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Author Topic: RESONANCE EFFECTS FOR EVERYONE TO SHARE  (Read 298229 times)

najman100

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #195 on: December 23, 2008, 09:33:04 PM »
@Najman100,

Looks great. :-)

But why trim the PCB? I designed the PCB so that you can mount the transistors
two ways. One, standing up and mounted to a heat sink. Or, lying down bolted to a L shape
alu. profile. Then the Alu. profile can be bolted to a bigger heat sink.

I some cases the user want to use a low load and then the PCB itself will be the heat sink.
That is way I have copper under the transistors. Same goes for the 7805 regulator. The PCB
will be the heat sink.

@TinselKoala,

You can always add a couple of wires to get your LED display. I did not put in anything extra
because I want the circuit to use as little power as possible.

Groundloop.




i did that for 2 reasons one is for the heat sink second for making 4 pcbs from the same pcb boaed i could not find bigger an di do not want to wist 3 board so  with 2 i will have 8 .6 for all of us and 2 in case i fkup in the process .
Najman 

Groundloop

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #196 on: December 23, 2008, 09:49:32 PM »
@najman100,

I understand. Your doing a great job. :-)

Groundloop.


Chris31

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #197 on: December 23, 2008, 10:10:15 PM »
@Chris31,

If you have tested this and find that it will protect the mos drivers, then why not.

Can you make a simple drawing and post it here?

Although Transient Voltage Suppressor (TVS) will do a wonderful job of protecting mosfets, they also kill any over unity
in the circuit, I think? Better blow some transistors and get over unity results than have a stable circuit that runs forever
without any o/u. Please share your thoughts about this.

Groundlop.

Hi

Its easier for me to show a link of a circuit based on an IR bridge driver. Although its not using the same part number but it essentially (should  ;D) have the same drive circuitry.

http://www.molla.org/DIY-CDI/SC-DIY-CDI-article-hires.pdf

If you check out the inverter circuit, you will see pin 6 of the chip is connected to a 22ohms, 22k and a diode. On my circuit Im only using 22ohms + diode. The article I read says to add 22ohms resistor, I did that and it seems to work fine, being a bit too cautious I added the diode as well anyway. I couldnt find the apps note, I remember reading it saying it was from IR and/or motorola.

Im using IR2109 on my CDI, without the resistor it kept blowing up.

As for the TVS protection, you are right, thing is when I set mine up thinking the internal diode across was enough the circuit was blown within 5 seconds. Powered by 340V DC rectified mains driving an ignition coil result is dead transistors + drivers within 5 seconds, those transistors are not cheap  :(

Well I dunno what to say really, I guess its better to protect them first so you can get the hang of it, once you feel the circuit is running well and all tuned up, you can always remove the TVS one by one to see if you gonna get OU  ;)

Worst thing is, circuit kept blowing up and you could hardly perform any test, it could be very off putting.  ???

Chris31

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #198 on: December 23, 2008, 10:17:55 PM »
I agree about the TVS potentially killing the "interesting" effects.
I usually put an additional fast diode across the source and drain of each mosfet, even though they have internal diodes, to channel the flyback pulse away from the transistor. But I feel the same way about these as I do about the TVS.
The driver chips are supposed to control the timing of the MOSFETS so that shoot-thru (both on) and no-current (both off) times are minimized. Other controller chips like the Intersil HIP 4081A have the capability to fine-tune these parameters.
There's some good stuff about power dissipation in MOSFET h-bridges in the Intersil application note:
http://www.intersil.com/data/an/an9405.pdf

Yes I seen those chips, but I like the IR products more for some reason ;D Plenty of flavours to choose from. One can also add diode+cap+resistor on the gate to increase the dead time.

Chris31

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #199 on: December 23, 2008, 10:27:00 PM »
Groundloop

Just a suggestion here,

I think there are alot of interest in this circuit, for easy replication, why not redesign for single sided PCB?

16F84 can be alittle bit expensive as well, why not use the more recent and common parts from microchip with ICSP for easy reprogramming?

Its probably too late now but maybe in the next revision, just a thought  8)

Groundloop

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #200 on: December 23, 2008, 10:34:09 PM »
@Chris31,

Thank you for providing the information. I think it will no problem for people
to solder components on the underside of the pcb. So I will leave it to
those that will replicate this circuit to use the extra components or not.

The new circuit does not use mostfets or mosfet drivers so I hope that
this circuit will behave better.

[EDIT] I just saw your resent post. Yes a single side pcb is ok. I have posted the
design files. I have checked that they will open in the new versions of Eagle. If you
want to hep out then just make a new single side board layout. It is too late for me
to do it now because I have already ordered the pcbs. I did not design in ICSP
because I want to keep the circuit as simple as possible.

