Electronic components capacitors (capacitor), an electronic device to act as a rectifier smoothing filter, power supply and decoupling, bypass the AC signal, AC coupling AC and DC circuit called a capacitor. Capacitor includes a fixed capacitor and a variable capacitor into two categories, wherein the fixed capacitor dielectric material can be used in accordance with divided mica capacitor, ceramic capacitor, paper / plastic film capacitors, electrolytic capacitors and glass glaze capacitors; variable capacitor may be glass, air, or a ceramic dielectric structure.

Battery, is through an electrochemical reaction, the positive electrode, a negative electrode active material, chemical energy, into electrical energy for a class of devices. After long-term research, development, ushered in a wide variety of chemical batteries, widely used in the situation. The huge device to a building in order to accommodate large was under small to breed in millimeters. All the time for our services better life.