Little 1:10 audio transformer as HV transformer

Robert Baer

slight ups and downs,

will be very very cold.

earth

the

does

add

In principle you can have almost 200%, if you swing it back out the way it came in.

Not necessarily. If you swing it round Venus afterwards, it'll be in a Venus-intersecting orbit instead, and it shouldn't be too hard to make sure it'll never have enough energy to climb back up to Earth's orbit.

'taint today's problem, but round here we've become so very boring and predictable about today's problems....

Cheers

Phil Hobbs

Baer

ups and downs,

will be very very cold.

earth

Sure. It's my thought experiment and I'm sticking with it.

MOSFET,

oscillogram

the Cds of the MOSFET.

limiter

gives efficiency 69%

bigger,

controller again

worse.

for too low.

guess.

too.

I could be wrong, but I think the pulse you're seeing with the On-Duty could be left over flyback energy that is still dissipating from the last cycle. Are you monitoring the current there at the off-duty cycle?

If you could do a dual scope read of the gate signal and current sense line, this should reveal it, if that is what's really happening. Otherwise I don't understand where that pulse would be coming from?

If this does turn out to be the case, maybe you could program the comparator in the off duty to monitor for a low current before switching back on.

Also, I noticed you don't show a gate drive R ? Not that it may matter, the PIC could be current folding enough to prevent ringing.

In any case, glad to see you enjoy that way of regulating the duty cycle.

Jamie

Sloman

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And plenty that it doesn't, at the PPB per year level anyhow. So even though there's hard evidence that the mass isn't changing enough to measure, the possibility is still acceptable to discuss.

and even less for the existence of other universes,

He objected to the word "incontrovertible", which totally cuts off discussion. The possibility is *not* acceptable to discuss.

That was his point.

Ah: CO2 has "unavoidable consequences of this for the global temperature", but we shouldn't pay attention to the actual temperature record, lest it contradict the "incontrovertible" findings.

Not even temperature is apparently central to the religion of global warming.

John

Robert Baer

slight ups and downs,

will be very very cold.

earth

the

does

Not if it hits the sun, or slings around a couple of planets and then hits the sun or gets ejected from the solar system.

It doesn't need zero angular momentum to hit the sun. The sun is a pretty big target.

Now you're sounding like Fields, quibbling about zero and infinity.

All it has to do is work.

It occupies about half a degree of the sky here. That's pretty big.

You have to cancel the orbital velocity to get

That's the whole point, to steal its angular momentum. Or most of it.

If you first convince yourself that something is impossible, you're not going to design a mechanism that does it. You won't even try.

I take a lot of business away from people who think things are impossible.

John

Robert Baer

slight ups and downs,

will be very very cold.

earth

the

does

add

Venus's energy. And maybe Jupiter's. Not ours.

John

BillSloman

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His word. He wanted to open a discussion where there wasn't anything to be gained from it, and got shirty when nobody would take him seriously, much as you do when we deride your sillier ideas.

That was what he wanted to say. The point he was making was that he had opinions in an area about which he knew very little, and rather than spending the time required learn sometning about the subject, he resinged from the organisation in a huff.

Far from it. But the global temperature record is noisy and - mostly - localised, and it doesn't tell us a much as do the CO2 levels in the atmosphere where the signal is less noisy and the CO2 distribution relatively uniform.

Anthropogenic global warming isn't a religion - it's a well-founded scientific hypothesis, based on evidence that you've never tried to understand. One of the consequences of that hypothesis is that the global temperature is rising - which it is. Unfortunately, atmospheric greenhouse gas concentration aren't the only thing that affects the global temperature - the El Nino/La Nina Oscillation certainly affects it, as does the Atlantic multidecadal oscillation (AMO) and there are probably ther ocean currents out there making their own contribution. The Argo buoy project is tellng us more about these ocan currents, but there is still a lot left to learn.

-- Bill Sloman, Nijmegen

Robert Baer

slight ups and downs,

will be very very cold.

earth

the

does

As long as your world is limited to the inside of your skull.

Robert Baer

slight ups and downs,

it will be very very cold.

earth

the

does

add

There are limits to what you can add or subtract at each encounter.

Robert Baer

slight ups and downs,

will be very very cold.

earth

the

does

add

That would assume you can cancel the solar orbital velocity. I don't think so.

Again, you assume you can cancel that much energy. I don't believe it.

If they're so boring, why don't we JUST do something about them?

ned Robert Baer

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Exxon-Mobil - and other organisations making big money out of extracting and selling fossil carbon - would end up making smaller profits every year. Politically speaking, this is more important than the long term survival of advanced industrial human society.

