Use for the Tesla Switch

[StevanC]

The Flying-Supply for the Flying Duchman [21st ct. battery pirates]

Its now time to introduce You with another concept, enter
The flying power supply


1. We all know JT type of circuit.
2. And the advent of switch-mode BJT with low Vce(sat) like the D44H11 is (and D880)
And the 2N2222 is not but it could go here
3. And we know of the special "crowbar" safety that can be achieved with 10V10W string of Zener diodes. I intend to use 5 (fiive) of them
4. And we all should be able to produce a 0.5mH transformer (xfmr) with three (or four) 0.4mm windings? Could anyone step forth with wrap numbers?
5. two capacitors of 100 ... 470uF 35...50V rating

We intend to produce a 20V floating end supply for a flying load.

Next time in "21.st century battery pirates":

A. THE schematic
B. How it works
C. HOWTO build

Stay tuned until next time in "21.st century battery pirates"...
qP-{)> (capt'n Dave )

[StevanC]

21st century battery pirates [series]


You still are here, thanks

here the first part of the schematic


So, we all know JT, right?
The BJT starts "in Que" (=short) and as the first impulse rises, it induces voltage in both the feedback and the secondary winding.
In the feedback, voltage trough base generates current, effectively shutting the BJT OFF.
As soon as the BJT is OFF, the current ceases to flow through the primary, causing the Mag-Field (MF) to decay which, in turn, produces current INRUSH to both the primary and all other windings, only opposite direction: the BJT slams wide open but the current can't flow Collector to emitter in opposite direction!

This creates a KICK (tm) that brings the "node" in between the BJT and the COIL "under pressure" (TM @ZZtop )
But since we don't have a "release valve" here, the pressure goes elsewhere: it divides across the other windings:
The part going trough the base is limited by the 4k7 resistor - it determines the consumption in a large extent
The other part ends up in the "floating sections"
Here I want to make something clear:

SPICE is really noxious about grounding each and every part of a circuit ("no floating nodes"), so I did it, but in reality we won't okay?

In each floating section, (note we have inverted only the "primary") we receive the KICK (tm) and let it pass over a rectifier diode, if it was easy I would put here 1N4007, but spice includes only Motorola devices...
Therefrom we short out everything that's above 20V, or at least alost everything
Therefrom, we store the excess energy in the capacitor and "bleed" a bit with a 1k Ohm resistor (freewheel resistor).

And the three Zeners next to the D44H11? They serve to prevent voltage levels (much) above 30V so the device can be safe tor a 40V rated device.


that's it.

This particular (single) supply could be connected to my IRS21851's Vboost and Vg legs and serve to energize the device with above 18V levels all the time

Just add another "output" winding with exactly same parts and either:
A. lower the 4k7 resistor to say 2k2
B. increase the 1k resistor to twice 2k2 (one for each output)


Thanks for reading
Stevan C.

[StevanC]

a bit OFF TOPIC but who knows...

Pockels effect - Wikipedia, the free encyclopedia
it is about modulating light by voltage
and in the first few lines is guess what: gallium arsenide: the BJT from the 60's?


After wikipedia, i did my LTspice-brain-gym...
think this:
Cockcroft-Walton_generator
This is important


Best regards,
Stevan C.

[StevanC]

One more schematic (sorry)

This is the LAST one today...

Stevan C.

[ldissing]

Battery type

Has anyone given any thought to the type of batteries that JB was using. He was using NIMH car batteries. Don't know what the voltage is on one of those, I think he said 7.2, but I have a small 14.4V 3Amp hour battery and it will swing 10 V to the downside on a HV pulse. Perhaps JBs findings, reports, and discussions were related to mostly the NiMH batteries with the "negative" spikes? My NiCD and LABs swing (max 2V to the downside), but not nearly what the NiMH will do. The upward swing after the downward on the NiCD and LABs is ~+4V, where with the NIMH, it goes to -3 then 0. No upward spike on the NiMH...

This is all, of course, with a HV low current pulse, and not with a 2X Voltage and high current pulse.

Leroy

[StevanC]

Has anyone given any thought to the type of batteries that JB was using. He was using NIMH car batteries. Don't know what the voltage is on one of those, I think he said 7.2, but I have a small 14.4V 3Amp hour battery and it will swing 10 V to the downside on a HV pulse. Perhaps JBs findings, reports, and discussions were related to mostly the NiMH batteries with the "negative" spikes? My NiCD and LABs swing (max 2V to the downside), but not nearly what the NiMH will do. The upward swing after the downward on the NiCD and LABs is ~+4V, where with the NIMH, it goes to -3 then 0. No upward spike on the NiMH...

