Chapter 1
Mobile Devices
Course: 220 1201 Comptia A Exam Core 1
Subject: 220 1201 Comptia Exam Core 1
Chapter: Hardware
Overview: A power supply unit (PSU) is a critical component in a computer, converting AC power from the wall into DC power that the components of the computer can use. Selecting the correct power supply ensures that the system receives adequate and stable power for optimal performance. Understanding power input, output voltages, different PSU types, and how to choose the right wattage rating is essential for building or upgrading a computer system.
1. Input Power: 110-120 VAC vs. 220-240 VAC
- 110-120 VAC:
Features: Common in North America, Japan, and parts of Latin America. It indicates that the power supply is designed to operate with 110 to 120 volts of alternating current (AC). Use Case: Required for computers in regions using standard 110-120V wall outlets. Example: A PC in the United States is built with a power supply that operates on 110-120 VAC. Real-Life Scenario: A user moving from the United States to Europe needs to switch their power supply setting or use an adapter due to the different voltage standards.
- Features: Common in North America, Japan, and parts of Latin America. It indicates that the power supply is designed to operate with 110 to 120 volts of alternating current (AC).
- Use Case: Required for computers in regions using standard 110-120V wall outlets.
- Example: A PC in the United States is built with a power supply that operates on 110-120 VAC.
- Real-Life Scenario: A user moving from the United States to Europe needs to switch their power supply setting or use an adapter due to the different voltage standards.
- 220-240 VAC: