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triax electrical component is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input quantity (excitation quantity) meets specified requirements. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop). It is usually applied in automated control circuits. In effect, it is an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit switching in the circuit. A relay is an electrical control device that can accept a specified input quantity and maintain it for a sufficient duration to cause a predetermined step change in the controlled variable in the electrical output circuit. When the input quantity drops to a certain level and remains there for a sufficient duration, it returns to its initial state.

triax electrical component principle

When the voltage applied to a varistor is below its threshold, the current flowing through it is extremely small, equivalent to a resistor with infinite resistance. That is, when the voltage applied across it is below its threshold, it acts like a switch in the open state. When the voltage applied to a varistor exceeds its threshold, the current flowing through it surges, equivalent to a resistor with infinitesimal resistance. That is, when the voltage applied across it is above its threshold, it acts like a switch in the closed state. Protection principle of surge absorbers: In the standby state, the varistor has very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original design circuit. However, when an instantaneous surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (only a few ohms), causing a short circuit in the line, thereby protecting electronic products or more expensive components.

triax electrical component principle

In chemical batteries, the direct conversion of chemical energy into electrical energy results from spontaneous oxidation-reduction and other chemical reactions occurring inside the battery. These reactions take place at two electrodes respectively. The negative electrode active material consists of reducing agents with relatively negative potential and stability in the electrolyte, such as active metals like zinc, cadmium, and lead, as well as hydrogen or hydrocarbon compounds. The positive electrode active material consists of oxidizing agents with relatively positive potential and stability in the electrolyte, such as metal oxides like manganese dioxide, lead dioxide, and nickel oxide, oxygen or air, halogens and their salts, oxyacids and their salts, etc. The electrolyte is a material with good ionic conductivity, such as aqueous solutions of acids, bases, and salts, organic or inorganic non-aqueous solutions, molten salts, or solid electrolytes. When the external circuit is open, although there is a potential difference (open-circuit voltage) between the two poles, no current flows, and the chemical energy stored in the battery is not converted into electrical energy. When the external circuit is closed, current flows through the external circuit under the action of the potential difference between the two electrodes. Meanwhile, inside the battery, since there are no free electrons in the electrolyte, charge transfer must be accompanied by oxidation or reduction reactions at the interface between the active materials of the two poles and the electrolyte, as well as mass transfer of reactants and reaction products. Charge transfer in the electrolyte is also accomplished by ion migration. Therefore, normal charge transfer and mass transfer processes inside the battery are necessary conditions for ensuring normal electrical energy output. During charging, the direction of charge transfer and mass transfer processes inside the battery is exactly opposite to that during discharge; electrode reactions must be reversible to ensure the normal progress of reverse mass transfer and charge transfer processes. Therefore, reversibility of electrode reactions is a necessary condition for constituting a storage battery. This is the basic thermodynamic relationship between battery electromotive force and battery reaction, and also the basic thermodynamic equation for calculating battery energy conversion efficiency. In practice, when current flows through an electrode, the electrode potential deviates from the thermodynamically balanced electrode potential; this phenomenon is called polarization. The greater the current density (current passing through unit electrode area), the more severe the polarization. Polarization is one of the important causes of battery energy loss. There are three causes of polarization: (1) polarization caused by the resistance of various parts within the battery is called ohmic polarization; (2) polarization caused by the hindrance of the charge transfer process in the electrode-electrolyte interface layer is called activation polarization; (3) polarization caused by the sluggishness of the mass transfer process in the electrode-electrolyte interface layer is called concentration polarization. Methods to reduce polarization include increasing the electrode reaction area, reducing current density, raising the reaction temperature, and improving the catalytic activity of the electrode surface.

triax electrical component applications

PN junction photodiodes, like other types of photodetectors, are widely used in devices such as photoresistors, charge-coupled devices, and photomultiplier tubes. They can output corresponding analog electrical signals based on the illuminance of received light or switch between different states in digital circuits. Photodiodes are also used in consumer electronics, such as CD players, smoke detectors, and infrared remote control devices for televisions and air conditioners. For many applications, photodiodes or other photoconductive materials can be used. They can both be used to measure light, often operating in camera light meters, automatic brightness adjustment for street lights, etc. All types of optical sensors can be used to detect sudden illumination or to detect light emission within the same circuit system. Photodiodes are often combined with light-emitting devices to form a module, commonly referred to as an optocoupler. This allows the analysis of the motion of external mechanical components by analyzing the received light conditions. Another function of photodiodes is to act as an intermediary between analog and digital circuits, allowing the two circuit sections to be coupled via optical signals, which improves circuit safety. In scientific research and industry, photodiodes are often used to precisely measure light intensity because they have better linearity than other photoconductive materials. In medical application equipment, photodiodes are also widely used, such as in X ray computed tomography and pulse detectors. PIN junction photodiodes are generally not used to measure very low light intensities. If high-sensitivity detectors are required under weak light conditions, avalanche photodiodes, charge-coupled devices, or photomultiplier tubes can play a role, such as in astronomy, spectroscopy, night vision equipment, laser rangefinders, and other application products.

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