This is all, of course, with a HV low current pulse, and not with a 2X Voltage and high current pulse.

Leroy

Leroy,
I have given many, many thoughts,
but I still seek a "tool" so I could possibly delve into exploring it, bu this time- "equipped right way" and "from the start up"

so far this CP I've built (thanks to SeaMonkey ) has show some extra properties that my digital scope fails to catch ( this is rather good ).

I get a sharp rise of 50% the total amount in sub 1usec (~5A) and therefrom i get a ~20usec "hump" ramping up to the rest (~9A) of the peak.

(o-scope shots in due time )

I wonder:
A. What the "vertical" indicates
B. what the "slope" indicates


Best regards,
Stevan C.

[StevanC]

fryday report

Not that You interested, but it was fryday today.
Luckily i bought double quotes so it won't be buydey today nor tomorrow


The outcome:
1. one ATmega48 Quer is fried (dead)
2. The 7812 and/or 7805 seems to be dead too
3. the 555-CP survived luckily

I have a spare 07301 and spares for the LM78xx parts

Just to share the feeling:
Stevan C.

[ewizard]

Pockels effect - Wikipedia, the free encyclopedia
it is about modulating light by voltage
and in the first few lines is guess what: gallium arsenide: the BJT from the 60's?


After wikipedia, i did my LTspice-brain-gym...
think this:
Cockcroft-Walton_generator
This is important


Best regards,
Stevan C.

I like that Cockcroft-Walton_generator and the voltage multipliers shown there. That's an interesting and seemingly better way to step up voltage. Is there a reason this does not replace transformers in more circuits? I'm guessing it's more efficient and possilby cheaper to build especially with copper prices being up so high in the last couple years?

[StevanC]

Surprisingly, the model is vaild in LTspice (works)

This means:
bipolar switch bridge ("totem pole") would allow for really huge voltages without copper.

The 555 based voltage double works too (=doubles) for up to 200mA sourcing and up to 90ma providing (double).


Is this the dawn of TS-next_generetion the TS-ng?



Stevan C.

[StevanC]

New AVR frimware utilizing interrupts in C

Hi,
I'm midway reconstructing the destroyed device(s)


the new updated source is here:
advpulser-0.2.zip - 4shared.com - online file sharing and storage - download

if anyone feels like "doing it"

all is same, only the "Que" is from interrupts instead from a busy loop...
Timing is virtually the same.

Best regards,
Stevan C.

[plengo]

What is the status of this project? It would be easier to ask than read 100+ pages.

Is the Tesla Switch finally working or still in good progress?

Many thanks,

Fausto.

[wwdotme]

3 battery switch

I was playing with my 3 battery switch tonight.
Normally it out puts about 10v when powering small cpu fan or lights.
Then I thought I would see if it would power my solidstate bedini charger.
And it did supply power for it 16.5v and 1 amp charging another battery.

So i'm charging batteries with the 3 battery switch
powering my ss bedini chargering a battery.
All batteries are lead acid car batteries.

Well thought it was interesting and I would tell the forum.

Still working on my mechanical 4 battery switch.

::edit::
well on 3 fully charge batteries on 3 battery swith It only does 14.5v 1amp on ss bedini charger


Thanks Bill

[StevanC]

There where errors!!



I humbly apologize to the 18 downloaders of the now obsolete file I provided on 4shared web-service.

There where errors

The code and the comments to not match (but You probably figured that by now). They create a false impression of something that actually newer happens in reality!
To make it even worse, the code did produce the seeminly expected action, only the wrong way!

How I know?

Well, as soon as i tried to implement the gradual load increase on startup it bursted right in my sorry face!

I mixed it up!

Now afer hours of tedious afterthought and study, then again careful software engineering and development and yet again many hours of ever most profound reconsideration, I bring to You the last but not least:
The ever best most up to date:
"advpulser just got better"

the brand new source:
where do You want to tell me to go today?
Where You want me even more to go-for workgroups




Stevan C.

P.S.
on ocassion it makes cells rise a residue:
bad cells rise red kind of "dust"
good cells rise black kind of dust in the acid?
then I let them rest...

[StevanC]

Hi folks, don't hold Your breathe,
I run few L.A.B. restoration and will be "off line" for a while

Stevan C.

[StevanC]

In case, anyone is interested in how a frame of a PV system (island-personal-power-grid) calculation should look like (it's in Serbian sorry ).
there IS a .odt "chewed up" version obtainable, but I'm now willing to share "for free"
it will be "shared for fee" instead (sorry) (like $10 or 10EUR or so)?

But it will be available under NDA?
PV-calc-2010.pdf
Am I an sick bastard?


Best regards,
Stevan C.