Recent content by DaveE

Yes. They control the power flow by matching (leading slightly) the phase of the grid. So they are always sensing it, If their frequency requirement shifts out of range, they shut down. Some will actively probe the grid by introducing a small frequency variation and monitoring how the current...

The inverters disconnect if the grid goes down. Just like conventional roof top solar. In California, you aren't allowed to DIY these things, they must meet regulatory requirements.

But is ammonia carbon free or renewable? Doesn't it nearly all come from the Haber-Bosch process and hydrocarbons? So, what is the advantage?

Yes. Sort of. Field descriptions can get complicated. I would stick with the voltage (potential) for now. The current would be determined by the entire loop circuit, so wires plus the devices (LEDs) that the current has to flow through. Khan academy has some really good tutorials on...

This? https://en.wikipedia.org/wiki/At_the_Abyss

If your sw is updating the step motor position frequently (not necessarily moving it, if that's not needed) and the step size is small, I think you can use an analog DC motor as a good low frequency model. Otherwise you'll have to enter the world of digital control with z-transforms and such...

If y'all do Facebook, you might like this group. Pictures of dissected devices and such. https://www.facebook.com/ElectronicsPictures

More likely corporate R&D or Academic source. Back in the day when hardware wasn't all IC's there were lots of machine shops that would make one-off experimental stuff like this. They knew what it was and had documentation, but you'd never see it.

Odd that it's well sealed at the ends but has big slots cut in the side. It must have connected to some other sealed equipment.

Still born?

polychromatic polarizing microscopy is a bit more complex than conventional polarization microscopy (the one with crossed polarizers and a waveplate). In PPM, instead of a simple polarizer in front of the illumination they construct a different polarization state for each wavelength for the...

## A \overline B ## is as good as you will get IMO. You might also have to test for ## \overline A B ## to exclude the ## \overline {AB} ## and ## AB ## states. Which binary result do you want? You might look up Karnaugh maps for this sort of question.

Yep. Ask anyone that's ever done a PCB layout for a SMPS or high speed digital if the schematic tells the whole story. YouTube creators and even physicists might do better if they could just admit that they haven't studied or worked as an EE IRL.

I'm reminded of a favorite quote from, maybe, the best analog EE prof ever: "Engineering is the art of approximation" - R.D. Middlebrook Our task is to build models that are just good enough, not perfect. Good enough to aid our understanding and answer our questions without too much effort...

Interference is just a consequence of vector addition. You'll also see it in water waves in a harbor. Lots of things are well modeled mathematically as vectors. It sounds to me like you are seeking profundity in basic math.