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Author Topic: A Kapanadze generator replication - Febuary 2013  (Read 290923 times)

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #15 on: March 03, 2013, 05:21:13 AM »
I think you should work from Kapanadze's patents rather than Naudin's non-replication.

I plan to build 4 coils, plus the condenser 'option' on the Lithuanian coil.  The HV driver will be the same, though.  Some people seem to have gotten decent results with that coil, and it seems fairly easy and cheap to build, so why not ?  The copper can always be reused.

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #16 on: March 03, 2013, 05:41:56 AM »
I need a signal generator, for tuning the beast. It should have the following features:

- Range from 15kHz to 20~30MHz
- Sinusoidal wave output and its 180 degrees phase.
- Square wave output with adjustable duty cycle.
- TTL or CMOS level at least.
- Frequency sweep would be nice.

Since I don't have 1000€ to invest right now, I was looking into building one from scratch.  But aside from the time it will take me,  I know it will cost at least 75€, the frequency sweep alone is not a trivial matter since the requirements demand a VCO that will cover that frequency range AND give me a perfect sine wave.

Fortunately I've found this little DDS module based on an AD9850 on eBay.  It fits all of my requirements, and can handle up to 23 million frequency changes per second for a fairly smooth sweeping. The only thing is that the sine output impedance is a bit high at 150k.  I will add a high performance opamp (an    OPA4350UA) that will give me the drive I need.  I have an Arduino laying around for driving it.  I will post the source code here when done.

So things are not turning out too badly on this one as this is much needed piece of equipment. I will end up having a compact, high precision signal generator, with a USB interface for under 30€, and a couple of days' work (that's if I do make a Windows user interface for it).

m:o)

« Last Edit: March 03, 2013, 09:27:57 AM by tika »

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #17 on: March 03, 2013, 09:25:51 AM »
Excellent idea tika.  Nice work in setting all this up for such a good cause.   It's also nice having a largely build related thread in the Kapanadze device.  Best of luck with your build.

Thanks. I see it is simply something that needs done.  I do believe the technology works. That's where it's really needed. The third world is the place where DYI-based deployment can be blazingly fast.  And les Abricots, where I'm headed is a very nice place to be, with such nice people it really makes you wonder where the rest of the world went wrong.  I have friends there, I can help, and can have a good life to go along with it, is all.  After all, the place is also called "Paradis des Indiens" because the indian natives believed that was the place where good souls went to rest.

As for the documentation, imho there is NO documentation for the moment, it just is scattered in too many places and riddled with riddles.  I know we don't understand what makes it work, but does it really matter if there is a working device?  An easy to follow, step by step pdf build guide is all the world needs right now to get an energy revolution going. And I cannot understand why it hasn't been done yet, as complete written documentation is the scientific way of doing things.  I am not angry, but I just don't get it.  The theoreticians can keep arguing while the first generation of generators are built, and you can rest assured some tinkerer deep in the Sahel desert or the mountains of Cambodia will find a more efficient, easier to build configuration.  Poverty does make one resourceful. 

Enough rambling...  I will start coiling the SR193 coil today, using the incomplete documentation he left for posterity.  Oh well... Will do my best.

m:o)

Grumage

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #18 on: March 03, 2013, 07:36:37 PM »
Hi tika,

I wholeheartedly agree with your sentiments. We do need to be free from the fetters of establishment. Politcs aside, I think that the circuit posted below seems to embody all the aspects required for a working machine. What do you think?

Overschuss

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #19 on: March 03, 2013, 08:00:40 PM »
I will add a high performance opamp (an    OPA4350UA) that will give me the drive I need.

I personally prefer a BUF634T, because it's fast and has a higher output current. The price is roughly the same.
Good luck for your Project - and Success !

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #20 on: March 03, 2013, 08:27:02 PM »
I personally prefer a BUF634T, because it's fast and has a higher output current. The price is roughly the same.
Good luck for your Project - and Success !

It does seem to kick a a nice punch, but in this particular case, I need a single supply rail to rail amplifier.

m:o)

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #21 on: March 03, 2013, 08:34:56 PM »
Hi tika,

I wholeheartedly agree with your sentiments. We do need to be free from the fetters of establishment. Politcs aside, I think that the circuit posted below seems to embody all the aspects required for a working machine. What do you think?

I don't know... It looks like the SR193 coil, but as is, the relay in the upper right corner would make a lot of noise and not last very long at any frequency... 

