472MWS103KT

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Film capacitors, or plastic film capacitors, are electrical components used to store charge and energy, and are typically found in power supplies, energy meters, dimmers and television sets. The 472MWS103KT is a perfect example of a film capacitor, purpose-built for use in mid-frequency high current applications.

Capacitors are divided into two categories: non-polarized and polarised. The 472MWS103KT is a non-polarised capacitor, which means that when connecting it to the mains, the capacitor does not create any electrical field, making it suitable for use with AC currents. This also means that the capacitor is symmetrically charged and discharged, with no risk of overcharging.

In terms of its construction, the 472MWS103KT consists of two plates separated by an insulating film. The film, which can be made of polyurethane or linear carbon, has a dielectric constant which determines the capacitor\'s capacitance. This capacitance is measured in Farads and is the storage capacity of the capacitor.

The 472MWS103KT has a capacitance rating of 0.1 µF, a maximum voltage rating of 600 V DC, and a temperature range of -55°C to +105°C which makes it suitable for most power applications. It has a dissipation factor (Tangent Delta) of 0.10 (20°C) and a leakage current of less than 1µA.

The 472MWS103KT is also known as a pulse capacitor, due to its ability to hold a charge and is widely employed in pulse circuits. Its main application is in surge current suppression in motor run capacitors, in which it limits current and energy, thus maintaining the energy levels of the system.

The 472MWS103KT is also used in high speed switching, and especially in TV sets, to reduce the number of high voltage spikes that can occur. It works by reducing the rate of rise of the magnetics, and therefore preventing any induced current from the supply to the circuits, thus reducing any possible damage.

The 472MWS103KT also has an application in audio systems such as loudspeakers, where it acts as a buffer between the amplifier and the loudspeaker, by absorbing energy pulses produced by the amplifier and releasing them at a lower voltage to protect the loudspeaker. This helps to reduce distortion and improve the sound quality.

When it comes to its working principle, the 472MWS103KT film capacitor stores energy much like a conventional capacitor. When a charge is applied to the plates which make up the capacitor, this charge is stored in the insulator between the two plates, known as the dielectric layer. This charge will act as an electric field, which in turn will help to reduce voltage level.

When electrons are released from either plate, the charge stored in the dielectric layer also begins to dissipate. This is known as the discharge current, and is the capacitor\'s way of dissipating energy back into the circuit. This discharge current will reduce the voltage across the plates and reduce the capacitor’s capacitance.

Overall, the 472MWS103KT is a flexible, robust and efficient film capacitor that is well suited for a variety of power applications. It provides superior performance in terms of current limiting, voltage regulation and surge current suppression in motor run applications, and its ability to reduce voltage level helps to reduce the risk of damage to electrical equipment.

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