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Everything in your computer requires power. The power supply has leads running to the motherboard to support CPUs, PCI slots and their respective devices, USB ports and optical drives.
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A power supply does not really supply power in the sense of a reservoir, it is actually a power converter. Light bulbs and heaters use the power coming out of your wall, but there is no electronic gadget that uses power directly from the wall. The 110 volts AC (alternating polarity) power must be converted to voltage levels that the circuits are designed for, and usually at low voltage 5 or 12 volts DC (steady direct polarity). There is a huge industry that builds power supplies that do this.
A computer's power supply supplies electric power on various voltage levels to the computer's motherboard and peripheral components. Typical voltage levels used internally with PC-style computers are 12V, 5V and 3.3V DC in different rails, where some are switched off when the computer is in standby, others are only off when the computer is actually unplugged from the mains.
The power supply's job is to provide the various voltage levels in the various rails, in a sufficient quality. That is, the DC voltage must be sufficiently smooth and must vary more than the specified tolerance levels within the nominal load range. The combined power varies with the device and can range from a few tens of watts to several hundreds of watts.
Different types of computers, such as those used within tablet computers, smart phones or general embedded devices often have different power requirements.
On portable devices, power supplies often also are responsible for adapting to different power sources, such as 110V/60Hz (US) or 240V/50Hz (Europe). Other power supplies support USB connections or in-car cigarette lighter connectors for a power source, and may even have to "step up" the input voltage in order to produce the required output.
The power supply connected in a circuit helps to maintain a potential difference . Electrons move from one place to another if there is a difference in the concentration of electrons. The difference is maintained by the power supply. Because of this difference of concentration of electrons, the electrons move from a higher concentration to a lower concentration.
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What is the measure of energy consumed by a circuit?
voltage- apex :))
What is a parralell curcuit?
• In a parallel circuit, there are junctions in the circuit so the current can flow around the circuit in more than one way. • In a series circuit the current decreases as more bulbs are added. •In a parallel circuit, as more bulbs are added, the current increases. • This is because bulbs added in parallel offer less resistance
What are two things required to make electric current flow in a circuit?
you need an electrical supply and a load. nice and simple.
What is the function of circuit breakers and fuses?
Protection. They shut off the power to protect the equipment circuits, the main circuits and people.
What are three reason why a simple circuit may not work?
The circuit may not be complete. The power source may not be sufficient. The polarity of the battery is messed up.
Is a 24VDC power supply short-circuit protected?
That would depend on the power supply.
What is regulated power power supply?
is an embedded circuit or stand alone unit the function of which is to supply a stable voltage to a circuit or device that must be operated within certain power supply limits .
A device or circuit that provides power to the rest of the circuit or system is called what?
A device or circuit that provides power to the rest of the circuit or system is called a power supply,
Why is a power supply even after the power supply has been disconnected?
because the power still are in circuit of the motherboard and you have to drain the system
How is a series circuit and a parallel circuit alike?
Both take current and energy from the power supply and dissipate power.
What is the current called when it flows from and back to the power supply in a parallel circuit?
The current that flows from and back to the power supply in a parallel circuit is called branch current. Each branch in a parallel circuit has its own current flow that combines to form the total current drawn from the power supply.
What should a complete circuit have a minimum of?
a power supply (eg: battery) and a load (eg: resistor) even a piece wire shorting two terminals of the power supply is a closed circuit
Why ghost power acting on a circuit?
Ghost power may be acting on a circuit if it has a capacitor or transformer connected. This will supply power long after the input has been disconnected.
What is the function of neutral wires?
to complete the circuit and back to power supply
How does power supply failure alarm circuit works?
Power supplies don't fail. Idiot.
What is the power of a ciruit with 10 ohmns 10 volts and 2 amps?
The power of the circuit can be calculated using the formula P = I^2 * R, where I is the current and R is the resistance. In this case, the current is 2 amps and the resistance is 10 ohms. Plugging these values into the formula, the power of the circuit is 40 watts.
What is a circuit for a blender?
The Motor Power Supply Circuit - which is generally controlled by [any and many forms of] The On/Off Switch.