Are these caduceus coils there ? If they are they are connected to what seems like the 50Hz modulation... No, this plan does not make any sense and there is too muck information missing.  The coil information may be right, but who knows?

m:o)


baroutologos

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #22 on: March 03, 2013, 09:04:32 PM »
Most of us, in this room are either pursuing/have pursued FE for hobby/ search of the arcane or for commercial reasons.
You claim, on the contrary Tika, you want to solve a real problem as the lack of electricity in your village. Is the cost of the diesel fuel for the generator that limits its electricity availability?


If the answer is yes, consider running that generator from other energy source as biofuels as woodchips or even grass.
Woodgas coversion of woodchips (biofuels) is an art in itself, provides sustainability, etc etc. of course other renewable energy sources can be used (better) as photovoltaics or wind generators, but their initial cost is considerable even for developed contries.


Your best bet to deal with energy availability is REAL terms, in REAL life for many KWs, at LOW cost, using a RENeWABLE /easily available resource, at a low to moderate investment cost is to master the woodgaz technique in my humbvle oppinion. Pursuing this FE movement in order to solve your today (or even tomorrow) needs is like chasing ghosts for a living :P


and bear in mind free energy is nothing but free..

a.king21

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #23 on: March 03, 2013, 10:20:08 PM »
Ferrite:  A good source of ferrite is in the yoke of an old style crt tv or montor. Most people are throwing these away so you should be able to get  a sufficient quantity for free. You then crush the ferrite up and make whatever form you need.

Overschuss

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #24 on: March 04, 2013, 12:22:40 AM »
It does seem to kick a a nice punch, but in this particular case, I need a single supply rail to rail amplifier.

m:o)


@tika


What do you think about a LM6321 then ? It has a (also a single) supply Voltage from 4.75 to max. 36 Volt. Available, e.g. at eBay (from China or UK) for ~ 7 US $.




tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #25 on: March 04, 2013, 12:40:56 AM »
Most of us, in this room are either pursuing/have pursued FE for hobby/ search of the arcane or for commercial reasons.
You claim, on the contrary Tika, you want to solve a real problem as the lack of electricity in your village.

There are also those who claim doing it for the betterment of mankind, I am not the only one pursuing that goal as stated here: http://www.overunity.com/, or am I reading it wrong ?
My other stated goal is to help others in _this_ community.

Quote
Is the cost of the diesel fuel for the generator that limits its electricity availability?

If the answer is yes, consider running that generator from other energy source as biofuels as woodchips or even grass.
Woodgas coversion of woodchips (biofuels) is an art in itself, provides sustainability, etc etc. of course other renewable energy sources can be used (better) as photovoltaics or wind generators, but their initial cost is considerable even for developed contries.

Your best bet to deal with energy availability is REAL terms, in REAL life for many KWs, at LOW cost, using a RENeWABLE /easily available resource, at a low to moderate investment cost is to master the woodgaz technique in my humbvle oppinion. Pursuing this FE movement in order to solve your today (or even tomorrow) needs is like chasing ghosts for a living :P

and bear in mind free energy is nothing but free..

I understand your kind warning. 

My budget is less than 400€.  That's no more than the average price for a prototype at this level of complexity.  I already had all the tools necessary before starting this project, and a small components stock. 

Here's a fairly accurate article from Wired about electricity in Haïti: http://haitirewired.wired.com/profiles/blogs/powering-lights-and-progress-in-haiti

Here's my estimate of the power output needed, in the near future.  Population in les Abricots is about 24.000, there are now about 200 homes with a hookup, and the diesel generator was giving out 20kW when new.  Electricity is now used to charge cell phones and run one or two CFL bulbs in each home.  There is no way that in the near future the average family budget will allow buying fridges and the likes, the minimum wage there being 80 euros/month.  So each kW would bring light to around ten homes, and that figure is unlikely to change for the next two to three years.

For more isolated homes, even 1kW is way too much power at this time.  So I am pursuing other avenues, such as recycling/recharging alkaline batteries, learning to build crystal, earth and concrete cells.  I am also stocking up on SMD LEDs that can be locally assembled in light 'bulbs', which will be adapted to the power source. 

I do understand true wattage in FE is elusive, as I started taking a keen interested in this topic about ten years ago now.   I just did not have the time to experiment then.  I understand also that the only real use I could get from such a generator is brightly lighted lamps fed with cold electricity.  But that is exactly what is needed now, cooking heat is also needed, but that is less urgent, at least in the part of the country I'm interested in. 

A very important fact is that there is no existing equipment that need large amount of 'standardized' power, except for the school's computer room, which is already self-sufficient and funded. 

