Electronics Online

Rechargeable batteries are also known as secondary battery. Unlike the primary cells, these batteries can be recharged.

Basic information on rechargeable batteries
One important nominal size of the battery is its capacity. This capacity is measured in ampere hours (AH) or milliamperes hours (mAh). Capacity is described as follows: A battery with a capacity of 800 mAh can supply 800 mA in 1 hour, or 200 mA in 4 hours.

Primary Battery or also known as primary cells. They are intended for single use only and are not rechargeable. They contain two electrodes (anode and cathode) and electrolyte. This can consistof different materials, depending on the type of battery.

Since audio electronics presence, an audio transformer has played an important role. When the transformer compared with modern electronic components it will look big, heavy, and expensive but it continues to be the most effective in the solution of many audio applications. The usefulness of transformers lies in the fact that can be transferred electrical energy from one circuit to another without a direct connection.