Whole house "battery" wiring/power...

[krw]

Existed = have been. You said nothing about being manufactured, DimBulb. You implied that they didn't exist.

[Archimedes' Lever]

Our power supply company survived after 911, a time when several hundred other companies failed.

Those supplies were and are in a lot of the things you use because we were OEMers for hundreds of companies as well.

You're an idiot, KeithTard.

Also, regardless of what the max frequency a regulator *can* operate at, that does not mean that they get designed to operate there.

Folks engineer a supply on the bench, and the final most efficient frequency a design runs at my not be the original estimation. I would not expect you to get it though.

No... NONE of our units ran that fast. Magnetics tends to get inefficient at passing power at too high a frequency. Our HV supplies may have had switcher front ends, but they typically had a transformer driven final feeding the multiplier stage. Most all were

[Archimedes' Lever]

A prejudice is usually something one has against something, not for it.

To be for something is to be "partial to" or "predispositioned for" something.

[Archimedes' Lever]

Good thing that you are the only one that used the word. I never said anything about "existed". Though it is a shame that you do.

[The Daring Dufas]

My statement still stands. I've never seen a switching regulator that ran at 1Mhz. Just because the chip is capable of 1Mhz does not mean that that is the switching speed of the regulator. Most of the design engineers I'm familiar with tend to be conservative. Your opinion is not that important. Opinions are like tailpipes, everyone has one, except for those like you who have theirs transposed with their induction system. FLNF

TDD

[krw]

Idiot. That is the switching speed of the regulator.

They don't have a choice, darling dufus. The regulator switches at

2.25MHz, whether they're conservative or commie.

My opinion may not be important to you, but my facts are at least facts. I do this stuff for a living, you? Clean septic systems? ...with a mop?

[krw]

DimBulb, if it survived *you* I'd be surprised.

At least I know something about switching supplies, AlwaysWrong. ...and I don't even work in the area.

DimBulb, that *IS* the frequency it operates at. It's a constant frequency regulator, as are most these days.

Idiot.

[krw]

"Usually" has nothing to do with it, DimBulb. The word was used correctly. You were wrong again, AlwaysWrong.

Synonyms, noting more or less.

[krw]

You really are a dim bulb, DimBulb. You said: "I do not think there have been DC elevators in the US since the late Thirties". The fact is that there _have_been_ (i.e. existed) DC elevators as recently as

2007. In fact they are likely still there, though the conversion would now be done on-premises.

In short, AlwaysWrong, you're wrong again.

[The Daring Dufas]

Oh my God, a professional actinic sphincter. FLNF

TDD

[James Sweet]

Just because you've never seen it doesn't mean it doesn't exist or is not in common use. Here's your citation, note that the article is dated

2002.

"SMALLEST, 3V INPUT, 1MHz, 92% EFFICIENT DC-DC STEP-DOWN DELIVERS 10A"

So these are not off-line SMPS, but so what? They're still switchmode power supplies by definition. TI and several others have similar parts. It is very likely you have one right in front of you supplying the core voltage to the CPU in your computer.

[The Daring Dufas]

That is so cool, I still haven't come across one yet, that I know of. Now I know what to look for. I'll have to look at the motherboards of several of my computers. According to the date of the article, the things have been around for a while.

TDD

[James Sweet]

While I don't condone is attitude, he is absolutely correct. MHz switchers are common, have been in the field for years, and by the demands for miniaturization are getting more common all the time. If you don't believe me, pop open your PC, cell phone, PDA, etc and put a scope on one of the DC-DC converters. Also with many of these chips, the switching frequency is fixed and is not something the engineer has a choice of. The duty cycle varies to regulate the output.

This is not something you'll find in the line operated power supply, but applications like CPU core voltage which may have to supply less than 2V at 50-80+ Amps (no, that's not a typo) from a 12V source where board space is a valuable commodity, or applications needing extreme miniaturization demand this sort of thing.

[krw]

What you have your mop out? Looking for work?

I was wrong, you and DimBulb are made for each other.

[The Daring Dufas]

Thanks, I just looked at the products available from:

I've used their other products for years but I was not aware of their switching regulator chips. The original discussion concerned "SIMPLE" DC power supplies and some jerk chimed in calling everyone stupid, etc. My experience has been with the switching power supplies in computers and test gear which is what I thought the discussion was about. I've never seen one of those running at 1Mhz or more. A tiny regulator on a card or motherboard running at 1Mhz or more is something new to me. Heck, I learn something new everyday.

TDD

[The Daring Dufas]

Kid, I can guarantee that if you and I entered the same industrial site, I would be able to handle more of the systems than you could. Don't get too arrogant, unless you're Superman. FLNF

TDD

[krw]

See, you're always as wrong as AlwaysWrong.

Ohh, you must swing a mean mop.

Don't worry. I don't want your job, dummy.

[krw]

Only because you (and DimBulb) *ARE* stupid, stupid.

BTW stupid, you don't get much simpler than a (part of a) chip, inductor, capacitor, and two resistors.

Stupid, Sweet just said they're used in the core supplies of PCs. Though I suppose actually reading what people write is a bit beyond you.

Engage brain before mouth, stupid.

[The Daring Dufas]

Sorry Superman, you couldn't handle it. FLNF

TDD

[The Daring Dufas]

Oh yea, I forgot, you talk out the other end. FLNF

TDD