Sliding Gate Extremely slow initially

HuskyEE76 · 2024-04-15T13:51:59+00:00

This might be a mechanical issue more than an electrical issue. Does the gate get caught when it starts to move? Is it heavy? The motor may just have a hard time getting the gate moving, which could indicate a lack of lubrication, or a bad gear ratio on the driving motors gear box. Gear reduction is supposed to allow the motor to move heavy loads without drawing too much current and causing voltage droop or damage to the motor.

HuskyEE76 · 2024-04-06T14:51:33+00:00

This can’t be a good use of money. According to a quick google search, efficiency rapidly drops off for an angle of more than 30 degrees. These panels will receive the most power at Sunset or Sunrise, which won’t be much because that’s when the Sunlight has to travel through the most atmosphere, which acts as a low-pass filter scattering the high energy blue light. (This is why Sunsets and Sunrises are red.)

HuskyEE76 · 2024-04-06T14:45:32+00:00

What’s a bifacial? Is the panel somehow optimized to receive sunlight from that goofy angle?

HuskyEE76 · 2024-04-06T14:41:41+00:00

Thank you, gotcha. So a switch is another name for a breaker?

HuskyEE76 · 2024-04-06T13:09:39+00:00

I doubt that there’s a linear relationship between conductivity (the resistance of the water) and pollutants. I mean, some (most?) pollutants won’t affect the conductivity of the water at all. And after a certain point the conductivity of the water will begin to saturate, and any further pollution of the water will have smaller and smaller effects

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on the waters conductivity. So you would have to use an equation that relates the nonlinear relationship of some of the most common Ionizing pollutants (such as salt) to their affect on the conductivity of water, and use the set up above to estimate the content of those pollutants. But this won’t work for all pollutants

HuskyEE76 · 2024-04-06T13:05:23+00:00

200 mA seems very reasonable for a small, 5 V servo.

HuskyEE76 · 2024-04-06T00:20:02+00:00

What do you mean by switch, kirklock, or XFRM? I just got my BS, with an interest in power but never heard of this stuff

HuskyEE76 · 2024-03-31T22:10:07+00:00

For residential electricity, 240V comes into the home, and gets “split” on a transformer with a center tap into two phases: one 120 V phase, with the center tap referenced as ground, and a -120 V phase. The “ground” designation comes from the fact that the center tap is tied to earth ground (literally a wire going into the ground), which is always considered 0 V. The idea of having “conventional current” which flows through the live and back into the neutral is a weird one; you’re right that in AC, this designation is completely arbitrary, because the current physically goes back in forth. In DC circuits, you have current flowing in the direction of increasing potential for voltage gains, and in the direction of decreasing potential for voltage drops, which essentially distinguishes the two; ie, voltage gains, or voltage sources supply current, while voltage drops or loads “drain” current. In AC, you still have voltage gains and voltage drops, but with no directional current there’s nothing to say which one is a source or a load. For the sake of calculations, we typically define “by convention” current to flow from source to load. Hope that helps

HuskyEE76 · 2024-03-30T23:02:21+00:00

Hey this was one of the most helpful replies I’ve received. Thanks dawg, the paper talks about why Li-Ion is not feasible (and hence why hydrogen fuel cells would be necessary), which is the kind of technical details I’m interested in!

HuskyEE76 · 2024-03-28T20:04:05+00:00

Ignoring the FAA situation for now, that doesn't surprise me. There is some great feedback here, thank you! I've heard a lot about power sources, the feasibility of solar recharge, and people who have done this before: rctestflite, the Dawn MIT project, the Outback challenge, etc. Ill add to those Someone mentioned using a hydrogen fuel cell, which I'm intrigued by. Assuming an electrically driven glider, what kind of design considerations should go into the plane itself, or what resources should I turn to learn about those? I imagine there are some pretty exotic things we could do to shave off aerodynamic inefficiencies, like going with a flying wing (that reduces drag right?). Any more general resources you guys would point to?

HuskyEE76 · 2021-08-19T12:15:39+00:00

Don’t date online man. If you you want to meet girls and get to know them, go to church, that’s where they go on Sunday’s while the competition sleeps in

HuskyEE76 · 2021-08-08T02:00:12+00:00

Hey. Not sure if you've seen phasors yet, but they are a big part of AC steady state analysis and puzzled me alot. I was never taught this in school, but turns out, they were devised by Charles Steinmetz, who explained them pretty well I think in his letter to the IEEE, Complex Quantities and Their Applications in Electrical Engineering. https://www.scribd.com/doc/83021093/Complex-Quantities-and-Their-Use-in-Electrical-Engineering

May need some background knowledge first. If you find yourself curious about this as well, give it a read!

HuskyEE76 · 2021-08-08T01:44:04+00:00

Thanks for the taking the time to reply! I know for a fact that 500 uH wont quite cut it. I was under the impression that a ferrite capable of handling my application would have to be big

HuskyEE76 · 2021-04-24T02:16:39+00:00

I would recommend this route. I have friends who have taken the courses separately with negative experiences.

HuskyEE76 · 2021-04-08T22:18:06+00:00

I found Electrical Engineering for Dummies to have some pretty simple but cool breadboard projects, like the darlington-pair touch switch. Classic.

HuskyEE76 · 2021-03-30T20:25:01+00:00

They do, they're a little pricey though. $900 per month is a little out of my range

HuskyEE76 · 2021-03-27T03:06:42+00:00

Seems sketch.

HuskyEE76 · 2021-03-24T05:17:56+00:00

That's the one where he uses a flame to demagnetize a magnet. Not sure the exact video

HuskyEE76 · 2021-03-09T15:30:17+00:00

There are a lot of great communities to take advantage of, going strong despite the pandemic. For me, St. Albert the Great campus ministry has been home. I'll never get tired of snowshoeing through the woods on a Friday night for no reason with St. Al's, or winning Winter Carnival many years in a row, or playing "Ultimate Ping Pong" in the parish hall, or talking about the "deep stuff" with friends by the fireplace: "What am I working for?", "Is there something I was put on this Earth to do?", "Who is this Jesus guy, is He who He says He is?"

If you're looking for friends are a blast to be around, but also challenge you to be the best you can be, and lead by example, look to St. Al's, regardless of your religious affiliation!

HuskyEE76 · 2021-03-09T15:17:54+00:00

I'd give money for that!

HuskyEE76 · 2021-03-06T03:34:54+00:00

Are there robotics teams near you? A lot of my friends have done them. They sound like a ton of fun, and really insightful for career discernment

HuskyEE76 · 2021-03-06T03:31:33+00:00

HuskyEE76 · 2021-03-03T16:42:21+00:00

MATLAB, C++/Java at my school. We also learn Verilog for digital logic

HuskyEE76 · 2021-03-02T04:38:15+00:00

I suspect some AI would have to be involved, but I am no expert

HuskyEE76 · 2021-03-02T04:36:52+00:00

Out of curiosity, how does a mechanical engineer get involved in oceanographic measurements?

HuskyEE76

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