ceramic dielectric การใช้

• The ceramic dielectric is characterized by a nonlinear change of capacitance over the temperature range.
• In addition to air and plastic, trimmers can also be made using a ceramic dielectric.
• Because Class 2 ceramic capacitors use ferroelectric ceramics dielectric, these types of capacitors may have electrical effects called microphonics.
• Because the thickness of the ceramic dielectric layer can be easily controlled and produced by the desired application voltage, ceramic capacitors are available with rated voltages up to the 30 kV range.
• Paraelectric titanium dioxide ( rutile ) was used as the first ceramic dielectric because it had a linear temperature dependence of capacitance for temperature compensation of resonant circuits and can replace mica capacitors . 1926 these ceramic capacitors were produced in small quantities with increasing quantities in the 1940s.