AC AND DC.....

OBJECTIVE
Learn what different AC and DC.
To understand how the AC and DC works.

CONTENT
ALTERNATING CURRENT (AC)
- An AC voltage is continually changing between positive (+) and negative (-).
- The rate of changing direction is called the Frequency of the AC and it is measured in Hertz (Hz) which is the number of forwards-backwards cycles per second.
- Mains electricity in the UK has a frequency of 50Hz.

DIRECT CURRENT (DC)

- Direct Current (DC) always flows in the same direction, but it may increase and decrease.
- A DC voltage is always positive (or always negative), but it may increase and decrease.
- Electronic circuits normally require a steady DC supply which is constant at one value or a smooth DC supply which has a small variation called ripple.

CONCLUSION
More understand about basic AC and DC for construct circuit Power Supply.
Next information, about the operation of Power Supply.