This forum is preserved as a permanent archive. The community continues at eMedia Press.

Announcement

Collapse
No announcement yet.

Donald L Smith

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • h2ocommuter
    replied
    Little help

    Originally posted by dragon View Post
    My take on it would be to use a capacitor and match the output transformer inductance to the cap for 60hz.

    You simply reverse the process from the beginning and match the resonance through the system....

    Match the cap based on the NST, find L2's self resonance, design L1 coil inductance to resonate with L2 based on the NST cap value. Reverse the process by matching the cap to L2 resonance then design a step down transformer( L3/L4 ) where L3 is resonant at 60 hz based on L2 capacitance.

    Sounds easier than it is....
    Hi Dragon,
    I like the cenerio you have stated, seems practical.

    I am trying to figure out the values for my Caps. Anyway, the isolation transformer input side is .113 H takes a 75 ohm resistor and is scedueled for a cap farad value of about .000016 to be in resonance.
    I believe the resonance for my globe and 14 turnes of my L-2 is arround 28K cps . It is 30' long. I built a calculator to figure out Dons formula's "Attachment", and I am wondering about the joules content I should concern myself with. could you take a look and see if it helps you?
    sorry the sight won't allow excell downloads.
    OK, so I was figuring I needed to concider the joule content of the caps as a main concern. what are your thought related to this?

    Thanks
    h2ocommuter

    Leave a comment:


  • h2ocommuter
    replied
    eeks

    Originally posted by baroutologos View Post
    I saw what i saw. He is clearly stating at the videos that you correct the frequency in order transformer to work by applying the resistor.
    ( try a standard iron transformer to work at 30Khz. losses too large i can say)

    We should not be that unscertain of what we see and hear nowadays.

    Baroutologos
    Foot in the mouth again.
    I am a rooke, I should keep my mouth shut when it comes to this science.




    No offence intended, Baroutologos
    h2ocommuter

    Leave a comment:


  • dragon
    replied
    Originally posted by baroutologos View Post
    I saw what i saw. He is clearly stating at the videos that you correct the frequency in order transformer to work by applying the resistor.
    ( try a standard iron transformer to work at 30Khz. losses too large i can say)

    We should not be that unscertain of what we see and hear nowadays.

    Baroutologos
    My take on it would be to use a capacitor and match the output transformer inductance to the cap for 60hz.

    You simply reverse the process from the beginning and match the resonance through the system....

    Match the cap based on the NST, find L2's self resonance, design L1 coil inductance to resonate with L2 based on the NST cap value. Reverse the process by matching the cap to L2 resonance then design a step down transformer( L3/L4 ) where L3 is resonant at 60 hz based on L2 capacitance.

    Sounds easier than it is....
    ________
    Last edited by dragon; 01-19-2012, 03:37 AM.

    Leave a comment:


  • baroutologos
    replied
    I saw what i saw. He is clearly stating at the videos that you correct the frequency in order transformer to work by applying the resistor.
    ( try a standard iron transformer to work at 30Khz. losses too large i can say)

    We should not be that unscertain of what we see and hear nowadays.

    Baroutologos

    Leave a comment:


  • h2ocommuter
    replied
    Pictures/ coment.

    Originally posted by baroutologos View Post
    Thnaks h2ocommuter for the input.
    By the way, this is a mains transformer. main is already 60cps.

    Nevertheless, i placed a lamp of 40 watts at 220 volts (1200 ohms more or less) and saw no difference. Ok my DMM is not the best at measuring low freqs but something i could have seen.

    If you do not bother, can you post the nomograph?
    Could you try yourself to see if there is a "resistor/inductor frequency correctance method?

    If not, why believeing in Don Smith in the first place?

    Baroutologos
    I do not believe Don is stating we would be changing the freq. I believe he is stating when using the nomograph we are setting the resonance of the system only. That is if we incorporate the capacitors as dictated also by the nomograph.
    Furthermore I believe he is stating if we use the other formula voltage desired /capacitance in uF = CPS "the speed and carring value necessary to accomplish the task"

    Nuf said.

    Ok I have some pictures validating the graph, and validating the readings.
    These pictures clearly show why a digital model would be best.

    h2ocommuter.
    Attached Files
    Last edited by h2ocommuter; 12-05-2009, 08:35 PM.

    Leave a comment:


  • dragon
    replied
    Originally posted by baroutologos View Post
    OK, those charts show at x axis the different values of L and C for resonance (0 ohms reactance) at various frequencies, and above that all the possible combinations of C and L and their resulting impedances at various frequencies (again)

    Who said, that can work backwards?? i.e. by putting a resistor (thus simulating reactance) in series or parallel to a C or L you can manage to have an desired output frequency?


    Baroutologos
    I don't see any way that resistor will change frequency, as I said before there may be missing or mis information in anything that is on the net. I wouldn't focus on that resistor in as much as what he might have been trying to accomplish throught the system overall. There are many different ways of lowering the frequency and I don't believe that is one of them. Think of it a a diversion. I believe it was even stated on one of the documents that because of contractual obligations and fear that the information was intentionally incomplete. You have to look at it as a bunch of clues in a large puzzel, you have a few good pieces that fit, some that don't belong and others that are missing. Look at the basics, fit together what makes sense, remove the stuff that doesn't fit, and follow a logical path to find the missing parts.
    ________
    Last edited by dragon; 01-19-2012, 03:37 AM.

