What is the difference between unregulated and regulated power supply?
Well, just like the name implies, the difference between a regulated and unregulated power supply is that the output voltage of an unregulated power supply is not regulated. Unregulated power supplies by their nature do not produce a clean (i.e. constant) voltage like regulated power supplies do.
What is called regulated power supply?
A regulated power supply is an embedded circuit; it converts unregulated AC (Alternating Current) into a constant DC. Its function is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits.
Why do we need a regulated power supply?
It is the most inexpensive filter for our basic 5V power supply design. A regulator is the linear integrated circuit use to provide a regulated constant output voltage. Voltage regulation is very important because we do not need a change in output voltage when the load changes.
Can a 5V DC power supply be made without a rectifier?
A rectifier circuit is the combination of diodes arranged in such a manner that converts AC into DC voltage. Without the rectifier circuit, it is not possible to have the required output 5V DC voltage. This circuit comes in nice integrated packages or you can make it using four diodes as well. You will see how we design it in later sections.
What should the secondary voltage be for a 5V DC power supply?
This means we should select the transformer with a secondary voltage value equal to 9V or at least 10% more than 9V. From these points, for the 5V DC power supply design, we can select a transformer of current rating 1A and a secondary voltage of 9V.
Which is the best filter for a 5V power supply?
The best filter in our case is the capacitor. You may have heard, a capacitor is a charge storing device. But actually, it can be best used as a filter. It is the most inexpensive filter for our basic 5V power supply design. A regulator is the linear integrated circuit use to provide a regulated constant output voltage.