Latest threads in ⏚ Electrical Engineeringshow only best voted threads
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URGENT Test for alternating current without multmeter
I have a lenovo n22 laptop. I am posting this message on it. I was watching i a youtube video when I realized that the ac/dc adapter was unplugged, whe n I plugged it back in, my laptop made a...
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5 years ago
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off topic cross post
an off topic cross post If you think you got it then either use it or lose it. don't expect it like it's your birthright. reiterating: 'use it or lose it' especially in the w ay your forefathers were...
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6 years ago
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I like this ... that's all
Simon Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!
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6 years ago
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Door Bell Buzzer "tap"
For a remote (from chime) but "near" transformer for door bell power. Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a...
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6 years ago
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Laser question
45 years ago I was in a bar in Chicago and they had a laser deal that plotted the 2 channels of the sound system as a Lissajous pattern on the back wall. I tried to make one using an old Neon laser...
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6 years ago
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Hashing Out These Problems.
We used to get down like Madmen ? Best Wishes for A Safe, Productive & Safe Holiday Season To You All & All. R.Q.T.
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6 years ago
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EMC - RF IMMUNITY
Hello everyone. 1.) I have an electronics board that has 10 wires coming out that gets conn ected to an end users board with an Ethernet type cable. During our Elect romagnetic Compatibility (EMC)...
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6 years ago
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T-shaped US outlet?
I have an old (1940s I think) ceramic outlet in a box, for a two prong plug, no ground. It accepts a standard US 2 prong (1-15) plug. It is polarized. It is also marked "15A 125V" (molded in the...
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6 years ago
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Electric Motor for Animated Store Display
Hello, all, and perhaps a question for the "seniors" in the ng: Back in the 1950s-1960s era one often encountered countertop (or larger) cardboard product displays that were animated by a simple...
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6 years ago
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Medium Voltage Cable Market Trends, Business Strategies and Opportunities with Key Players Analysis
Request a Sample Report at 0000470 Electricity conducting cables ranging from 2,000 V to 35,000 V is termed as medium voltage cables. These cables are generally used in mobile substatio n equipment...
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6 years ago
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Best wishes and Good luck in your first year.
Crib notes or Cheat sheets. "Trigonometry" e^(iwt) = cos(wt) + isin(wt) i^2 = -1 and +i = squareroot(-1). -> 2(i)sin(wt) = [e^(iwt) - e^(-iwt)]. -> 2cos(wt) = [e^(iwt) + e^(-iwt)]. -> 2sinh(wt) =...
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6 years ago
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The rating of an EHV transmission line
When an EHV transmission line (let's say 345 kV or 400 kV, for example) is rated at 1,000 MW, is this 1,000 MW:- a. the rating which should not be exceeded in normal service, with the aim of...
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6 years ago
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GFCI's: Upstream protection Also ?
Hello, Concerning the normal GFCI protectors/modules: Obviously they protect "downstream" like they are designed to. But does this protection also extend "upstream" ? If so, to where ? Thanks, Bob
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6 years ago
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Single phase ind. motor with external inductor
To the person who replied: Thank you. I finally found my way into your reference. However, the resistance split phase motor does not seem to explain the motor I have. In the book there is no external...
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6 years ago
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Boy Scouts electrocuted in deadly Texas boating accident
Hello, and your story, while tragic, isn't anything new. There's a number of instances over the decades where a metallic conductor (antenna mast, etc) from a ground vehicle came into contact with an...
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6 years ago
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