ELEKTRODESIGNVE electrical components Germany ELEKTRODESIGNVE model ELEKTRODESIGNVE price

ELEKTRODESIGNVE electrical components are instruments used to transform voltage. However, the purpose of a transformer in transforming voltage is to facilitate the transmission of electrical energy, so its capacity is large, generally calculated in kilovolt-amperes or megavolt-amperes; whereas the purpose of a voltage transformer in transforming voltage is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power, and electrical energy of the line, or to protect valuable equipment, motors, and transformers in the line when a fault occurs. Therefore, the capacity of a voltage transformer is very small, generally only a few volt-amperes or tens of volt-amperes, with a maximum not exceeding one thousand volt-amperes.

ELEKTRODESIGNVE electrical component functions

The main functions of a potentiometer in a circuit include several aspects: 1. Used as a voltage divider, a potentiometer is a continuously adjustable resistor. When the knob or slider of the potentiometer is adjusted, the moving contact slides on the resistive element. At this time, an output voltage related to the external voltage applied to the potentiometer and the angle or travel of the movable arm can be obtained at the output terminal of the potentiometer. 2. Used as a rheostat, when a potentiometer is used as a rheostat, it should be connected as a two-terminal device, so that a smoothly and continuously changing resistance value can be obtained within the travel range of the potentiometer. 9. Used as a current controller, when a potentiometer is used as a current controller, one of the selected current output terminals must be the terminal led out from the sliding contact.

ELEKTRODESIGNVE electrical component functions

A relay is an automatic switching component with isolation functionality, widely used in remote control, telemetry, communications, automatic control, mechatronics, and power electronic equipment, and is one of the most important control components. Relays generally have a sensing mechanism (input part) capable of responding to certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.); an actuating mechanism (output part) capable of implementing "on" and "off" control of the controlled circuit; and between the input and output parts of the relay, there is an intermediate mechanism (drive part) for coupling and isolating the input quantity, processing functions, and driving the output part. As a control component, relays have the following functions in summary: (1) Expand control range: For example, when the control signal of a multi-contact relay reaches a certain value, it can simultaneously switch, open, or close multiple circuits according to different forms of contact groups. (2) Amplification: For example, sensitive relays and intermediate relays can use a very small control quantity to control high-power circuits. (3) Signal integration: For example, when multiple control signals are input into a multi-winding relay in a prescribed form, they are compared and integrated to achieve the predetermined control effect. (4) Automatic, remote control, and monitoring: For example, relays on automatic devices can form program control circuits together with other electrical appliances, thereby achieving automated operation.

ELEKTRODESIGNVE electrical component functions

Low-power resistors are typically composed of carbon film encapsulated in a plastic housing, while high-power resistors are typically wirewound resistors, made by winding metal wire with high resistivity around a ceramic core. If the resistance value of a resistor is close to zero ohms (for example, a large-cross-section wire between two points), the resistor offers no obstruction to current, the circuit parallel to such a resistor is short-circuited, and the current is infinitely large. If a resistor has infinite or very high resistance, the circuit series-connected with this resistor can be regarded as an open circuit, and the current is zero. Resistors commonly used in industry lie between these two extremes; they have a certain resistance and can pass a certain current, but the current is not as large as in a short circuit. The current-limiting function of a resistor is similar to the function of a small-diameter pipe connected between two large-diameter pipes restricting water flow. Resistance, usually abbreviated as R, is a fundamental property of a conductor, related to the conductor's size, material, and temperature. Ohm's law states that I=U/R, so R=U/I. The basic unit of resistance is the ohm, represented by the Greek letter "Ω", defined as: the resistance corresponding to a current of one ampere generated when one volt is applied across a conductor. The main function of resistance is to obstruct the flow of current. In fact, "resistance" refers to a property, while "resistor" usually refers to a component such as a resistor in electronic products. Ohm is often abbreviated as ohm. Common units for expressing resistance values also include kilo-ohm (kΩ), mega-ohm (MΩ), and milli-ohm (m Ω).

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