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Author Topic: Testing the TK Tar Baby  (Read 1998280 times)

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #225 on: April 08, 2012, 06:07:18 PM »
Well, there have been a few other tests and explorations performed; and they are up in the usual place. Please check them out if you haven't already.

Here is an interesting one, with a little surprise at the end. No, nobody is going to scare you...unless you have a mosfet phobia. Some people do, I understand, which prevents them from understanding how they work.

http://www.youtube.com/watch?v=HpqqEefYENU


Meanwhile, I've decided to make public my NERD RAT Test Prevention technology. This is how I am able to manage to prevent the NERD RATs (although I think there's only just the big old scrawny one left) from testing their battery capacity all the way on the other side of the planet.

You see, it's vital that they be prevented from proving their claims, and I know that I can't possibly do it by forum posts alone, so I've developed the Tesla longitudinal scalar quantum frequency wave linecaster and programmed it with frequencies that will turn the NERD RATs minds to mush. What's not mush already, I mean. In this manner, as long as I have the unit powered up and in the correct mode, the entire southern tip of Africa will be blanketed by the linecast and nobody there will be able to do any battery drawdown tests at all.

http://www.youtube.com/watch?v=LZQ498owHYE

poynt99

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Re: Testing the TK Tar Baby
« Reply #226 on: April 08, 2012, 09:54:49 PM »
What brand of ping-pong ball is that TK? I want to do a rep-li-ka-tion.  ;D

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #227 on: April 08, 2012, 11:29:48 PM »
Data data data, tra la.

It appears Rosie has a burr under her saddleblanket and is kicking a bit. The TRUTH can be irritating at times, can't it.


Now.... I'd like to know, since Tar Baby is NOT a replication of NERD, just exactly how it is different in any significant way, so that I can  fix those deficiencies and make it a REAL replication that we can test without you-know-who's interference and logorrhea.

I've painted my pegboard white and it's drying in the sun.....

 8)


(I no longer consider that the FG might be recharging the batteries, of course. Now I know... that the FG --or even the 555 timer--- is actually providing power to heat the load in the low heat, negative drive pulse, Q2 osc mode !! So of course the batteries don't run down.... much.)

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #228 on: April 08, 2012, 11:40:18 PM »
What brand of ping-pong ball is that TK? I want to do a rep-li-ka-tion.  ;D

Stiga brand, 40 mm regulation size, a box of 46 costs about 12 dollars at Academy. Precise holes can be drilled using a step-drill of the "unibit" kind. Don't try a regular twist drill !!

MileHigh

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Re: Testing the TK Tar Baby
« Reply #229 on: April 09, 2012, 12:05:59 AM »
I just watched your "function generator offset explained" clip.  That's one hell of a function generator!  John Hutchison must be envious.

Not a touch screen, floppy drive, or USB port in sight.   Ahhh....



TinselKoala

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Re: Testing the TK Tar Baby
« Reply #230 on: April 09, 2012, 12:28:54 AM »
I just watched your "function generator offset explained" clip.  That's one hell of a function generator!  John Hutchison must be envious.

Not a touch screen, floppy drive, or USB port in sight.   Ahhh....

Interstate Rules !! I actually have two, the F43 High Voltage model with step calibrator here, and in another place I have the F34 Sweep Function Generator, which has frequency sweep capability... very cool.
They are all big-trace circuit boards, discrete components and a few op-amps and logic chips, very easy to maintain if needed. Don't drop one on your foot, though !

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #231 on: April 09, 2012, 01:06:40 AM »
I think the time is nigh for the Big Question: How is Tar Baby different, in any significant way, from Rosemary Ainslie's NERD device described in the papers? Just what factor keeps Tar Baby from being an actual replication of the NERD device?

It can't _really_ be the white pegboard, can it?

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #232 on: April 09, 2012, 01:12:01 AM »
Load is at 124 degrees F, inline ammeter says 230 mA, nice oscillations on the Q2s, Q1 inactive but present, and NO FUNCTION GENERATOR, just the 555 timer making the pulses.
The duty cycle has changed a bit as the components have aged, but everything else is stable and getting warmer.

Oh yes... open-circuit battery voltage is now 35.3 volts.



So.... that's how Tar Baby is different. Its batteries run down while heating up the load....... awwwwwwwww dammit.


picowatt

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Re: Testing the TK Tar Baby
« Reply #233 on: April 09, 2012, 03:14:17 AM »
Well, there have been a few other tests and explorations performed; and they are up in the usual place. Please check them out if you haven't already.

Here is an interesting one, with a little surprise at the end. No, nobody is going to scare you...unless you have a mosfet phobia. Some people do, I understand, which prevents them from understanding how they work.

http://www.youtube.com/watch?v=HpqqEefYENU


Meanwhile, I've decided to make public my NERD RAT Test Prevention technology. This is how I am able to manage to prevent the NERD RATs (although I think there's only just the big old scrawny one left) from testing their battery capacity all the way on the other side of the planet.

You see, it's vital that they be prevented from proving their claims, and I know that I can't possibly do it by forum posts alone, so I've developed the Tesla longitudinal scalar quantum frequency wave linecaster and programmed it with frequencies that will turn the NERD RATs minds to mush. What's not mush already, I mean. In this manner, as long as I have the unit powered up and in the correct mode, the entire southern tip of Africa will be blanketed by the linecast and nobody there will be able to do any battery drawdown tests at all.

http://www.youtube.com/watch?v=LZQ498owHYE

TK,

I only have a minute, but nice videos!  I have not laughed that hard in some time watching the second one.

