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Author Topic: RESONANCE EFFECTS FOR EVERYONE TO SHARE  (Read 297230 times)

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #60 on: December 17, 2008, 02:24:31 AM »
.

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #61 on: December 17, 2008, 02:39:12 AM »
Hi everyone,

I just uploaded a new video :)

I ask for your input to help solve what I maybe missing in my way of measurement in this test as I seem to be able to charge a 12,000uf cap bank (with 10 ohm load attached) to 3.12vdc in one second and cannot measure any current draw to achieve this ???

Video: http://www.youtube.com/watch?v=ETZaMrnIwxk

Thanks for your time.

Luc

Umm. Ok. Aren't you just measuring the current draw of the logic and switching circuits? Isn't the charge current coming from the one cap being maintained at 50 volts, going thru the bridge and the coil? So the energy to charge the 12000 mfd cap isn't coming thru the AC ammeter?
Am I seeing this correctly? Could you post a clear drawing of the whole circuit including the meters and caps and variac and all?

Also I can't figure out why my bridge works, since I didn't rewire the 4013. Did I make a lucky mistake?

ramset

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #62 on: December 17, 2008, 02:39:12 AM »
TinselKoala
Sweet ,nice build [rats nest?? I don't think so]
Thanks for the pic's
Chet

Groundloop

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #63 on: December 17, 2008, 07:20:44 AM »
@TinselKoala,

The first version did use both flip/flop in the 4013. The second version uses just one flip/flop.
The first version did self oscillate sometimes due to noise. It is recommended to wire the 4013
as shown in the newest drawing.

Nice looking unit you made. :-)

Groundloop.

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #64 on: December 17, 2008, 12:35:55 PM »
Thanks, I nearly went blind soldering the SOICs. Or maybe it was the cheap rum...

I can't get mine to misbehave, at least with the loads (resistive and inductive) loads and freqs ( <1 Hz to ~300 kHz) that I've tried so far. So I think I'll just leave the flip-flops as they are. Perhaps the extra caps I put in prevented the self-oscillation, or perhaps the different driver chips made a difference.
One each 100 nF cap across Vcc and ground, close to the pins of the IR 210x chips, and also the 100 nF on the 4013 should be as close to the chip as possible.
I'll be pushing the circuit considerably harder today. We'll see. I've got plenty of chips...
 ;D

gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #65 on: December 17, 2008, 04:38:32 PM »
Hi TinselKoala,

thanks for taking the time to share your finished product ;)  it looks 8) good.

Have you tested with different input voltages yet?  the reason I ask is, the one I built has a current draw from the switching side input voltage even though I have no load connected to the output ???  Can you confirm if yours is doing this. Also note that if your signal generator is at 1Khz the switched output is at 500hz, so half. I have a 26ma draw with no load on output using 50vdc at input switched at 350Khz which means my S.G. is at 700Khz.

If you can check this for me that would be great.

Thanks for sharing.

Luc

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #66 on: December 17, 2008, 05:07:00 PM »
I'll have to check later today.
But I do know this much: the logic and switching side of my unit seems to draw about 25-30 mA when the unit is quiescent--so that is in line with your measurement. But this draw is from the power supply to the logic, not from the bridge side (I think.)

gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #67 on: December 17, 2008, 05:28:32 PM »
I'll have to check later today.
But I do know this much: the logic and switching side of my unit seems to draw about 25-30 mA when the unit is quiescent--so that is in line with your measurement. But this draw is from the power supply to the logic, not from the bridge side (I think.)


Hi TinselKoala,

thanks for the quick reply. I know of the draw on the logic side but I'm surprised of a draw on the switched side when there is no load connected to the output ???  so that is what I'm interested in.

Thanks for sharing

Luc

gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #68 on: December 17, 2008, 08:36:30 PM »
Hi everyone,

I just uploaded a new video to which is demonstrating a better effect.

I must say that I'm surprised and disappointed at the lack of replies of my previous video :( ... Zero!... not even one post or comment from here.

I thought we were all looking for a way to use a small amount of power and make more ???

Maybe everyone here knows how to do this and I'm just not aware of it.

If this is the case! then this will be my last post on this topic and I'm sorry to have wasted your time and my time to share.

New video: http://www.youtube.com/watch?v=LBTSSHYrRJM

Peace and Love to All

Luc

armagdn03

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #69 on: December 17, 2008, 09:31:40 PM »
Couple things to consider

1) I don’t know if you still have a capacitor in series with those coils, but it’s not necessary, they have distributed parasitic capacitance already.

2) Are both coils at their own resonant point? seperate? is there one shared? Output will go up significantly if both coils are identical


And last but not least, a suggestion on what to try next.....put two pickup coils on the same large coil, then measure.
Also, make bridge rectifier out of switching diodes, try to run small motor.


well done.

