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Trying to Identify and Source Window Parts

06/21/2024
posted in General Discussion
by BruceFlorida
Views: 76, Comments: 10
Last comment 06/24/2024 by BruceFlorida
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Unable to Post to CR4 with Pictures

06/21/2024
posted in General Discussion
by BruceFlorida
I can't post anything with pictures. Both browsing for a low resolution image file and clipboard copying a low resolution image yield the message incl...
Views: 58, Comments: 21
Last comment 06/24/2024 by PWSlack
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Is "OFF" Really "OFF"?

06/18/2024
posted in General Discussion
by HiTekRedNek
When you turn your computer off, it is really off? I know there are background keep alive circuits, but how do you know what they are doing besides w...
Views: 223, Comments: 7
Last comment 06/24/2024 by PWSlack
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BIL Rating for a Motor

06/15/2024
posted in Electrical Engineering
by Anonymous Poster
Sorry for this stupid question, Transformers have a BIL (Basic Impulse Level) rating, so why don't motors have one?
Views: 166, Comments: 5
Last comment 06/17/2024 by rwilliams
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Live/Neutral of Home-Built Transformer

06/14/2024
posted in Electrical Engineering
by avicenna
I have no experience in practical electrical circuit. Say I have built my experimental step-down transformer(ferrite core) 9VAC to 6VAC to power a 6V...
Views: 202, Comments: 32
Last comment 06/24/2024 by vsar
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Are Space and Time Inseparable?

06/12/2024
posted in General Discussion
by hitekrednek2
I had a dream last night.If space and time are in fact inseparable,then to travel back in time you can (simply )? travel back in space.Every instant o...
Views: 215, Comments: 12
Last comment 06/24/2024 by PWSlack
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MNSPTOC Negative Phase Sequence Overcurrent Protection

06/10/2024
posted in Electrical Engineering
by NKA
My question: For REM 630 or REM615 Motor protection relay, Negative phase sequence protection i.e. MNSPTOC (ANSI/IEEE C37.2 device number 46) should...
Views: 50, Comments: 3
Last comment 06/10/2024 by raghun
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Light Driven Water Evaporation

06/09/2024
posted in General Discussion
by Rixter
Here is something interesting - water evaporation driven by green laser light, requiring energy less than thermal evaporation. https://www.youtube....
Views: 264, Comments: 14
Last comment 06/14/2024 by Rixter
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Can Aluminum Shield Magnetic Fields?

06/07/2024
posted in Electrical Engineering
by avicenna
Say I have built a simple working 9V/9V AC 50 Hz transformer. It has two copper coils 50 turns each at each end of a soft iron rod. It is able to ligh...
Views: 251, Comments: 9
Last comment 06/11/2024 by lyn
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Optimizing Overcurrent Protection for a 4200 kW Slip Ring Induction Motor

06/04/2024
posted in Electrical Engineering
by Aghvel Niazi
The optimization of overcurrent protection for a 4200 kW wound induction motor, which drives a raw mill in a cement plant, is under review. The motor...
Views: 95, Comments: 4
Last comment 06/10/2024 by raghun
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MV/LV Transformer Winding Configuration

06/03/2024
posted in Electrical Engineering
by Anonymous Poster
The decision has been made to operate the low voltage system ungrounded. The low voltage system receives power from the MV/LV transformer, and the MV...
Views: 99, Comments: 6
Last comment 06/04/2024 by rwilliams
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Measuring High Voltage AC

06/01/2024
posted in Electrical Engineering
by Manfred2
I have an analogue 30kV ac panel meter. I want to measure up to 12kV AC voltage with it. Do I need to use a voltage divider as the same for DC? If so...
Views: 178, Comments: 20
Last comment 06/09/2024 by HiTekRedNek
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Can You Spell 'Inglenook'? (June 2024 Challenge Question)

05/31/2024 posted in Challenge Questions
This month's challenge question comes from the world of railroading. Inglenook siding puzzles are a unique way to create combinations of train consist...
05/31/2024 Views: 423, Comments: 5
Last comment 06/12/2024 by Randall
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"We Got A Great Big Convoy" (May 2024 Challenge Question)

04/30/2024 posted in Challenge Questions
You own a trucking company with a fleet of trucks. You need to deliver one pallet of feather pillows. The delivery destination is 270 miles away. The...
04/30/2024 Views: 655, Comments: 22
Last comment 05/28/2024 by Anonymous Poster
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