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Home
Electrical
Controls
HVACR
Mechanical
Energy
Merch Shop
Area of a Trapezium
Paul Evans
-
Jun 21, 2015
0
Area of a Parallelogram
Paul Evans
-
Jun 21, 2015
0
Refrigeration cycle, essential knowledge.
Paul Evans
-
Jun 7, 2015
9
Density explained!
Paul Evans
-
May 18, 2015
12
Density of Metals
Paul Evans
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May 18, 2015
8
Arc length, how to calculate
Paul Evans
-
May 13, 2015
4
Circumference of a circle
Paul Evans
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May 11, 2015
2
Area of an octagon
Paul Evans
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May 10, 2015
0
Volume flow rate explained (m3/s)
Paul Evans
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May 4, 2015
6
Building services engineering intro
Paul Evans
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May 3, 2015
6
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Design and Build a PCB- SMD Circuit Board Design
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Chiller Compressor Types
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How Transformers Work
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Solar Panels Explained
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Industrial Refrigeration Basics
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Latest Content
Why This Circuit Works When It Shouldn’t
Paul Evans
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Jan 12, 2026
0
In this article we explain how a simple Joule Thief circuit boosts low voltage using inductors, transistors, and Faraday’s law. Learn how it works,...
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