Evolution of Pent Roof Combustion Chambers
The shapes of combustion chambers of IC engines has evolved along with side and overhead valve, single and double overhead cam, into the current pent …
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Showing guides and explainers filed under Posts.
How Hall Effect Sensors Work
Hall Effect sensors are miniature SMD ICs based on CMOS technology which are able to convert fast switching magnetic fields induced over their …
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Mosquito Zapper Circuit Diagram and Theory of Operation
Mosquitoes have always remained an excruciatingly irritating pest. Bet you wish you had a way to kill them automatically. Perhaps you’d like to …
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Probability Based Structural Design Is More Economical
Uncertainties in an engineering system can be mainly attributed to ambiguity and vagueness in defining the variables and parameters of the system and …
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Cofiring Biomass in a Coal-fired Boiler
Cofiring biomass in a coal fired boiler is like a cart drawn by a horse and a mule. What are the advantages?
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Determining Rock Mass Bearing Capacity and Strength
There are a number of techniques available for estimating the bearing capacity of rock foundations. These techniques include analytical methods, …
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HMS Royal Oak and U-Boat U 47 - The Navy of the Old World Meets the New
Early in the Second World War, the German Navy, the Kriegsmarine, launched a daring raid into the anchorage of the Royal Navy’s major base at …
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How to Make a Motion Detector Alarm Circuit
The article explains a simple yet innovative circuit idea for a motion detector alarm that can be deployed in restricted places as a security device …
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Learn How to Wire a Doorbell
Looking for an easy, DIY project to try? You’ll be surprised by how easy it is to wire your own doorbell. Follow this simple tutorial.
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Merchant Marine: Alternatives to Ishihara Vision Test?
Many applicants have difficulty with one or more plates in the Ishihara sets. Some claim that the tests are not realistic and the real issue is …
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