between the collector and emitter when the transistor base is open. Base reverse breakdown voltage refers to the maximum allowable reverse voltage between the collector and base when the transistor emitter is open. Emitter reverse breakdown voltage refers to the maximum allowable reverse voltage between the emitter and base when the transistor collector is open. The reverse current between the bases, also known as the collector junction reverse leakage current, refers to the reverse current between the collector and base when the transistor emitter is open. The reverse breakdown current between the emitters refers to the reverse leakage current between the collector and emitter when the transistor base is open, also known as the penetration current. The smaller this current value, the better the performance of the transistor.

ELROZ electrical component principles

A DC power supply has two electrodes, positive and negative. The positive electrode has a higher potential, and the negative electrode has a lower potential. When the two electrodes are connected to a circuit, they maintain a constant potential difference between the two ends of the circuit, thereby forming a current from the positive electrode to the negative electrode in the external circuit. Relying solely on the difference in water levels cannot maintain a steady flow of water, but using a pump to continuously move water from a low point to a high point can maintain a certain water level difference and form a steady flow. Similarly, relying solely on the electrostatic field generated by electric charges cannot maintain a steady current. However, with the help of a DC power supply, non-electrostatic forces (referred to as "non-electrostatic force") can be used to return positive charges from the negative electrode with lower potential through the interior of the power supply to the positive electrode with higher potential, thereby maintaining the potential difference between the two electrodes and forming a steady current. Therefore, a DC power supply is an energy conversion device that converts other forms of energy into electrical energy to supply the circuit, maintaining the steady flow of current.

ELROZ 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 on the two fixed terminals of the potentiometer is the rated power of the potentiometer. 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. Allowable 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%. 9. Resistance variation law: Refers to the relationship between the resistance change and the rotation angle (or sliding travel) of the sliding contact. This relationship can take 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, recorders, phonographs, and televisions. If a similar product cannot be 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.

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