Thanks,

Groundloop.

Chris31

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #201 on: December 23, 2008, 11:09:36 PM »
@Chris31,

Thank you for providing the information. I think it will no problem for people
to solder components on the underside of the pcb. So I will leave it to
those that will replicate this circuit to use the extra components or not.

The new circuit does not use mostfets or mosfet drivers so I hope that
this circuit will behave better.

[EDIT] I just saw your resent post. Yes a single side pcb is ok. I have posted the
design files. I have checked that they will open in the new versions of Eagle. If you
want to hep out then just make a new single side board layout. It is too late for me
to do it now because I have already ordered the pcbs. I did not design in ICSP
because I want to keep the circuit as simple as possible.

Thanks,

Groundloop.

Ok I got ya,

I wish I can replicate and help out, unfortunately Im still stuck in getting this plasma ignition controller. Well theres more to it, its more of a small engine ECU really. Based on 18F chip, it was my mistake for not researching hard enough, I could have use the ford EDIS module + camchaft position sensor and be done with most of it. Using pure assembly language was also a mistake LOL. Have just added ignition mapping using RPM + TPS value. I know Ill end up adding an injector too, its taking much longer than I thought  :(

Good luck and keep up the good work, I hope to join you guys soon  ;D

najman100

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #202 on: December 23, 2008, 11:39:45 PM »
first one is 50 finished here are the pics
Najman

TinselKoala

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #203 on: December 24, 2008, 12:13:45 AM »
A thing of beauty!

wattsup

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #204 on: December 24, 2008, 12:53:53 AM »
Wow, just got home to see you guys are really fast at the draw. I was late in posting this response to @groundloop but will put it anyways in case in rings some bells.

@groundloop

Thanks for explaining the two models.

What I am saying about the flyback is that if you are using let's say two 12vdc batteries in series so 24 volts to drive the coils via the transistors, then the flyback from the coils need a way to return back to the battery source.

What I have learned is the first rule of OU is to recycle as much energy from the source, back to the source. The more you can do this, the less you will rely on added OU coming from the coils and hence the more inclined the device will be to become an OU device.

This is a very interesting stage as I feel this is where the EE world and the OU world often clash. I am not trying to point to you in a bad way when I say this but it is part of our OUer reality that we try to understand the flyback phenomenon and USE it to our advantage, whereas we find that classical EEers look to buffer it out of existence. I have a feeling this is where some of the heat in the components is coming from. Flyback with no good home to return to. This one question or understanding is essential on both the EE and OU end of any project if there is to be both positive results and durable device function.

You can decide to forget the flyback, the flyback will never forget about you. It will always show its face at one time or another and wammo, fry them little suckers. We have seen this many many and many times before. Maybe this time, Tesla is standing by wondering if we will catch it or again be caught.

So, I know you are saying the transistor diode can handle it. For me this is EE talk. The OU talker is saying, hey, I don't want you to handle it, I want you to send it back to the source, period, no ifs ands or buts. This is where if both the EE and OU minds can come together, I know we will have some great results.

Every time I see one of @gotoluc's videos, I see them coils being pulsed and I am only wondering one thing, what about the flyback. I was hoping this thread would then get into the flyback discussion to figure out a strategy to USE it, before any mass circuits are made.

I have been around this forum long enough and have seen many many projects start and stop. When we start, we never think it will stop. We only think it will continue until success has been achieved. But something else I have seen on this forum and that is the dangers that happen once we see a project hit the fifth gear, full steam ahead only to bungle up, then no more momentum left to move forward. Guys, I have seen this enough and am telling you it may be time to take one step back, take a deep breath and think about this very carefully. I am not in a hurry to get a circuit. I can wait a little longer if it will make things 99% certain instead of what I feel is 70% certain right now.

@Najman100

Thanks. I will send you my coordinates. Don't  get me wrong. Regardless of what I say above, I am still an OUer and willing to try anything, but I would have hoped for @gotoluc's sake and ours that the question of flyback be addressed seriously with an honest effort now to accommodate it, rather then running the chance of realizing this afterward.

Whatever, you guys rock!!!!!!!!!!!!!!!!!!!!!

najman100

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #205 on: December 24, 2008, 01:07:13 AM »
Wow, just got home to see you guys are really fast at the draw. I was late in posting this response to @groundloop but will put it anyways in case in rings some bells.

@groundloop

Thanks for explaining the two models.

What I am saying about the flyback is that if you are using let's say two 12vdc batteries in series so 24 volts to drive the coils via the transistors, then the flyback from the coils need a way to return back to the battery source.

What I have learned is the first rule of OU is to recycle as much energy from the source, back to the source. The more you can do this, the less you will rely on added OU coming from the coils and hence the more inclined the device will be to become an OU device.

