Browse Resources

This video, provided by Columbia Gorge Community College, is the first part of a two part lecture that examines the two wattmeter method. The main objective of the lesson is to "examine the two wattmeter method used to measure power in 3 phase AC systems." The "advantages and disadvantages of this...

This video, provided by Columbia Gorge Community College, is the second part of a two part lecture that examines the two wattmeter method. The main objective of the lesson is to "examine the two wattmeter method used to measure power in 3 phase AC systems." The "advantages and disadvantages of this...

This slide deck accompanied a presentation given by Alan Zube of Florida State College at Jacksonville and Mike Tanner of Waukegan High School at the 2018 Hi-Tech conference in Miami, Florida. This presentation addresses the low cost manufacturing trainer that was developed by a project team with...

This lecture, published by Columbia Gorge Community College, discusses the "the analysis of balanced and unbalanced 4 wire y configurations, 3 wire y configurations, and delta configurations in 3 phase AC systems." The recording runs 16:36 minutes in length and part two is available to view...

This lecture, published by Columbia Gorge Community College, discusses the "the analysis of balanced and unbalanced 4 wire y configurations, 3 wire y configurations, and delta configurations in 3 phase AC systems." The recording runs 18:15 minutes in length and part one is available to view...

This lecture, published by Columbia Gorge Community College, shows how to "power factor correct a 3 phase AC 3 wire y configured induction motor." The recording runs 5:36 minutes in length and part two is available to view separately.

This lecture, published by Columbia Gorge Community College, shows how to "power factor correct a 3 phase AC 3 wire y configured induction motor." The recording runs 7:20 minutes in length and part one is available to view separately.

This lecture, published by Columbia Gorge Community College, demonstrates the use of "the three wattmeter, the single wattmeter, and the two wattmeter method to measure power in a balanced three wire y configured motor." The recording runs 5:47 minutes in length and part two is available to view...

This lecture, published by Columbia Gorge Community College, demonstrates the use of "the three wattmeter, the single wattmeter, and the two wattmeter method to measure power in a balanced three wire y configured motor." The recording runs 5:56 minutes in length and part one is available to view...

This paper, from Hannes Lichte of the Institute of structure Physics at Dresden University, covers the electron biprism. Lichte includes formulas and diagrams to explain electron waves, scheme of electron biprism interferometry, coherence measurements, and electron holography.