Author Topic: Stan's Resonant Frequency  (Read 39447 times)

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Re: Stan's Resonant Frequency
« Reply #48 on: January 05, 2011, 16:35:59 pm »
Hi Tony,

What you are measuring with this particular setup is giving you sort of false reading. By using the primary as a sensing coil, you will only see the primary in a freewheeling effect. It is well known in the art that pulsing a transformer will always output an AC signal no matter which side is pulsed. So, in affect, your sensing coil is botching your experiment and true measurements. It is possible to measure without the sensing coil and just using chokes by using a suitable shunt resistor on the negative plate. You may have to calculate, though, to get the real numbers. A resistor will work with both the oscilloscope and any voltage meter, but you may want to research on the web the best way you can find to accomplish the task. I myself do not have an O scope but this is what I use for measuring high voltages from 10-30Kv...

(http://www.electronicrepairguide.com/high%20voltage%20meter.jpg)

I got one off eBay for 20 USD...

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Re: Stan's Resonant Frequency
« Reply #49 on: January 05, 2011, 16:56:09 pm »
no im able to take measurement straight from the chokes and cell, I was just using the feedback to compare the cell signal with the feedback signal and they are identical. The voltage from the chokes are like i said just over 400VAC and the voltage on the feedback is usually only 25VAC. Im not taking any measurements from my feedback, all measurements are coming from the chokes and cell.

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Re: Stan's Resonant Frequency
« Reply #50 on: January 05, 2011, 17:35:04 pm »
Cool. Have you tried with very pure water? You can use a resin filter. Is not expensive, just need to find where you can buy it. Normally they sell this resins where they sell bi distilled water or osmotic filter... Will cost you maybe 10 or 20 dollars.


If you are getting more current and voltage on the output means that this is resonance, means that you are having 55ma recirculating thru your tank so you have a Q factor of around 40. Very interesting.


Could you make a more detailed video explaining all the connections, measurements and describing your components like the input transformer...?


Br

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Re: Stan's Resonant Frequency
« Reply #51 on: January 05, 2011, 17:37:10 pm »
That diode on the scr could be the responsible for the AC. HAve you tried without it?

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Re: Stan's Resonant Frequency
« Reply #52 on: January 05, 2011, 17:38:33 pm »
in my setup I don't have the diode across the SCR as its not really needed.

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Re: Stan's Resonant Frequency
« Reply #53 on: January 05, 2011, 17:41:03 pm »
Have you checked the blocking diode? If still blocking?

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Re: Stan's Resonant Frequency
« Reply #54 on: January 05, 2011, 17:53:00 pm »
Yea the diode is blocking and everything is working properly.

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Re: Stan's Resonant Frequency
« Reply #55 on: January 05, 2011, 21:05:18 pm »
Ok.


Tony do you know the resistance and inductance and mutual inductance of the coils? And that of the water when you have straight DC?


I never got this behavior, for me to put 400v on the pure water here i'm spending at least 60w on the pulsing circuit. I'm very interested that you got the resonance in the sense that you have more energy recirculating while spending so small watts.


Sorry for so many questions i'm very curious.


Thanks again