About this Course
Uninterruptible power supplies (UPS) provide backup power on loss of main power to a system. The UPS is sometimes called a switching power supply and differs from a backup system, such as a diesel, in that it provides instantaneous switchover on loss of power. The principles of operation are the same whether backing up a desktop computer or a large power system.
By the end of this course, you will be able to:
- Describe the operation of the power switching circuit
- Explain the basic operation of a rectifier circuit
- Explain the operation of the battery charger circuit
What You Get
Certificate of completion
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Content is updated and current
- Rectifier Circuits
- Power Supply Filters
- Voltage Regulators
When Does My Course Expire?
Your course will expire one (1) year after you purchase it (the date you submit payment), unless the course itself indicates otherwise.
How Quickly Will I Get My Certificate of Completion?
Once you finish your course and pass any required exams, you can print your certificate of completion right away.
What Can I Do If I Lose My Certificate?
If you lose your certificate of completion and need a new one, you can contact customer service at (877) 881-2235 or firstname.lastname@example.org.
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If for some reason you are not happy and would like a refund, send us a request within 72 hours of purchase. Here are the eligibility requirements you must meet:
- Your purchase was made no more than 72 hours prior to your refund request.
- You have NOT
- Attempted any portion of a test or exam.
- Requested or been issued a certificate of completion.
- Completed 50% or more of the purchased course.
If you meet all of these criteria, submit your refund request in writing via email to email@example.com with a proof-of-purchase receipt and an explanation for why you are requesting a refund.
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