The power supply is an electrical device that is used to provide power to the electrical load. The power supply is an important device for different engineering-related fields and appliances.
Everything that provides electrical power to a circuit, the device can be termed as a power supply as it is supplying some power to the circuit. In engineering, power supplies are used for providing power to different electrical loads in different conditions.
There are 3 common types of power supplies which are:
- Linearly regulated power supplies
- Unregulated power supplies, and
- Switching power supplies.
Another type of power supply is also introduced which is a ripple regulated power supply.
The different types of power supplies are used to provide power to different circuits and different appliances. Different power supplies come in with both input sources such as AC power supplies and DC power supplies. The voltage supplied by the power supply can be varied with the help of knobs present on the power supplies. The type of input can be also selected with the help of the switch or the button.
A typical power supply comprises components like a transformer, rectifier diodes, filters, and different voltage regulator diodes or voltage regulator ICs.