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Author Topic: Pulse motor build off time.  (Read 83579 times)

Offline TinselKoala

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Re: Pulse motor build off time.
« Reply #90 on: November 30, 2014, 01:51:38 AM »
I see you're getting caught up with leaving your droppings. But you missed a few of my recent videos, maybe you should check my channel and list them in chronological order.

"Most advanced PM"? That's a laugh. You still cannot support your claims with any proof, demonstration of your own or any solid supporting evidence, and I am calling time, you owe me a cheeseburger, you welsher.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #90 on: November 30, 2014, 01:51:38 AM »

Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #91 on: November 30, 2014, 11:30:01 AM »
Hi All,

I would have to back Chet on this one, this is a Pulse Motor Forum and not who has the best ideas.

I know sometimes ego gets in the way, I have even been down that road many times myself.

It's still time to enter this build, I would hope other will join in and show off the skills we all have.

Best to all who joins.

Tom


Offline MarkE

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Re: Pulse motor build off time.
« Reply #92 on: November 30, 2014, 01:39:45 PM »
@MarkE,
 
I resurrected my old "Magnet Core Coil Lenz Delay" thread to address your comment because Chet rolled me up over here on this one.
Whatever your motivation, you are promoting claims that are wrong for the reasons that I have already explained.  If you dispute this and are actually interested in the truth, then I will gladly work with you to define experiments that you can perform so as to determine the truth to your own satisfaction.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #92 on: November 30, 2014, 01:39:45 PM »
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Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #93 on: December 01, 2014, 05:36:01 AM »
Hi All,

This is my update on the 2014 pulse motor build off.

https://www.youtube.com/watch?v=6h86yZ1g4qU

Tom

Offline TinselKoala

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Re: Pulse motor build off time.
« Reply #94 on: December 01, 2014, 06:34:40 AM »
Looks very good Tom. Elaborate and expensive, but really good. You've been working really hard on that system and I'm sure it will work as you plan, once the programming is sorted. I'm looking forward to seeing it running and charging up the capacitor bank. The microcontroller does give you a great deal of adjustment and makes the process easy, much easier than moving sensors around or fiddling with timing component values. Myself, I'd use an Arduino instead of a bare chip, because that gives me the ability to set all those adjustable parameters live, while running, over the serial line to my computer. But that also means I'm not programming at the most basic level and so I'm not learning as much.

I suppose I'll submit my push-pull MescalMotor as an entry, even though it's just a silly toy and not nearly as cool or elaborate as your design, and doesn't do anything except pulse back and forth. Just to have a hat in the ring, even though there are already many better PMs entered.  The only thing I can say for my build is that I didn't spend a penny of "new money" on it, it's totally made from stuff I had lying around anyhow.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #94 on: December 01, 2014, 06:34:40 AM »
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Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #95 on: December 01, 2014, 06:45:23 AM »
HI TInsel,

 My cost was about $50.00 out of pocket, yet I have tons of parts and 20+ microcontroller   chips at a cost of $2each.

Arduino boards cost much more, but it's a good start also.

I just may have to add another controller, due to not having enough input/output ports per chip...

One chip takes up most of the ports due to the LCD screen. The other needs to run the motor timing and so on...

Tom...


Offline TinselKoala

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Re: Pulse motor build off time.
« Reply #96 on: December 01, 2014, 07:08:34 AM »
HI TInsel,

 My cost was about $50.00 out of pocket, yet I have tons of parts and 20+ microcontroller   chips at a cost of $2each.

Arduino boards cost much more, but it's a good start also.

I just may have to add another controller, due to not having enough input/output ports per chip...

One chip takes up most of the ports due to the LCD screen. The other needs to run the motor timing and so on...

