Meaning of Power Source

What is Power Source:

Power supply It is a component of the computer that is responsible for transforming an alternating electrical current into a continuous electrical current, transmitting the essential and necessary electrical current to the computers for their proper functioning and protection.

Two types of power supplies are known: AT Power Supply and ATX Power Supply.

AT power source

The AT power source its acronym AT stands for Advanced Technology translated into Spanish Advanced Technology. AT power supply is also known as AT power supply, analog power supply, mechanical ignition supply, and so on.

Characteristics of the AT power supply

The AT power supply has the following characteristics:

It has a mechanical ignition, it has a switch that, when pressed, changes position and it does not return to its initial state until it is pressed again.

Some power supplies have a three-terminal connector to power the CRT monitor from the same source.

It is a saving source since it is not in “Stand by” or “Wait” because when the button is removed, the energy supply is cut off.

It is safe since when it is turned on, the electricity inside the circuits is interrupted.

These types of sources are integrated from equipment as old as the Intel 8026 microprocessor to Intel Pentium MMX processor equipment.

You may be interested:  Telegraph

AT Power Supply Colors and Wires

The AT power supply has 3 types of output connectors:

Molex and Berg type connectors are those used in peripherals that need more energy consumption, such as: hard drives, optical drives, record drives, each connector has 4 power lines. Molex and Berg type connectors are identified by the following colors: 1 red power line (5 Volts), 2 black power lines (ground), 1 yellow power line (12 Volts).

The AT type connector is the one that interconnects the AT source to the motherboard, it has 12 power lines that are distinguished by the following colors; 1 orange power line (Power Good), 4 red power lines (5 Volts), 1 yellow power line (12 Volts), 1 blue power line (-12 Volts), 1 white power lines (-5 Volts) and 4 black power lines (ground).

The correct connection of the AT source to the motherboard is through 6 power lines, which must be plugged in so that the black cables are joined in the center.

ATX power supply

The ATX power supply the acronym ATX stands for Advanced Technology Extended. The ATX power supply is the second generation of power supplies, it is the current power supply that replaces the AT power supply. The ATX power supply is known as ATX power supply, digital power supply, digital power supply, among other names. The ATX power supply was created by Intel in 1995 in order to optimize peripheral input and output and reduce system cost.

ATX power supply features

The ATX power supply has the following characteristics:

It is digital ignition, it has a push button instead of a switch.

You may be interested:  Microprocessor

Some power supplies have a rear mechanical switch to prevent the sleep state during which it consumes minimal and unnecessary amounts of electrical power.

The shutdown of the ATX power supply can be operated from the software.

These types of sources are integrated from computers with an Intel Premium MMX microprocessor to computers with the most modern microprocessors.

ATX Power Supply Colors and Cables

The ATX power supply contains 6 types of output connectors:

The ATX power supply features the same Molex and Berg type connectors as the AT power supply.

The SATA /SATA 2 connector is that connector used in hard drive devices has 15 power lines and are identified as follows; 3 power lines V33 (3.3 Volts), 3 power lines V5 (5 Volts), 3 power lines V12 (12 Volts), 4 power lines GND (ground), 1 reserved line (reserved).

The ATX connector is the one that interconnects the ATX source to the motherboard, it has 24 power lines made up of the following colors; 4 orange power lines (3.3 Volts), 8 black power lines (Ground), 6 red power lines (5 Volts), 1 gray power line (Power Good), 1 purple power line (5 VSB), 2 yellow power lines (12 Volts), 1 blue power line (-12 Volts), 1 green power line (Power On), 1 white power supply (-5 Volts).

The 4-pin processor connector is the one that powers modern processors, it has 2 black power lines (ground) and 2 yellow power lines (12 Volts).

The PCIe connector, connector of 6 and 8 terminals, is intended to power the PCIe type video card, it has 4 black power lines (ground) and 4 yellow lines (12 Volts).

You may be interested:  Meaning of Office Automation

The ATX power supply allows a single way of connection avoiding errors as it happened in the AT power supply.

Operation of AT and ATX power supplies

The process of converting alternating current into direct current through AT and ATX power supplies comprises 4 stages:

Transformation: The commercial power line voltage is reduced from 127 Volts to 12 Volts or 5 Volts by the use of electronic element called step-down coils.

Rectification: The alternating current voltage is transformed into direct current voltage, letting only the positive values ​​of the wave pass through the electronic element called diodes.

Filtered out: It softens the voltage and quality to direct current through electronic elements called capacitors.

Stabilization: The smoothed voltage is shaped into a linear one by the use of the distinguished electronic element as an integrated circuit. In this stage, the necessary energy is supplied to the computers.