Knowledge

⭐️Paper dielectric film capacitors are the earliest film capacitors. They are wound capacitors with capacitor paper as the medium and aluminum foil as the electrode. They are available in sealed and semi-sealed structures. ⭐️The dielectric coefficient of capacitor paper is about 2.2. Because it is made of plant cellulose, it is porous, and generally contains 20% [...]

☀️The main factors affecting the dissipation factor of film capacitors are frequency, temperature, humidity and so on. ❓What is the relationship between dissipation factor and frequency? ✨If the inductive reactance Ls is not considered, for ƒ <ƒt (where ƒt is the resonant frequency), the equivalent circuit of the capacitor shows that the disipation factor tanδ is [...]