MOXA electrical components Germany MOXA model MOXA price

MOXA electrical components refer to an electrical device that disconnects the circuit by melting the fusible element with the heat generated by itself when the current exceeds the specified value. A fuse is a current protection device made based on the principle that when the current exceeds the specified value for a period of time, the heat generated by itself melts the fusible element, thereby disconnecting the circuit. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices. Using a metal conductor as the fusible element connected in series in the circuit, when overload or short-circuit current passes through the fusible element, it melts due to its own heating, thereby disconnecting the circuit. The fuse has a simple structure and is easy to use, and is widely used in power systems, various electrical equipment, and household appliances as a protective device.

MOXA electrical component structure

For rubber and plastic power supply cables, copper cores are preferred for power, lighting, and internal installation of electrical equipment; compacted wire cores are recommended for large cross-section conductors. Conductors for fixed installation generally adopt Class 1 or Class 2 conductor structures. Insulation materials generally include four types: natural styrene-butadiene rubber, polyvinyl chloride (PVC), polyethylene, and nitrile-PVC compounds. Heat-resistant power cables use PVC with a temperature resistance of 90 °C. Sheath materials generally include five types: PVC, cold-resistant PVC, ant-termite PVC, black polyethylene, and neoprene rubber. Black polyethylene and neoprene sheathed power cables are suitable for extreme cold resistance and outdoor overhead laying. In environments with external forces, corrosion, or humidity, power cables with rubber or plastic sheaths can be used. Rubber and plastic flexible power cables use copper cores with a flexible structure, consisting of stranded single wires; flexible conductors generally adopt Class 5 or Class 6 conductor structures. Insulation materials generally include natural styrene-butadiene rubber, PVC, or soft polyethylene plastic. The cabling pitch multiple is small. The outer protective layer uses cotton yarn braiding to prevent overheating and damage to the insulation layer. To facilitate use and simplify production processes, a three-core balanced structure is adopted, which saves production man-hours and improves production efficiency. For shielded insulated power cables, the conductor cores may be tin-plated in certain applications; the surface coverage density of the shielding layer should comply with standards or meet user requirements; the shielding layer should be braided or wrapped with tinned copper wires; if an extruded sheath is added outside the shield, the shield may use soft round copper wires for braiding or wrapping. To prevent internal interference between cores or pairs, individual phase shielding structures for each core (or pair) can be produced. General rubber-sheathed rubber power cables use stranded copper flexible wires with a flexible structure; paper wrapping is allowed on the surface of large cross-sections to improve bending performance. Natural styrene-butadiene rubber is used for insulation, which has good aging performance. Neoprene rubber or neoprene-based mixed rubber formulations are used for outdoor products. Mining rubber power cables use copper cores with a flexible structure, consisting of stranded single wires: flexible conductors generally adopt Class 5 or Class 7 conductor structures. Rubber is generally used as the insulation material. The cabling pitch multiple is small. Many products use metal braiding to uniform the electric field and improve the sensitivity display of the insulation condition. There is a thicker outer sheath, and color coding is performed underground in mines to allow construction personnel to understand the different voltage levels of the rubber power cables.

MOXA electrical component principle

A varactor diode is a special type of diode. When a forward bias is applied, a large current is generated, the depletion region of the PN (positive-negative) junction becomes narrower, the capacitance increases, and a diffusion capacitance effect is produced; when a reverse bias is applied, a transition capacitance effect is produced. However, since leakage current occurs when forward bias is applied, reverse bias is generally supplied in applications. Varactor diodes, also known as voltage-controlled variable capacitors, are semiconductors that change junction capacitance according to the applied voltage variation. That is, as a variable capacitor, it can be applied to resonant circuits such as FM tuners and TV tuners, and FM modulation circuits. In fact, we can view it as a PN junction. If a reverse voltage V is applied to the PN junction (varactor diodes are used in reverse), electrons in the N-type semiconductor are drawn to the positive electrode, and holes in the P-type semiconductor are drawn to the negative electrode, forming a depletion layer with neither electrons nor holes. Let the width of this depletion layer be d, which changes with the reverse voltage V. Thus, as the reverse voltage V increases, the depletion layer d widens, and the diode capacitance C decreases (according to C=kS/d); as the reverse voltage decreases, the depletion layer width d narrows, and the diode capacitance increases. The change in reverse voltage V causes changes in the depletion layer, thereby changing the junction capacitance C of the voltage-controlled variable capacitor, achieving the desired effect. Varactor diodes are semiconductor devices made based on the principle of variable capacitance between PN junctions, used as variable capacitors in high-frequency tuning, communication, and other circuits. Varactor diodes come in various package forms, including glass encapsulation (glass seal), plastic encapsulation (plastic seal), metal housing encapsulation (metal seal), and leadless surface mount packages. Typically, low and medium power varactor diodes use glass, plastic, or surface mount packages, while higher power varactor diodes mostly use metal seals. Common varactor diode parameters.

MOXA electrical component principle

An AC power supply that provides stable voltage and frequency is called an AC stabilized power supply. Most domestic manufacturers focus on AC voltage stabilization. The following briefly describes the classification characteristics of AC stabilized power supplies available in the market. Parameter adjustment (resonance) type: The basic principle of voltage stabilization for this type of stabilized power supply is LC series resonance. Early magnetic saturation stabilizers belong to this category. Its advantages are: simple structure, few components, high reliability, wide voltage stabilization range, strong anti-interference and overload capacity. Disadvantages are: high energy consumption, high noise, heavy weight, and high cost.

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