Tom...
Yep, I know what you mean, with a standard LCD you need a lot of wires. You might check out the "Parallax" brand LCD screens, they use a single data line and the two power wires, so you get full control of the LCD with only one data output port from your MCU. And you can get, for example, an Arduino "pro mini" for about 4 dollars each from China, or around 10 dollars from the genuine Arduino folks or SparkFun, etc. It uses the same Atmel chip, or rather a smd version of it. For that one you need an "ftdi" usb interface for programming though, another few dollars, but you only need one, can use it for all the pro minis you need.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #96 on: December 01, 2014, 07:08:34 AM »
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Offline MarkE

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Re: Pulse motor build off time.
« Reply #97 on: December 01, 2014, 08:16:22 AM »
Hi All,

This is my update on the 2014 pulse motor build off.

https://www.youtube.com/watch?v=6h86yZ1g4qU

Tom
So just a little note here:  In order to protect the switching MOSFETs you want the inductance loop from the MOSFET drain through the catch diode back to where the + side of the coil connects to the power supply as possible.  See the drawing below:

Offline MarkE

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Re: Pulse motor build off time.
« Reply #98 on: December 01, 2014, 08:19:11 AM »
HI TInsel,

 My cost was about $50.00 out of pocket, yet I have tons of parts and 20+ microcontroller   chips at a cost of $2each.

Arduino boards cost much more, but it's a good start also.

I just may have to add another controller, due to not having enough input/output ports per chip...

One chip takes up most of the ports due to the LCD screen. The other needs to run the motor timing and so on...

Tom...
Most parallel interface LCDs can operate in a nybble wide mode that cuts the number of data lines down from 8 to 4.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #98 on: December 01, 2014, 08:19:11 AM »
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Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #99 on: December 01, 2014, 02:19:41 PM »
HI Mark E,

Not what I'm doing, it's more like a pump circuit design with extra diode that protects mosfets.


Tom...

Offline MarkE

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Re: Pulse motor build off time.
« Reply #100 on: December 01, 2014, 03:02:16 PM »
HI Mark E,

Not what I'm doing, it's more like a pump circuit design with extra diode that protects mosfets.


Tom...
Tommey, for a low-side switch such as you have drawn, the voltage rise that will appear at the drain terminal of the MOSFET will be the sum of the LSTRAY * di/dt between the drain and where the catch diode cathode connects to the circulating current loop through the inductor.  If I interpreted your video correctly you have a circuit board for the MOSFETs and the diodes mounted on a separate block.  The wiring between those two assemblies will develop LSTRAY * di/dt voltage that the MOSFETs will have to tolerate.

If you want to recover back to the power supply then the conceptual circuit below can do that by replacing the SPST switch with a high side driver.  Then you have three phases:  MOSFET ON, MOSFET OFF coil discharge into the capacitor, and then capacitor discharge back through the coil to the supply.  The more conventional method is a full H bridge that just drives the coil and then discharges back into the supply.  Any of the modern H bridge drivers will do that for you.   You only need the top transistor and diode on one side and the bottom transistor and diode on the other side of your coil, a so-called "X" configuration.

Free Energy | searching for free energy and discussing free energy

Re: Pulse motor build off time.
« Reply #100 on: December 01, 2014, 03:02:16 PM »
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Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #101 on: December 01, 2014, 04:07:03 PM »
Hi Mark,

I forgot the other diode from my drawing and also my diodes are going the wrong way....

Sorry, try to answer too fast without thinking...But it works in my design...Never had any mofets blown. ;D

Tom

Offline TommeyLeeReed

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Re: Pulse motor build off time.
« Reply #102 on: December 01, 2014, 04:21:13 PM »
Hi Mark,

This is it.


Tom

Offline MarkE

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Re: Pulse motor build off time.
« Reply #103 on: December 01, 2014, 04:36:30 PM »
The diodes on the right as shown block al current from the power supply.  If you reverse them, then they don't do anything except dissipate power.  The diode on the left dissipates power and prevents reverse conduction through the MOSFET that could occur with long wiring loops.

Generally speaking it takes two SPDT switches to be able to drive current into a coil and then recover most of that energy back into the power source because you have to turn the current around with respect to the power supply while the current through the coil will only be going one way when it flows.  An alternative is to wind a transformer and use the secondary with a diode to reclaim the magnetization energy.

Offline TinselKoala

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Re: Pulse motor build off time.
« Reply #104 on: December 01, 2014, 09:11:33 PM »
I think I might submit this toy for the PMBO just so that I can have an entry in place this year (missed last year). There are far better ones, I know, but all  my better ones are already built so are ineligible and I'm fresh out of ideas. So far my vote would be for Tommey's build, whether it pops mosfets or recharges itself or not. I love the radial engine/microprocessor/linear alternator combo idea.
But watch out for Lidmotor: he's the king of PM builders and it will be interesting to see what he comes up with.

http://www.youtube.com/watch?v=uBIs9CA6K70


 

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