Practical Electronics & Circuits 101 – Regulators & Power Supplies

The 9th video in the series Practical Electronics & Circuits 101, where I explain the basics of the theory behind circuits with a focus on using this knowledge for actual projects. In this episode we go over voltage regulators, power supplies, and how to use them.
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Products mentioned in the video:
Bench power supplies:

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Chapters:
00:00 Intro
01:12 Why regulators are necessary
03:45 More about integrated circuits (ICs)
05:19 Linear Regulators
11:00 Switching Regulators
15:55 Power Supplies
19:35 Bench power supplies and how to use one
23:25 Outro

[PhazerTech]

A few more words about power requirements when using regulators. Make sure the power supply you're using can provide enough power to the regulator. Let's say you have a 5V regulator and a 9V power supply and you need the regulator to provide 1.5 amps. The power used by the regulator is 5 V x 1.5 A = 7.5 W
But the regulator isn't 100% efficient. Let's say this particular one is 85% efficient, so about 15% of the total power is wasted. Solve this equation to find total power used: 85 / 100 = 7.5 W / x
Solving for x = 8.82 W roughly
This means the power supply must provide at least 8.82 W. To give room for error let's round up to 9 W. Since the power supply is 9V, it would need to provide at least 1A in this example. To be extra safe you might want it to be at least 1.5 A.

[louderlouder]

really enjoy your vids brother.
EXCELLENT info I use.