Table of Contents
The power supply takes wall current (120-volt, 60-Hz AC) and converts it to an appropriate level of DC voltage for the various components in a PC. Depending on the component, this can be +3.3V, +5V, or +12V.
What are the 3 voltages supplied by the power supply?
The typical voltages supplied are: 3.3 volts. 5 volts. 12 volts.
What voltages do power supplies provide?
Power supply voltages can be as low as 3 V (single rail), especially for use in battery-operated equipment, and up to ±24 V (−24 V, 0 V, +24 V) with output currents up to 300 mA. The input resistance can be extremely high, for certain instrumentation applications.
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.
What is 3.3 volts used for?
Positive DC Voltages Usually, the digital electronic components and circuits in the system (motherboard, adapter cards, and disk drive logic boards) use the +3.3v or +5v power, and the motors (disk drive motors and any fans) use the +12v power. Table 3.1 lists these devices and their power consumptions.
What are the types of DC voltage usually produced by a power supply?
DC power supplies have four basic outputs: constant voltage, constant current, voltage limit, and current limit.
What voltages are provided by an ATX power supply?
In 2019 Intel released a new standard based on an all 12V design, ATX12VO power supply only provides 12 V voltage output, 5 V, 3.3 V powers, as needed by USB, hard disk drive and other devices, are transformed on the motherboard, ATX motherboard connector is reduced from 24-pin to 10-pin.
What are the 4 stages of power supply?
Power Supplies 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 is the difference between 115V and 230V?
A 115-volt air conditioner plugs into virtually any standard household outlet. A 230-volt air conditioner uses a specialized outlet, much like the type that a clothes dryer uses.
Should I use 115V or 230V?
In the United States, Alternating Current (AC Power) is provided in the 120V range. So if you are in the USA, you would use the 115V switch position. Europe and other countries use the 230V range so if you took your computer to one of those location you would have to switch to the 230V setting.
How can I tell what wattage my power supply is?
Look at the exposed faces of the power supply unit for a sticker or label that describes the unit’s electrical capacities. This label is required to be placed on all ATX form factor computer power supplies. It will designate how many amps are available for each voltage type and give a “watts max” designation.
What are the basic types of power supplies?
There are three subsets of regulated power supplies: linear, switched, and battery-based. Of the three basic regulated power supply designs, linear is the least complicated system, but switched and battery power have their advantages.
What are examples of power supply?
Two types of power supplies exist, DC-DC and AC-DC. DC-DC power supplies allow you to plug in electrical devices into car outlets or similar sources that supply direct current, or DC, power. These power supplies are not the most commonly used, though.
How do you make a 5V power supply?
Step by step method to design 5V DC power supply Step 1: The selection of regulator IC. Step 2: The selection of transformer. Step 3: The selection of diodes for the bridge. Step 4: The Selection of smoothing capacitor and calculations. Step 5: Making the power supply safe.
What uses 5V power supply?
A 5V output is most commonly used when the end application needs powering via a USB connector, for example a mini/micro B or Type-C plug. Or, if space is at a premium, the DC cable and USB plug can be removed altogether and replaced with a female socket on the case like on phone chargers.
What is 5V used for?
5V is now used mostly for 5V interface chips that communicate with USB, parallel IDE drives (PATA), mouse, keyboard, and 5V PCI devices.
Why is 5V used in electronics?
It was designed to use 5 volts because that provided the best combination of noise immunity, power consumption and speed with the existing technology. Naturally, connecting circuits such as sensors and other devices tried to use the same voltage to avoid the need for extra power supplies.
How are DC circuits supplied with power?
In general at the input of the power supply there is a power transformer. It is followed by a rectifier (a diode circuit)a smoothing filter and then by a voltage regulator circuit. The output of the dc power supply is used to provide a constant dc voltage across the load.
What is a DC power supply?
A DC-DC power supply converts direct current coming from the power source (a battery) from one voltage level to another depending on the point-in-time needs of the device being supplied. Just like with AC power supplies, DC-DC power supplies may use regulators to smooth out the signal and eliminate ripple voltage.
What are the main components of the DC power supply?
However, the main components of system are typically a charger / rectifier, batteries and distribution. The type of enclosure can also vary greatly based on application.