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #70 on: December 17, 2008, 09:34:14 PM »
Huh? I replied to your video, above...but you didn't answer my questions. ??

I just checked my unit with the following parameters:
Logic power from a 11.4 volt battery--draws 26 milliamps when quiescent, a little more when working.
Bridge power from an HP benchtop supply, 50 volts DC, current limited at 100 mA.
No load on bridge. (I disconnected my LEDs for this test.)
Clock from a function generator, square wave, 700 kHz.

Current draw from bridge supply: 30-40 mA, depending on frequency. The draw is very small at low freqs, peaks at around 300 kHz, goes down, then peaks again at 700+ kHz.

So I am confirming your result, but I can't explain it, unless we are experiencing "shoot-thru" or some other weird leakage phenomenon. But I thot the driver chips were supposed to prevent that. Oh well.

Groundloop

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #71 on: December 17, 2008, 09:48:18 PM »
Luc,

Thank you for making the video. It is a great video and it clearly demonstrate what we where talking
about in private mails. It seems to me that your circuit (two coils) is outputting more Watt than
you are providing to the circuit. I have one question, it is possible to do the same test at 12 volt
input level? Then you can use the input voltage to also deliver power to the switched side. This will
give us an idea on how much the circuit is using at total compared to the total output. I ask because
the two diodes at the IR2103 is connected to the switch output side and may inject power to your
output, thus adding to the result. It may not be so but I think it is important to check that also.

You are doing a great research with this circuit and you should keep posting your results even if there
are few replays to you posts. Keep up the good work. Now that there is a replica (Tinsel Cola) I bet
he can confirm many of your findings.

Regards,
Groundloop.

gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #72 on: December 17, 2008, 09:58:50 PM »
Huh? I replied to your video, above...but you didn't answer my questions. ??

I just checked my unit with the following parameters:
Logic power from a 11.4 volt battery--draws 26 milliamps when quiescent, a little more when working.
Bridge power from an HP benchtop supply, 50 volts DC, current limited at 100 mA.
No load on bridge. (I disconnected my LEDs for this test.)
Clock from a function generator, square wave, 700 kHz.

Current draw from bridge supply: 30-40 mA, depending on frequency. The draw is very small at low freqs, peaks at around 300 kHz, goes down, then peaks again at 700+ kHz.

So I am confirming your result, but I can't explain it, unless we are experiencing "shoot-thru" or some other weird leakage phenomenon. But I thot the driver chips were supposed to prevent that. Oh well.

Hi TinselKoala,

sorry!... you are right ;)... okay then, one reply to the last video. I was talking more of the other members of this Forum that have not posted. What's up guys ???

Thank you TinselKoala for taking the time to test this for me. That is what it does for me also, less draw as the frequency lowers and more as the frequency raises. I have not noticed the peak at 300KHz and back down again. I'll check that out.

I'll look at your question I didn't answer yet and see if you still need the answer. Sorry about that, I must of been cough up in experiments ;D

Thanks for sharing

Luc

Cap-Z-ro

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #73 on: December 17, 2008, 10:15:26 PM »

Hey Luc,

Please do not stop  posting your results...I, and I dare say many are following your work avidly...check out the number of views this thread has.

The whole world now knows you though your work...I did not want to clutter your thread, so I just observed from the sidelines.

Your work is important...keep the faith.

Regards...


gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #74 on: December 17, 2008, 10:34:00 PM »
Couple things to consider

1) I don’t know if you still have a capacitor in series with those coils, but it’s not necessary, they have distributed parasitic capacitance already.

2) Are both coils at their own resonant point? seperate? is there one shared? Output will go up significantly if both coils are identical


And last but not least, a suggestion on what to try next.....put two pickup coils on the same large coil, then measure.
Also, make bridge rectifier out of switching diodes, try to run small motor.


well done.

Hi armagdn03,

Thanks for your past posts, help and support.

I do have a 250pf in series for the 2 coils to which are also in series. I tried it with 125pf but it gave better results with the 250pf.

I took allot of time to tune both coils to be the same. The way I did it is, my first coil was .600mH so I winded the next to .650, so it is more then the first and connected it to the exact frequency and capacitor of the first and slowly removed wire till it behaved like the first one. I don't know if this is a good way to do it but that is what came to mind.

I tried both coils in parallel at first but had no good results until I tried them in series. So I'm thinking that maybe a longer coil would give a better output. I'm also wondering ::) about geometry of coils if that would also have a better result ???  so many things to test :P

I'll also try it with multiple pickup coils as you suggest and next video I can make a better show with lights and motors ;D  I just had to start with the resistors to satisfy the measurement minded ones.

Thanks for sharing

Luc