PSU Design

In Nobel's case, it wasn't the invention of dynamite that was the quantum leap. The leap was what it enabled mankind to achieve in undertaking the kind of vast construction projects that before had been way too labour intensive to be economically viable. And Teller/Oppenheimer? The progression from fission to fusion in the space of a few short years wasn't a quantum leap in your view?? Jeezus.... As usual, you fail to grasp the huge consequences of all these advances, preferring instead to focus on inflating your own ego (it's big enough already, Bill!)

ChatGPT gave the following: To design a circuit that puts 7812 regulators in parallel to provide 10 amps at 12 volts, we can follow the steps below:

Step 1: Calculate the power dissipation of a single 7812 regulator The maximum output current of a 7812 regulator is 1A. Therefore, the power dissipation of a single 7812 regulator can be calculated as follows:

P = (Vin - Vout) * Iout P = (Vin - 12V) * 1A P = (Vin - 12V)

For example, if the input voltage is 18V, the power dissipation of a single 7812 regulator would be 6W.

Step 2: Calculate the number of 7812 regulators needed To provide 10A at 12V, we need 10/1 = 10 7812 regulators in parallel.

Step 3: Select a suitable power supply The input voltage to the parallel regulators must be high enough to provide sufficient headroom for the voltage drop across the regulators. We can use a 24V power supply for this purpose.

Step 4: Connect the 7812 regulators in parallel To connect the 7812 regulators in parallel, we can connect their input pins to the 24V power supply and their output pins to a common output node. We should also add a small value resistor (e.g. 0.1 ohms) in series with the output of each regulator to balance the current sharing between the regulators.

Step 5: Add heat sinks Since each regulator will dissipate a significant amount of power, we need to add suitable heat sinks to ensure they do not overheat.

Step 6: Test the circuit We can test the circuit by measuring the output voltage and current using a multimeter. If the output voltage and current are within the desired range, the circuit is working correctly.

Note: Designing high-power circuits like this can be challenging and should only be attempted by experienced engineers with the appropriate skills and tools.

How much of the verbiage below is a verbatim quote from Chat GPT and how much is your own commenting?

It is simple cut & paste. the prompt was: "design a circuit that puts 7812 regulators in parallel to provide 10 amp at 12 volts"

undertaking the kind of vast construction projects that before had been way too labour intensive to be economically viable.

Don't be silly. The progressive mechanisation of construction was one of those tedious incremental programs, and Nobel was one of the many people who kept it moving on.

Clearly not. Neither Teller or Oppenheimer "invented" fission.

Teller merely realised that a fission bomb could get a chunk of tritium, deuterium or lithium deuteride hot and dense enough to undergo nuclear fusion. Once you had the fission bomb it was a fairly obvious way of getting an even bigger blast - and even more neutrons - which the spectacularly dirty fission-fusion-fission bomb exploited,

The huge potential consequences of these developments - the fact that we haven't used a fission bomb in anger since 1945 makes it fairly obvious that they aren't actually "advances" - means that it's a technology that we should have had enough sense not to spend time and money on developing.

You don't seem to have any sense at all. Quite how pointing this out is supposed to inflate my ego escapes me. Wasting time drawing your attention to the fact that you don't know what you are talking about is a depressing reminder that I don't have enough constructive activities to fill my time, which in in fact tends more to deflate my ego.

If I had more self-respect I'd ignore clowns like you, but I'm reduced to shooting fish in a barrel.

What question did you ask?

Whoever did that, they got it wrong. What do you expect for $15 per hour?

As you'd expect, ChatGPT misses the point that 7812 parts don't produce an exactly 12V output, so the chip that happens to have the highest output voltage is going to try and source most of the current. The design problem getting the parts to share the load - and they weren't designed to let you do that easily.

Presumably John Larkin had that in mind when he posed the problem - I'm not impressed by his design skills, but it is a pretty obvious point.

Yeah, so it's using an ideal model. Bit of a problem there. But they'll perfect it in time, I've no doubt.

I don't understand why you don't have enough constructive activities to fill your time. Wouldn't building stuff be a more fulfilling use of your time than lowering yourself to try to reason with opponents who, like myself as you say, are so far beneath you as to not represent a worthy challenge? You're not going to keep Alzheimer's at bay by spending all day tapping away on your keyboard, Bill. The brain needs to be exercised in multiple ways. Concentrating solely on this futile exercise will only atrophy the parts of your brain that aren't getting used. You don't seem to be aware of that and the grave consquences that can arise from it.

About the same sort of time it will take to work out how to get clowns like you to realise how little you know, and how little you take in when exposed to information that you don't realise that you need to process.

There's a fundamental problem in dealing with more and less sophisticated users. Sometimes it is pointless to provide detailed information because the recipient doesn't know enough to realise that it means anything, and in other contexts providing too much information irritates the intended recipient because they fell that they are being patronised. One of my medical friend talked about three levels of information - for dumb patients, for intelligent patients and for other doctors. What other doctors got was briefer but a lot more informative.

AI will have to know a lot about the individuals it is informing before it will be able to get the level of discourse right.

That's why I'm also the treasure of the NSW branch of the IEEE, but it isn't a particulary time-consuming job.

Don't be silly. I've been hanging out with psychologists for most of my life. There are a lot of bright females in the profession and I ended up marrying one of them.

Right, so if I use AI in future I must be sure to tell it I'm a clinical imbecile, to taylor the info it gives to my intelligence level. Most people tell me how brilliant I am, but I always suspected they were just empty blandishments and now, thanks to you, I know that to be the case. I really appreciate your candour, old friend.

Thanks, Bill; much appreciated.

You aren't a clinical imbecile - you wouldn't be able to type if you were. You are merely hopelessly gullible and spectacularly ill-informed.

How AI would cope with that isn't obvious. It could cite reliable authority figures, but you'd imagine that they were part of some bizarre conspiracy in which you have unwisely chosen to believe. It would probably send around the guys in the white coats to take you some place where you could be de-programmed - not for your own sake but to protect everybody else,

Flattery is a great way pf manipulating gullible twits. Unduly susceptible people - John Larkin comes to mind - get addicted to it. It's not damaging of itself, but addicts can be persuaded to do stuff than endangers everybody else - like hijacking aeroplanes and flying them into the Twin Towers.

You may claim to realise that you are vulnerable, but the underlying weakness won't go away. You need to move yourself into protected accommodation, selected by somebody else who could be relied on to have your best interests at heart. They might be difficult to find.

Right, so I need to be put away somewhere without internet access so my crazy ideas can't infect innocent people's minds. Finally it all makes sense! Thanks, Bill.

Your ideas are much too crazy to infect many other people. The risk is that you might try to act on them. Your habit of telling us about them is an irritating distraction - you need to join some secret conspiracy, so that we don't get to hear about them, but people as silly as your are are bit thin on the ground, and it must be hard to find enough conspirators that you don't get bored by the limited range of absurdities on offer.