Tag: voltage

A+ Pop Quiz: Choo-choo

A+ Pop Quiz: Choo-choo

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A+ Pop Quiz: It costs a lot to keep this phone charged

A+ Pop Quiz: It costs a lot to keep this phone charged

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Power Specifications – CompTIA A+ 220-901 – 1.8

Power Specifications – CompTIA A+ 220-901 – 1.8

Last modified on May 31st, 2018 at 1:16 pm

Computer power systems have their own language and architecture. In this video, you’ll learn about amps, volts, power calculations, current, voltage, power supply sizing, power supply options, and much more.

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Don’t touch it with your tongue

Don’t touch it with your tongue

Last modified on August 12th, 2012 at 11:57 pm

Which of these would be the best way to measure the voltage of a motherboard power rail with a multimeter? A) Set the multimeter to AC and check the voltage at the wall power source B) Set the multimeter for DC, place one probe on a ground pin and the other on the voltage pin […]

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CompTIA Network+ N10-005: 4.2 – Multimeters

CompTIA Network+ N10-005: 4.2 – Multimeters

Every tech should have a good multimeter in their toolbox. In this video, you’ll learn how multimeters can help you resolve cabling issues in your environment.

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CompTIA A+ 220-701: 1.3 – Computer Power

CompTIA A+ 220-701: 1.3 – Computer Power

Last modified on October 7th, 2019 at 1:58 pm

Without the supply of power, your computer won’t have much to do. In this video, you’ll learn about power supply standards and how different connectors are used to power the components inside of modern personal computers.

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What voltage is this?

What voltage is this?

Last modified on August 13th, 2012 at 3:10 pm

You are installing a new computer at a remote office in another country. What’s the best way to determine the voltage of the wall outlet power source and how can you configure the computer for best results?

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Troubleshooting Power Problems

Troubleshooting Power Problems

Last modified on August 13th, 2012 at 3:49 pm

You’re having a problem that you think is related to power. You’re not sure if the problem is related to the voltage from the wall receptacle or if it’s an issue with your computer’s power supply. What tool would help you troubleshoot this issue?

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What tool can diagnose power connections?

What tool can diagnose power connections?

Last modified on August 13th, 2012 at 5:25 pm

One of the computers in your lab is having problems with power, and you suspect that the issue is related to the voltage provided at the power outlet. What tool can help you diagnose the exact voltage at the outlet and inside the computer?

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CompTIA Network+ N10-004: 5.3 – Hardware Tools

CompTIA Network+ N10-004: 5.3 – Hardware Tools

Last modified on July 24th, 2011 at 5:19 pm

If you’re managing a network, you’ll need a comprehensive toolkit to keep things running at peak efficiency. In this video, you’ll learn about the tools that will make your life a much better place. We’ll discuss cable testers and certifiers, TDRs, multimeters, punch-down tools, voltage event recorders, and much more.

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