Unregulated Power Supply Block Diagram

The block diagram of a regulated power supply mainly includes a step down transformer a rectifier a dc filter and a regulator the construction working of a regulated power supply is discussed below.

Unregulated power supply block diagram. The output of the transformer is a pulsating sinusoidal ac voltage which is converted to pulsating dc with the help of a rectifier. It is good for a normal load. This type of power supply because of simplicity is the least costly and most reliable for low power requirements. Half wave unregulated power supplies are cheap and simple to construct that convert ac power to pulsating dc power.

We have seen that smoothing capacitors can be used to change this pulsating dc from the rectifier either half wave of full wave to a reasonably smooth and ripple free dc supply to power electronic circuits or to charge batteries. As shown in the figure above a small step down transformer is used to reduce the voltage level to the devices needs. You need to use a regulated power supply. Please become a patron to see full image and more on this article.

If you use other specific loads. This allows the voltage to stay stable regardless of the amount of current consumed by the load provided the predefined limits are not exceeded. A regulated dc power supply is also known as a linear power supply it is an embedded circuit and consists of various blocks. Some called these power supply that ac adapter.

The regulated power supply will accept an ac input and give a constant dc output. A regulated dc power supply is essentially an unregulated power supply with the addition of a voltage regulator. The block diagram of a regulated dc power supply is shown in above figure. The circuit diagram indicates that the output of the power supply can be connected to the mains earth the dotted line.

It consists of rectifier filter and voltage regulator circuits. Which now i will explain to you learn the unregulated power supply first. A step down transformer. Unregulated power supply diagram.

The load may be connected across the voltage regulator. When the 0v line is not grounded the output voltage will float and can produce around 24v 75v with respect to earth this is by no means unsafe but can give of a little bite if the output is touched. For example digital circuits preamplifiers etc. Its function is to convert the ac mains voltage to the rectified dc voltage.

In india a 1 ø supply is available at 230 volts. The basic building blocks of a regulated dc power supply are as follows. Commonly the bridge rectifier is used in regulated power supply. Regulated power supply circuit block diagram of regulated power supply.

What is a regulated power supply. Figure below shows the block diagram of a typical regulated dc power supply. Power supply block diagram. The main disadvantage is that the output voltage is not constant.