A power supply is an electronic circuit that converts the voltage of an alternating current (AC) into a direct current (DC) voltage. It is basically consisting of the following elements:
transformer, rectifier, filter and regulator circuits
.
What is the basic power supply?
AC-DC Fundamentals
AC is also called mains electricity, household current, domestic power, line power, or wall power because it is the voltage supplied by a wall outlet. Worldwide, AC voltages range from
100 to 240 V
.
What are the 4 stages of power supply?
- Transformer – steps down high voltage AC mains to low voltage AC.
- Rectifier – converts AC to DC, but the DC output is varying.
- Smoothing – smooths the DC from varying greatly to a small ripple.
- Regulator – eliminates ripple by setting DC output to a fixed voltage.
What are the main components of the DC power supply?
From the block diagram, the basic power supply is constituted by four elements viz
a transformer, a rectifier, a filter, and a regulator put together
. The output of the dc power supply is used to provide a constant dc voltage across the load.
What are components of power supply?
- The Transformer. The transformer is used to step the AC voltage up and down as well as provide isolation between the electronic system and the AC power. …
- The Rectifier. The rectifier is responsible for changing AC power to pulsating DC power. …
- The Filter. …
- The Regulator Circuits.
What are the 3 types of power supply?
There are three major kinds of power supplies:
unregulated (also called brute force), linear regulated, and switching
. The fourth type of power supply circuit called the ripple-regulated, is a hybrid between the “brute force” and “switching” designs, and merits a subsection to itself.
What are the three functions of power supply?
Power Supply Functions
Provide some method of voltage division to meet equipment needs.
Change ac voltage to pulsating dc voltage by either half-wave
or full-wave rectification. Filter pulsating dc voltage to a pure dc steady voltage for equipment use. Regulate power supply output in proportion to the applied load.
Why does a power supply need a fan?
Power supplies generate heat which could damage the components in the circuit. Because of this, power supplies need
to have a cooling system to dissipate excess heat
. … Since they consume additional power, fans decrease the power supply efficiency.
What is power supply and its function?
A power supply is an
electrical device that supplies electric power to an electrical load
. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load.
What are the types of power supply?
- Power Supply Circuit. …
- 1) SMPS- Switched Mode Power Supply. …
- 2) Uninterruptible Power Supply. …
- 3) AC Power Supply. …
- 4) DC Power Supply. …
- 5) Regulated Power Supply. …
- 6) Programmable Power Supply. …
- 7) Computer Power Supply.
Is zener a diode?
A Zener diode is
a silicon semiconductor device that permits current to flow in
either a forward or reverse direction. The diode consists of a special, heavily doped p-n junction, designed to conduct in the reverse direction when a certain specified voltage is reached.
What is the primary purpose of a power supply?
1 Introduction. The purpose of a mains power supply is
to convert the power delivered to its input by the sinusoidally alternating mains electricity supply into power available at its output in the form of a smooth and constant direct voltage
.
What are the 5 factors to consider when selecting a power supply?
- #1 Wattage. The first thing you need to do when choosing a PSU is calculate the total wattage needed for your build. …
- #2 Price. …
- #3 Rating. …
- #4 Modularity. …
- #5 Looks. …
- So, Which PSU is For You?
What are the types of DC power supply?
- Battery Eliminator.
- Constant Voltage Supply.
- Constant Voltage/Constant Current Supply.
- Multiple Output Supply.
- Programmable Supply.
- Multi-range Supply.
Where is DC power supply used?
This form of power is most commonly produced by sources such as solar cells, batteries, and thermocouples. DC power is widely used in
low voltage applications
such as charging batteries, automotive applications, aircraft applications and other low voltage, low current applications.
What are the 2 types of power supply?
Two types of power supplies exist,
DC-DC and AC-DC
.