This is a very interesting stage as I feel this is where the EE world and the OU world often clash. I am not trying to point to you in a bad way when I say this but it is part of our OUer reality that we try to understand the flyback phenomenon and USE it to our advantage, whereas we find that classical EEers look to buffer it out of existence. I have a feeling this is where some of the heat in the components is coming from. Flyback with no good home to return to. This one question or understanding is essential on both the EE and OU end of any project if there is to be both positive results and durable device function.

You can decide to forget the flyback, the flyback will never forget about you. It will always show its face at one time or another and wammo, fry them little suckers. We have seen this many many and many times before. Maybe this time, Tesla is standing by wondering if we will catch it or again be caught.

So, I know you are saying the transistor diode can handle it. For me this is EE talk. The OU talker is saying, hey, I don't want you to handle it, I want you to send it back to the source, period, no ifs ands or buts. This is where if both the EE and OU minds can come together, I know we will have some great results.

Every time I see one of @gotoluc's videos, I see them coils being pulsed and I am only wondering one thing, what about the flyback. I was hoping this thread would then get into the flyback discussion to figure out a strategy to USE it, before any mass circuits are made.

I have been around this forum long enough and have seen many many projects start and stop. When we start, we never think it will stop. We only think it will continue until success has been achieved. But something else I have seen on this forum and that is the dangers that happen once we see a project hit the fifth gear, full steam ahead only to bungle up, then no more momentum left to move forward. Guys, I have seen this enough and am telling you it may be time to take one step back, take a deep breath and think about this very carefully. I am not in a hurry to get a circuit. I can wait a little longer if it will make things 99% certain instead of what I feel is 70% certain right now.

@Najman100

Thanks. I will send you my coordinates. Don't  get me wrong. Regardless of what I say above, I am still an OUer and willing to try anything, but I would have hoped for @gotoluc's sake and ours that the question of flyback be addressed seriously with an honest effort now to accommodate it, rather then running the chance of realizing this afterward.

Whatever, you guys rock!!!!!!!!!!!!!!!!!!!!!



i do understand your point of view but what i learned threw 6 month of intensive research on HHO that trial and error is the best thing in evolving and making thing better as every one is trying and experimenting we will acheive better designs .
if you want your pcb faster just pass by if not i will mail it to you .


Najman100

najman100

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #206 on: December 24, 2008, 01:08:23 AM »
Here is the first prototype and it cam close to perfect still have to make 5 more .
enjoy .

Najman100

gotoluc

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #207 on: December 24, 2008, 02:20:11 AM »
WOW!... Najman, you are a man on a mission ;D

Great job ;) thanks for doing this for all of us. I'll send you my address.

I was out today getting some sockets and other stuff to put together my 2nd board.

@Groundloop, I picked up a roll of 18ga. plastic coated wire to wind a test coil to see how well that kind of wire performs. Hopefully I have it done tomorrow and will give you an update.

@ramset, I received the extra amount I needed and the 6 batteries to do the self charge test are now bought: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=300281623770  thanks for your help.

@wattsup, I hear you brother ;)  as you know I'm not much of an EE, so you can rest assured that I will do my best to study the effect and not get too caught up in the ideal circuit ;D  I think we are on a good start and hope we can all work together.

Thank you all fro your time, efforts and sharing.

Luc



najman100

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #208 on: December 24, 2008, 03:00:58 AM »
WOW!... Najman, you are a man on a mission ;D

Great job ;) thanks for doing this for all of us. I'll send you my address.

I was out today getting some sockets and other stuff to put together my 2nd board.

@Groundloop, I picked up a roll of 18ga. plastic coated wire to wind a test coil to see how well that kind of wire performs. Hopefully I have it done tomorrow and will give you an update.

@ramset, I received the extra amount I needed and the 6 batteries to do the self charge test are now bought: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=300281623770  thanks for your help.

@wattsup, I hear you brother ;)  as you know I'm not much of an EE, so you can rest assured that I will do my best to study the effect and not get too caught up in the ideal circuit ;D  I think we are on a good start and hope we can all work together.

Thank you all fro your time, efforts and sharing.

Luc





Luc
today was hectic i received my signal generator ,whenyt to buy the pcbs then came back started printing etching and took appart my hydrogen cell cut new gaskets ans still waiting for my scope and the list keep on going .i will send you the pcb asap .


Najman100

Cap-Z-ro

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Re: RESONANCE EFFECTS FOR EVERYONE TO SHARE
« Reply #209 on: December 24, 2008, 04:02:21 AM »


The spirit of cooperation here is inspiring more people than you guys may be aware.

If things don't get done in time, I'd still like to meet you guys someday...maybe we'll end up in the same gulag. :)

Have a great christmas and new year all.

Regards...