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02/19/2025
posted in General Discussion
by Nigh
We have a situation where we want to buy a small arbour press but we want to use it in conjunction with an inductive coil to heat a susceptor as part...
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02/11/2025
posted in Electrical Engineering
by Anonymous Poster
What are the methods for detecting earth faults in rotor windings without using slip rings? This is for diesel generators with a capacity of 3 to 5 MV...
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02/09/2025
posted in General Discussion
by HiTekRedNek
I think now would be a good time to broadcast grass seed over the burnt areas to help bind the soil together. Use a creeping grass like centipede, tha...
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02/08/2025
posted in General Discussion
by yesyen
A popular school experiment, in laboratory pair tuning forks could produce waves that would resonate and crack a lab glass jar.
On the same line, can...
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02/07/2025
posted in General Discussion
by HiTekRedNek
A spark can be guided by ultrasonic beam.
Check out this link.
Many possible uses for this. Lightning protection and guidance, redirecting lightning...
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02/07/2025
posted in General Discussion
by Randall
When I put up the Christmas lights in December, I needed to get power outside, and I did something which is almost certainly not recommended:-
Stri...
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02/06/2025
posted in Electrical Engineering
by nvmani
During transient voltage surges, severe voltage fluctuations in the electrical supply lines/system, the electronic devices provided in the house often...
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02/03/2025
posted in General Discussion
by HiTekRedNek
Birds have a unique respiratory system, much more efficient than mammals.
Similar to a 2stroke engine vs a 4 stroke engine.
Amazing!
Check this out...
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02/02/2025
posted in General Discussion
by SolarEagle
The difference between Pressure Altitude,True altitude and Absolute Altitude, let's make sure we're on the same page...
..."Constantly changing, abso...
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01/30/2025
posted in Electrical Engineering
by orlyboy
We have an ongoing study of LV cable which is installed 25 years ago and still functioning as intended. The cable/s is/are supplying motor/s via VFDs....
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01/29/2025
posted in Electrical Engineering
by Labyguy
My wife has been bugging me for years about finding a cheap way to heat our in ground pool. I acquired a 340W solar panel, and was thinking that might...
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01/28/2025
posted in General Discussion
by HiTekRedNek
Will a VFD work on a standard heat pump compressor without damaging the compressor or other components?
This will be used only for the compressor, no...
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News for 02/17/2025
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01/31/2025
posted in Challenge Questions
A square snow fort contains 40 children.There are 3 defensive positions along each fort wall (8 total).
They have vowed to defend their fort against...
01/31/2025
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12/31/2024
posted in Challenge Questions
The following riddle comes by Edouard Lucas, a 19th century French mathematician, who conceived other puzzles and [checks notes] died after a waiter d...
12/31/2024
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11/30/2024
posted in Challenge Questions
A man phoned his wife and asked her to pick up some groceries. He told her that she could find an envelope on his desk with cash for the purchase. Thi...
11/30/2024
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