Right now, I already have something to take with me there, a combination of crystal and/or earth cells with easy to build, cheap joule thieves using small air coils. 

I have been involved professionally in electronic design since 1990, I am also familiar with high frequency circuits and their peculiarities (I was a radar technician in the french navy in the early 80s).  I am now unemployed like many here in France, where the economic situation is getting worse by the day.

So why shouldn't I take the chance of building a 400€ (max) prototype that could enable kids to study after 6pm, when it gets dark?  I figure that since I have the time, technical knowledge, and the means to do it, trying my best to give more is not such a big risk to take.  In fact, not doing anything would be riskier.  And it's fun, too!

The project is not commercial, as my intent is to bring whatever knowledge I have gained from these experiments and help young people to have some sort of economic activity by passing along the information and help them start their own small businesses.  As for my own financial well-being, I don't really need much, and I have skills and experience I can exploit as needed, and also a large network of family and friends I can count on in Haïti. 

m:o)

tika

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #26 on: March 04, 2013, 01:45:16 AM »

@tika


What do you think about a LM6321 then ? It has a (also a single) supply Voltage from 4.75 to max. 36 Volt. Available, e.g. at eBay (from China or UK) for ~ 7 US $.

@overschuss

It is a nice op amp, but does not have not rail-to-rail output.  Also, it is a single op amp, the OPA4350 is a quad, which will allow me to create a virtual ground output, thus faking AC outputs over the entire range.  Placing a cap in series will not work well over such a frequency range, as the cap will react with stray losses in the circuit and create a filter.

A large output current is not that important, as this device is intended to find resonant frequency and the outputs will be in series with a 4.7k to 10k resistor.  Also, beware of the (smaller) print in the datasheet, if you ever intend on using this opamp on a +-15V dual supply some day, as there is a +-7 volts max limit between input and output voltage, that indicator "Input to Output Voltage" is actually the parameter that indicates non rail-to-rail outputs.

Op amp selection is always a delicate operation and, before Internet, it could sometimes take a couple of  days to find the right component as it would involve reading data sheets from really thick catalogs, from different vendors.

Also when large power is needed, there is always this technique, which is very efficient, but does not protect the op amp from a dead short, unless a base transistor is included, that will not influence the rest of the circuit, though. You also need to select the right transistors for high frequency operation, it is not rail-to rail, but will get quite close to the supply voltages.  The trick is to include transistors in the feedback loop.  Works for simple buffers, and positive gain amplifiers too.

m:o)


baroutologos

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #27 on: March 04, 2013, 10:18:50 AM »
@ Hello tika,


you seem fully aware in your goals set, and determined to pursue them. Then i can only applaud your effort, plus you would enrich this forum with high grade technical know how. :)


Cheers,

a.king21

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #28 on: March 04, 2013, 12:41:00 PM »
@overschuss

It is a nice op amp, but does not have not rail-to-rail output.  Also, it is a single op amp, the OPA4350 is a quad, which will allow me to create a virtual ground output, thus faking AC outputs over the entire range.  Placing a cap in series will not work well over such a frequency range, as the cap will react with stray losses in the circuit and create a filter.

A large output current is not that important, as this device is intended to find resonant frequency and the outputs will be in series with a 4.7k to 10k resistor.  Also, beware of the (smaller) print in the datasheet, if you ever intend on using this opamp on a +-15V dual supply some day, as there is a +-7 volts max limit between input and output voltage, that indicator "Input to Output Voltage" is actually the parameter that indicates non rail-to-rail outputs.

Op amp selection is always a delicate operation and, before Internet, it could sometimes take a couple of  days to find the right component as it would involve reading data sheets from really thick catalogs, from different vendors.

Also when large power is needed, there is always this technique, which is very efficient, but does not protect the op amp from a dead short, unless a base transistor is included, that will not influence the rest of the circuit, though. You also need to select the right transistors for high frequency operation, it is not rail-to rail, but will get quite close to the supply voltages.  The trick is to include transistors in the feedback loop.  Works for simple buffers, and positive gain amplifiers too.

m:o)
Is your choice of npn and pnp transistors in  the output stage to prevent a ground loop?

zcsaba77

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Re: A Kapanadze generator replication - Febuary 2013
« Reply #29 on: March 04, 2013, 12:57:24 PM »
Hi tika,

I wholeheartedly agree with your sentiments. We do need to be free from the fetters of establishment. Politcs aside, I think that the circuit posted below seems to embody all the aspects required for a working machine. What do you think?

Hi Grumage

On top showed transformer (colored coil) which one in the circuit diagram? where is roman number or bottom one?