The Behavior of Polyester Film Energy Storage Capacitors

An experimental study of the electrical properties of energy storage capacitors utilizing Mylarl polyester films has shown how the weight and volume of such capacitors could be reduced while improving reliability and energy density. Test data relate the lifetime of a capacitor to its operating voltage, discharge frequency, and temperature. The effect on life of percent current reversal and dielectric film thickness is also demonstrated. The results should enable capacitor designers to tailor products to specific applications, thereby achieving optimum performance.