Dietzel Univolt electrical components Germany Dietzel Univolt models Dietzel Univolt prices

Dietzel Univolt electrical components refer to lightning arrestor tubes or antenna switch tubes used for overvoltage protection, containing two or more electrodes and a certain amount of inert gas. A gas discharge tube is a gap-type lightning protection component used in the lightning protection of communication systems. A gas discharge tube is a gap-type lightning protection component that has been widely applied in the lightning protection of communication systems. Discharge tubes are commonly used in the first or first two stages of multi-stage protection circuits to discharge instantaneous lightning overcurrents and limit overvoltages. Due to the high inter-electrode insulation resistance and low parasitic capacitance of discharge tubes, they have clear advantages for lightning protection of high-frequency signal lines. The main disadvantages of the protection characteristics of discharge tubes lie in their large discharge delay and less-than-ideal operating sensitivity, making it difficult to effectively suppress lightning waves with steep wavefront rise rates, and there is a follow-current issue in the lightning protection of power systems. Commonly used gas discharge tubes include two-electrode and three-electrode discharge tubes, whose encapsulation housing materials are mostly ceramic, hence they are called ceramic discharge tubes.

Dietzel Univolt electrical component structure

The simplest switch has two metal pieces called "contacts"; when the two contacts touch, they form a current loop, and when they do not touch, the current path is open. When selecting contact metals, their resistance to corrosion must be considered, because most metals form insulating oxides after oxidation, preventing the contacts from working properly. Selecting contact metals also requires considering factors such as electrical conductivity, hardness, mechanical strength, cost, and toxicity. Sometimes anti-corrosion metals are plated onto the contacts. Plating is generally applied to the contact surfaces to avoid performance degradation due to oxides. Sometimes non-metallic conductive materials, such as conductive plastics, are used for the contact surfaces. In addition to contacts, switches have movable parts that make the contacts conductive or non-conductive. Switches can be classified into lever switches, push-button switches, rocker switches, etc., based on the different movable parts, and the movable parts can also be other types of mechanical linkages.

Dietzel Univolt electrical component classification

Inductor coils commonly used in circuits are roughly classified as follows: By inductance form: fixed inductors, variable inductors. By magnetic core property: air-core coils, ferrite coils, iron-core coils, copper-core coils. By operating nature: antenna coils, oscillator coils, choke coils, trap coils, deflection coils. By winding structure: single-layer coils, multi-layer coils, honeycomb coils, close-wound coils, spaced-wound coils, self-supporting coils, honeycomb coils, random-wound coils.

Dietzel Univolt electrical component principle

A resistor consists of three parts: the resistive element, the backbone, and the leads (for solid-core resistors, the resistive element and backbone are combined into one), and only the resistive element determines the resistance value. The volt-ampere characteristic is represented by a graphical curve showing the relationship between voltage and current at the resistor terminals; when voltage and current are proportional (the characteristic is a straight line), it is called a linear resistor; otherwise, it is called a non-linear resistor. The maximum power allowed to be dissipated by a resistor during continuous operation at the rated temperature (maximum ambient temperature) tR. For each type of resistor, a maximum operating voltage is also specified, meaning that even if the rated power is not reached, the maximum operating voltage must not be exceeded when the resistance value is high. The rated power of a resistor refers to the maximum power allowed to be consumed by the resistor during long-term continuous operation in DC or AC circuits. Load characteristics: When the ambient working temperature is below tR, the resistor must not exceed its rated power; when it exceeds tR, the load power must be derated. Each type of resistor has specified load characteristics. In addition, the allowable load is correspondingly reduced under low atmospheric pressure. Under pulse load, the average pulse power is far lower than the rated power, and separate regulations generally apply.

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