In the 220V power supply circuit, you can almost always find safety capacitor. So what kind of capacitor is a safety capacitor? What kind of role does it play?
In the field of electronic engineering, the application of chip capacitors is extremely common, and the dielectric material of the capacitor directly affects its performance and stability. Capacitors with different dielectric materials are suitable for different application environments and circuit requirements, so understanding their differences is critical to the design and reliability of electronic products.
Varistor we usually see the symbol “VDR”, it is a non-linear volt-ampere characteristics of the resistor device, with the characteristics of the resistance, but also other characteristics, it is mainly used in front of the voltage input to clamp the input voltage, limited to a certain range, while absorbing the excess current, it is the response time of the ns level, very fast, to protect the circuit behind a special component, especially in the surge protection. We often use zinc oxide varistors.
CBB capacitors use polypropylene film as the dielectric (different CBB capacitors might use different internal dielectrics, but the core material is polypropylene film), with aluminum foil as the electrodes.
Aluminum capacitors and electrolytic capacitors are two common types of capacitors, which play an important role in electronic circuits. Although they have some similarities in some aspects, they are very different in many key characteristics.
In power supplies, whether linear or switch-mode power supplies using AC sources and diodes, smoothing capacitors are typically used to smooth the raw rectified output before it is applied to any regulator or similar electronic circuit.
A capacitor is composed of two metal electrodes with an insulating dielectric material sandwiched between them. When a voltage is applied across the two metal electrodes, charges are stored on the electrodes, making the capacitor an energy storage component.
A film capacitor is a type of capacitor that uses metal foil as the electrodes, which is combined with plastic films such as polyester, polypropylene, polystyrene, or polycarbonate. These materials are layered and rolled into a cylindrical structure.
Y2 Metallized Polypropylene Film Capacitors, commonly referred to as MPY/Y2 capacitors, are a specific type of safety capacitor designed for applications where the capacitor is connected directly to the mains supply and serves a protective function.
Q Factor (Quality Factor) is a dimensionless parameter used to describe the performance of energy storage components (such as inductors and capacitors) or resonant circuits. Specifically, the Q factor measures the ratio of the energy stored in the component to the energy dissipated per cycle.
Features of Double-Sided MKP Film Capacitor MMKP82,Doublesided metallized polypropylene film,Low loss and small inherent temperature rise,Negative temperature coefficient of capacitance,Excellent active and passive flam resistant abilities.
At present, USB chargers, PD chargers, PD power adapters are developing in the direction of miniaturization, high efficiency, energy saving and environmental protection, multi-purpose, the correct understanding and selection of a variety of components is the basis for the development, design, production and production of chargers and power adapters to ensure that.
Smart water meters commonly use lithium batteries for controlling valve opening and closing. Lithium batteries are favored for their lightweight, high energy density, and low self-discharge rates.
The NTC sensor element is the basis for the realization of the functions of NTC temperature sensors in various applications and is very common in other types of electronic products, such as resettable fuses and automatically adjustable heaters.
CBB65 capacitors ,also called AC motor run capacitor, use edge-thickened metallized zinc-aluminum film as electrodes and dielectric. The film is wound by a winding machine and then inserted into an aluminum case.