arcrust

I love my oneplus 11. It's my first oneplus and I highly recommend it.

However, I speed using it this week and went back to my xperia V ii because YouTube music and android auto won't stay connected while driving. It's only with the oneplus 11. Hopefully they fix it, but it makes my daily commute hell.

Transformers raise or lower voltage of ac circuits. They also do the opposite to current, e.g. Raise voltage, lower current.

The rectifier makes all the voltage positive (or negative, but all the same). So yes, AC -> DC

The filter basically uses inductors and capacitors to act as storage. Using capacitor as an example, it'll start charging when the wave starts to rise. once the wave goes down, the capacitor discharges which keeps the output more positive. You can see that in the image by full humps before and partial humps after. It's still bumpy, but it never goes to zero.

The regulator can do a couple of things, mostly it's used to ensure a constant output. In it's most basic, it'll be another diode that if voltage goes above a certain threshold, it shunts it away from the load. So if the output of the filter had a minimum of 5 volts and the regulator was set to 5, you'll end up with a constant positive 5 volts because the diode is shunting away all the extra voltage.

Regulators can provide both over and under voltage protection in case there is fluctuations in the circuit.

Kind of. You're on the right track.

What you're missing is that there is a loop. Imagine a resistor being connected to negative and positive of the load. Since it's about relative voltages not absolutes, d1 and d3 both conduct. A positive on the triangle, or a negative on the bar will make them conduct. For electricity to flow you must have a loop from source to load and back to source. So current would flow from the source through d1 through the load through d3 and back to the source.

Hope that makes more sense.

You could remove d1/d4 OR d2/d3 and you'll have a half wave rectifier, so you'll get every other peak.

"DC or direct current is instead just a constant horizontal line."

Your explanation is totally correct. (I replied as well just to break it down a little further for OP). I know I'm being a little pedantic, but DC does not have to be constant. DC can also pulse and change. The main difference is whether or not the signal remains positive. If it goes negative, then it is AC. The change in polarity is what matters, not how constant it is.

Think about the circuit over time. The sine wave on the left is the input.

When the sine wave is positive, the top wire is positive and the bottom wire is negative. That means d1 and d3 are both positive and d2 and d4 are both negative.

Diodes "forward bias", meaning they allow electricity to flow, when you have a positive on the triangle side. This also implies a negative on the straight bar side. If the positive is on the straight bar side, then it won't conduct. You have to have a negative on the straight bar side.

Note: Keep in mind positive and negative means in relation to each value. So if one side is 5 volts, and the other is 0, then the other side is negative compared to the positive side.

So with that in mind, when the sine wave is positive, greater than 1,then d1 and d4 are conducting (there an implied loop on the left side).

When the sine wave is negative, then d2 and d3 are conducting. Because these two diodes are flipped, the high value goes to the top wire on the output which is now seen as a positive. The input is different, but because you've flipped the wires, the output is still the same. Now all current flows in one direction no matter the input. AC is now DC.

Shorter verison: positive side of the sine wave makes d1 and d4 conduct. Negative side makes d2 and d3 conduct. Since d2 and d3 cross over, they effectively turn the negative into a positive value.

Unless there is a transformer. Also, it may just catch fire depending on the input voltage

So I'm a technician at a research lab. 8/10

The benefits are absolutely amazing. We do a lot of government work and have one of the highest budgets, so very good job security.

The work does get pretty technical, but it's all OJT. And they give plenty of time to get qualified. The work is a lot of setting up expirements for scientists. Lot of mechanical installations and a hefty amount of computer operations for gas operations and cryogenics.

We work 24/7 (the lab). I work 13 hour shifts 3/4 days a week. One week is 3, the next is 4,the next is 3. Rinse and repeat. So i get a 3 or 4 day weekend every week. That's absolutely beautiful to me.

My main complaint is that we don't have enough work to actually fill 24 hours a day. I work the night shift, so I have quite a bit of down time. I don't like downtime personally. If I'm gonna sit and watch YouTube, I'd much rather be in the comfort of my home. But I'm hourly, so I can't leave. For some people, that's the fucking jackpot, but I like staying busy.

Im prior military so it's very nice seeing how much they care about making our jobs easier. There's schedule pressure, but management does an extremely good job about not letting that trickle down. So i never feel rushed to get stuff done. It's lots hours but fairly stress free.

Nah. I think it's totally fine. Definitely NTA. It sounds like your friend is intelligent and enjoys sharing his skills and knowledge. If he doesn't ask for anything in return, it's fine. I'm a technician who works with a lot of people who have doctorates, and they absolutely love to help with anything and everything. I've learned so much by just listening and asking questions and they enjoy showing off. Of course, not everyone is like that, but in my experience, most are.

But you should try to do something nice for him as well. It can't hurt. Bring him some donuts or a coffee. Make sure he knows you appreciate everything he does for you. Make sure he knows that if there is anything you can do for him, that he should ask. Talk to him. At least that way it'll clear your conscience.

But you don't need to do anything. Just like you don't have to donate to Lemmy. Some people just want to put good out into the universe without asking for anything in return.

Damn. I knew recruiters were getting desperate

Also just the general seperation of people. We are social creatures. We need to form bonds with other, but thanks to nuclear families, and work from home, and the loss of so many other social functions, we are losing those bonds. Thats extremely hard on mental health and resilience

It's also probably inflated due to people making multiple accounts. I'm sure there's lots of us (myself included) who made an account on one instance and then decided to swap to a different one.

Exactly. It's not that people prefer the hot over the cold. It's thats they prefer the activities of one season over the other.

I prefer gardening, swimming, and a whole host of other things over ice skating or skiing. I prefer backpacking without needing to wear snow shoes. An ice cold lemonade is wayyyy more refreshing than a cup of hot cocoa. At least to me. To each his own.

Also, cold hurts, it makes exposed skin tingle and makes me less flexible. Heat is uncomfortable, you just have to manage your water and use of shade better.