You better include a disclaimer stating that no stuffed critters were injured in the making of that video..

Now, I have some testing to do here, so could you please turn that thing off or point it the other way?


PW

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #234 on: April 09, 2012, 03:25:08 AM »
@PW: Thanks !! I'm glad you got a chuckle out of it. Many of the alt.snakeoil Video Reports have a similar...er... irreverent quality about them.
Don't worry, I think you are probably immune to Tesla longitudinal scalar quantum frequency linecasts. But just in case... better put on your foil hat (and underwear) as a precaution. Sidebands, you know.

Meanwhile.... I went ahead and trusted my remaining PG50s to the 555 driver.

Scope shot showing 555 timer pulses and drain trace, using 4 x IRFPG50 mosfets in the Q2 positions. Since the timer makes a positive pulse, to get the circuit to see it as a negative pulse... required swapping the little red thing for the little black thing, and vicey-versey.

It is confirmed that I am oscillating Q2s and leaving Q1 off. The Q2s are slightly warm and the Q1 is stone cold, and the circuit is carrying 200mA at least, by the inline DMM, and the load is maintaining 120 F. Touching the Q2 wiring or heatsinks causes the oscillations to change or go away but they are trivial to restore. The hot 555 timer adds some distortion to the overall waveform but with careful settings on the 555's input DC power you can get to the "classic" RA oscillation envelope as shown below.
 
Top is the pin 3 output from the 555 at 5 v/div, (also shows that "voltage floor" phenomenon), bottom is the common drains at 20 V/div, timebase at 0.5 ms/div.

poynt99

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Re: Testing the TK Tar Baby
« Reply #235 on: April 09, 2012, 04:37:00 AM »
Just a FYI TK, in case you were not aware;

In most of the scope shots Rosemary posted, the HV oscillation trace is from the high side of the load resistor, rather than directly off the Drains.

The wave form might look a little different there (in amplitude anyway). That's where I always measure in the sims in order to match what the posted results are.

Just something you might want to try.

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #236 on: April 09, 2012, 04:41:03 AM »
I figure the very best way to..."prevent" the NERDs from using the very simplest 555 timer that I used is to post the schematic someplace where she won't be able to find it. Like on the internet.

That way, if she ever does decide to test she will never be able to bring herself to use something I came up with, and she'll waste tons of time trying to develop her own timer.

I kind of like this role she's cast me in... the evil Debunker in his bunker, debunking bunkum with reverse-engineered bunk.

(ETA: I forgot to put the pot value on the schematic. It is a 100K trimpot.)

(ETA 2: GL noted that I should have indicated the "-10V" supply point as "0 V". The notation I used is  misleading because it usually refers to a bipolar supply and that isn't what is intended here. Think "9 volt battery" and work up from there. Sorry if there was any confusion....)

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #237 on: April 09, 2012, 05:18:17 AM »
Just a FYI TK, in case you were not aware;

In most of the scope shots Rosemary posted, the HV oscillation trace is from the high side of the load resistor, rather than directly off the Drains.

The wave form might look a little different there (in amplitude anyway). That's where I always measure in the sims in order to match what the posted results are.

Just something you might want to try.

Ahh...I wrote a nice long answer to this then the forum ate it.
The high side of the load is the "battery" trace in her data, isn't it? I've found that this doesn't give me as much info on my setup as the common drain trace does (the transistor side of the load). The circuit is so sensitive to inductances that even moving the probe ground lead from the negative rail on the board, over about ten inches to the negative battery terminal itself, makes a big difference in what features I can see and how stable the feedback state is.
(What's neat is at low amplitude the feedback is an almost perfect sine wave !)
The NERDs show the drain trace in the video, and should have shown it in the paper data too.
The probes in the center of the board here are on the common drains, I believe.
But yes, sure, when I have the Tek DSO to play with I'll look at the high side of the load too, and other places. It's just that my analog scope and all these wires make the "battery" trace useless to me.

Groundloop

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Re: Testing the TK Tar Baby
« Reply #238 on: April 09, 2012, 05:20:07 AM »
I figure the very best way to..."prevent" the NERDs from using the very simplest 555 timer that I used is to post the schematic someplace where she won't be able to find it. Like on the internet.

That way, if she ever does decide to test she will never be able to bring herself to use something I came up with, and she'll waste tons of time trying to develop her own timer.

I kind of like this role she's cast me in... the evil Debunker in his bunker, debunking bunkum with reverse-engineered bunk.

TK,

Where did you put the current return path for your +10 / -10 Volt power supply for the 555 circuit?

GL.

TinselKoala

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Re: Testing the TK Tar Baby
« Reply #239 on: April 09, 2012, 05:26:47 AM »
TK,

Where did you put the current return path for your +10 / -10 Volt power supply for the 555 circuit?

GL.
Oh sorry, you are thinking it's a bipolar supply like for an op amp? My bad, I guess I didn't make it clear. It's just a single 10 volt supply, the positive to the +10V and the negative to the -10 V. I guess I should have labelled it +10 and 0, or something. Sorry about the confusion, it has been a rather long weekend.  Obviously, whatever supply you use must be kept floating wrt the main circuit, or I dunno what will happen.

A fresh nine-volt battery will work fine but won't be as stable as a regulated power supply. The circuit starts working at about 5 volts, continues to increase osc amplitudes until about 12 volts, and lets the magic smoke out of the 555 at around 15-16 volts. I used a small heatsink on the 555 and it helps the stability a bit, I think.

(Thanks.. I really should correct the diagrams, and I will, but a bit later on, I'm pretty pooped right now.)