-- Bill Sloman, Nijmegen

On a sunny day (Mon, 19 Sep 2011 09:09:19 +0100) it happened John Devereux wrote in :

Thank you, and it worked :-)

On a sunny day (Mon, 19 Sep 2011 16:07:26 -0400) it happened Jamie wrote in :

MOSFET,

complete.

oscillogram

charging the Cds of the MOSFET.

limiter

gives efficiency 69%

on/off.

bigger,

controller again

worse.

for too low.

guess.

too.

Yes I did dual trace with external trigger from the gate drive all the time. I am pretty sure it is the charging of the Cgs (about 220 pF), but I could be wrong. Note that that current measurement is taken with the scope ground on the +5, and the input on the other side of Rs, so 'upside down'.

Just for experimentation I removed the low pass C2, leaving R3, and things just kept working OK. At one point I suspected that pulse to be some scope-probe pickup, but it seems to persist also when measuring in a different way, but I could be wrong.

Yes calculations show that the PIC can easily charge and discharge this Cgs of about 880 pF, at this pulse rate of 140 uS. Long time ago I calculated the rise time and fall time for that for this project: http://10.0.0.150/panteltje/pic/pwr_pic/ that is actually by bench power supply these days.

Yes, it is nice, I should have used the term 'proportion band' I think. So for Rs = 0 the proportional band is zero, and it will switch on and off (for the other watchers), of course you need to specify a reasonable pulse width in software in that mode.

hysteretic mode system switches on and off here \/ ------------------------------ . . . . Rs = 0

----------------

The bigger Rs, the bigger the proportion band, and the system will then find equilibrium somewhere is that linear area, this decreases load stabilisation, so there is the compromise.

system stabilises somewhere in this area | | ------------------------------ . . . . Rs = 1

----------------

system stabilises somewhere in this area | | ------------------------------ . . . . Rs = 2

----------------

|| proportional band It size of this proportion band is easily calculated in this circuit: For a 5 V supply, and a 100 mV drop at max Id over Rs, then the proportional band is 1 / 50, or 2 %. The output will then adjust somewhere in this 2 %.

Anyways, this is nice for my own documentation, I have now moved to the next processor in this multiprocessor project, and am now writing the firmware and designing the hardware for that. Yes an other multi-PIC project :-)

As a last remark: I added slow start in the software, so it starts up with a very low max duty cycle, and then slowly increases the maximum duty cycle, to a final maximum. You can probably even make it so you can switch to hysteretic mode in the software, by switching the comparator to Vdd for internal reference. In the test setup I can control almost all parameters via RS232, and those are saved in EEPROM, in the final version those values and settings will be fixed values in FLASH.

It's still 100% (well a Larkin's distance from).

Requires the ADDITION of energy, which you've already subtracted by 1) moving it closer to the Earth from where it was, and 2) used to add to Earth's energy.

A Larkin zero.

Now hit it with an ballistic projectile.

There are limits on the energy that can be stolen in a pass.

Impossible? Physics states what's impossible. Engineering what's too loony and dangerous to try.

I sure hope no one, other than your wife, is trying to get you to move the Earth.

downs,

very cold.

Well then, I'm just not going to concern myself with the debt and deficit. Mikek :-)

Yes.

Maximize your debt! Purchase all the toys you've ever wanted and a few extra when you can no longer obtain them.

Not to worry, the way the country is going with our leaderships mentality, it won't matter!

While you're purchasing items you can not afford and know you can never pay back, like our government, make sure you get plenty of survival items for the long haul, you're going to to need them when the BIG D gets here.

P.S.

Sorry china, guess we can't pay you back now, you're in it along with us! And for those that have most of their wealth on paper, guess what, you'll know what it'll feel like on the other end of the stick!

Jamie

pick

are

which is

Without providing any numbers or links you sound like a nattering nabob = of doom.

My issue with that technique is to find the energy to get to the = asteroids and then deflect them.

?-)

aer

ficit.

This is good advice, if you expect runaway inflation, which would be one way for the US to deal with it's national and international debt.

The Tea Party hasn't got enough sense to appreciate the - dubious - virtues of inflation as a way of coping with debt, and are fixated on balancing the budget so that the debt won't rise any more. Since this involves stopping stimulus spending - whch doesn't worry them since they haven't got the wit to understand how it works, let alone to see that it has been working - it puts the country into recession, and probably outright 1930's-style depression, which creates deflation.

The deflation would be good for everyone who had lent the US government money, but payig off the debt from the reduced tax income of a country in recession wouldn't be enjoyable. Japan has been illustrating the problem for some twenty years now.

If it ever arrives. The Tea Party idiots are silly enough to put their ideological delusions above practical issues like winning elections

-- Bill Sloman, Nijmegen

It only warms one half at a time. So its actually hemispherical warming. Not global.

-- Paul Hovnanian mailto: snipped-for-privacy@Hovnanian.com

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