    Leave a comment:


  • baroutologos
    replied
    OK, those charts show at x axis the different values of L and C for resonance (0 ohms reactance) at various frequencies, and above that all the possible combinations of C and L and their resulting impedances at various frequencies (again)

    Who said, that can work backwards?? i.e. by putting a resistor (thus simulating reactance) in series or parallel to a C or L you can manage to have an desired output frequency?


    Baroutologos

    Leave a comment:


  • dragon
    replied
    Here is the one Don is refering to I believe.. RF Cafe - Frequency - Reactance Nomograph

    This one will print on a regular sized printer sheet....
    ________
    Last edited by dragon; 01-19-2012, 03:36 AM.

    Leave a comment:


  • dragon
    replied
    There is one here http://www.sphere.bc.ca/test/slideru...se-200ee-b.jpg that could be printed out and used to find the values.
    ________
    Last edited by dragon; 01-19-2012, 03:36 AM.

    Leave a comment:


  • h2ocommuter
    replied
    Details details.

    If you do not bother, can you post the nomograph?
    Could you try yourself to see if there is a "resistor/inductor frequency correctance method?


    Baroutologos,

    Wow I have looked all over the place to get a good nomograph that is digital, without luck.

    I guess I can take a pic. and attach it. I give it a try.

    I read the book a couple of times, but my verbatim is trashed. I will look it up and Pictures or copy it for effect. try to get it out quickly.

    I am so ignorant or the mathskills and the electrical engineering lingo it is embarrasing.

    OK the book reguards this nomograph as a resonant tuning chart only.
    I am not stupid but you guys could make more sence of what is in it than I could.
    heck I only paid like 3 to 6 bucks for it used pluss a couple dollars shipping..

    I revisited Dons writing again, with a fresh Doc for clarity. Exactly the same.
    Just as you, I felt Don was using this as the frequency adjuster. Oh no, Look again at the writing.
    We go to the nomograph to get all the resonant parts for our build! It is right there. We are choosing the values from the start, " the Isolation transformer". Draw the line, Choose the resistor, Now you know the capacitance.... It was like he was telling us point blank and we did not see it.
    OK so reading the L of the input side gives us the Farads and the Resistance. period. THIS IS ONLY A RESONANT TIMMING CHART FOR THE ISOLATION TRANSFORMER.. Again it is telling us the Capacitor value and the reistor value from the L of the IT. that is it!

    If I am right Don is suggesting that we are not to reduce the freq. comming out of the Isolation Transformer. It seems to me he is associating this energy like a radio freq. in that, the places carrier waves can be used. these carrier waves carry many other frequencies. "I know nothing about that either", So if Don is correct, we are not squeesing back down the freq to achieve the 120 CPS. we are using the nomograph to set the LCR and time constant of the circuit. Kind of like using a carrier wave association to resonance.

    Don is gooood hug: humbly speeking. he never said we were changing the freq to somthing else. I guess we are stabilizing it.

    Is this making any sence?

    I'm gona ad this to my PDF
    Last edited by h2ocommuter; 12-05-2009, 04:56 PM. Reason: spelling, revamp

    Leave a comment:


  • baroutologos
    replied
    Thnaks h2ocommuter for the input.
    By the way, this is a mains transformer. main is already 60cps.

    Nevertheless, i placed a lamp of 40 watts at 220 volts (1200 ohms more or less) and saw no difference. Ok my DMM is not the best at measuring low freqs but something i could have seen.

    If you do not bother, can you post the nomograph?
    Could you try yourself to see if there is a "resistor/inductor frequency correctance method?

    If not, why believeing in Don Smith in the first place?

    Baroutologos

    Leave a comment:


  • h2ocommuter
    replied
    Got the books

    Originally posted by baroutologos View Post
    Ok, i managed to make a small experiment.

    I took a standard 220/30 volts trasformer (windings are isolated) and at input side i connected a resistor in parallel. Transformer specs is
    * primary winding 16 ohms resistance, 1.692 H
    * secondary below 1 ohm, 27.6 mH

    1st try was to connect a 18KOhm resistor and measure output frequency.
    2nd try 1Mohm resistor.

    Even though are blind resistor values, no deviation in output frequency was measured by my DMM.
    ...

    So, how the f... Don Smith claims he "corrects" the frequency by the application of the transformer's L a parallel R?

    Anyone having the chart and willing to do some more detailed measurments have a signal generator?

    Baroutologos

    Hi Baroutologos,
    Looking in the Tables and formulas book Don suggested I bought used.

    OK I am looking at the reactance chart for 1 Hz to 1 kHz. Anyway I took the * primary winding 16 ohms resistance, 1.692 H, and drew the line to 120 CPS it says .0012 megohms as close as I could get it.
    I did not add or subtract the Resistance you allready have.

    Hope this helps.

    h2ocommuter

    Leave a comment:


  • baroutologos
    replied
    @dragon,

    Excellent said!

    Baroutologos

    Leave a comment:


  • cody
    replied
    Since it dosnt appear to be easy to calculate the resistor needed, maybe you could try a potentiometer so you have a variable resistor to play with.

    Leave a comment:


  • boguslaw
    replied
    Look at Kapanadze videos for actual exhibition of working device then return back to Smith device.He seems to use the same concept,but he stores energy temporarily in capacitors.I'm quite sure that most of electrons are in capacitors forever, or they could be if reverted back in clever way.They flow from one terminal to the other.Smith found a magic one-way pump.In his capacitor electrons just flow from one terminal to the other - there is ALWAYS imbalance of electrons - contrary to capacitors in normal circuits.Then he "turn knob" and capacitor is already charged instantly (because they are not polarized ones, self-heeling)

    Leave a comment:

Working...
X