DaveE's latest activity
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DaveE replied to the thread Construction Water sealing a large corrugated roof - after-the-fact.Aluminum butyl flashing tape might work from below, it's very sticky. Clean the surface first, of course. It's a kludge and should be on... -
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DaveE replied to the thread Digital phase converters for running 3-phase motors.Since these transformers are linear passive networks, yes, they will work forwards and backwards. 3 phase 120 to 2 phase 90o would work...
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DaveE reacted to Averagesupernova's post in the thread Following up on the recent thread about Earth Resistance measurements with
Like.
So what happens if you connect a resistive load such as an incandescent light bulb between live and the metal chassis of some known good... -
DaveE reacted to Baluncore's post in the thread Digital phase converters for running 3-phase motors with Like.
https://en.wikipedia.org/wiki/Scott-T_transformer
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DaveE reacted to russ_watters's post in the thread Study: Social media probably can’t be fixed with Like.
Strict moderation is rare because it takes a lot of effort* and reduces user engagement. What self-respecting capitalist CEO/investor...
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DaveE reacted to Averagesupernova's post in the thread Digital phase converters for running 3-phase motors with Like.
This is what is known as open delta. Look around in small industrial neighborhoods in North America. You will see a large transformer...
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DaveE replied to the thread Digital phase converters for running 3-phase motors.The HF switching noise can be easily filtered, if they want to. In many motor drives users don't care enough to pay for that.
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DaveE reacted to Baluncore's post in the thread Digital phase converters for running 3-phase motors with Like.
A 3PH supply is just three single phase lines relative to neutral, the phase differences are 120°. The phase voltage, is the voltage...
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People routinely use the phrases "no force", "zero force", "no net force", "zero net force" interchangeably so those are, within the...
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DaveE reacted to Baluncore's post in the thread I need a concave mirror with a focal length length of 150 feet? with Like.
Why circles? If the mirrors are rectangular, lay them out in a rectangular grid. You only need to place accurately calculated shim...
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DaveE replied to the thread Multiple signals controlling relay.This sounds like a safety critical application. If so, I like the latching relay idea. You need one non-volatile memory bit that can...
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That suggests using a latching relay.
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DaveE reacted to gmax137's post in the thread I need a concave mirror with a focal length length of 150 feet? with Like.
Get a couple more quotes/estimates.
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DaveE replied to the thread Collection of Lame Jokes.It's not lame, it's real life these days. But this seems to be the active joke thread so...
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DaveE reacted to sophiecentaur's post in the thread I need a concave mirror with a focal length length of 150 feet? with Like.
As you say, a reflector would be needed and not a lens, which can work on tree stumps (low down). Burning a section of a tree would...
