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Author Topic: Feedback To Source  (Read 388812 times)

nievesoliveras

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Re: Feedback To Source
« Reply #675 on: November 09, 2010, 04:37:43 PM »
I composed a new circuit to get a self runing power supply.
I am still developing it.
The problem I need to solve first is the value of the feedback resistor and cap.

If anyone tries to build it, just use any wallwart inside transformer and connect the circuit to it from the lower side.

If it is from 120 to 12, connect on the 12v side.

Update:

The circuit has 7 pins at the circuit side.
It is better and easier to take a flyback ferrite and build the transformer on it.

The formula is:

Divide the desired voltage by the source voltage you are going to use.
The result is the step up number.
Wind at least five turns as primary.
Then multiply the step up number to the turns you wound.

That last step will give you the secondary winding number.

Good luck!

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #676 on: February 01, 2011, 09:29:02 PM »
After a long time of frustration I could at least make the Pic microcontroller Pickit2 to accept the program "hello world" from the tutorials contained on the cd that comes with the kit.

Lets see how long will it take to learn to program it on assembler, that is the language used by this kit.

Jesus
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Nabo00o

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Re: Feedback To Source
« Reply #677 on: February 01, 2011, 09:58:08 PM »
Hey Jesus. It must feel good to get things starting to work from scratch like that.
I remember back in collage I was in the automation compartment, and we got to do a lot with PLC's (programmable logic controller). Programming it from a computer was pretty easy and visualized with lines, boxes etc. I understand PIC is more textfile-typing based, right?

PIC seems to be more down to core though and could do things faster than PLC's, at least that is my impression. Oh and not to mention that a PLC costs a LOT of money :)

Bye
Julian
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nievesoliveras

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Re: Feedback To Source
« Reply #678 on: February 02, 2011, 02:22:07 AM »
@nab0000

Even though I studied computers I have never in my life had programmed a pic microcontroller and just getting that "hello world" Led on has been a great success.

I do expect to get a circuit that responds to the microcontroller signals to drive an alternator.

And now that I look, this is the wrong thread, the circuit is on another topic that started talking about a good high voltage circuit.

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #679 on: February 02, 2011, 04:44:22 PM »
Thank you @hartiberlin!
The page looks good now!

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #680 on: April 03, 2011, 02:04:02 AM »
Hi Everybody!

I have been unable to deal with the pic programming boards I have.
But I dont like to let an unfinished job.

The schematics posted deal with the sequence to drive the alternator and the code to enter on a microcontroller.

The purpose of it is to make the alternator to selfrun while keeping the battery charged with the battery connected to the alternator as usual.

any body with knowledge on high voltage circuits can use the energy produced to power anything his creative imagination allow him to do.

have fun!

Jesus
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penno64

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Re: Feedback To Source
« Reply #681 on: April 03, 2011, 11:16:52 PM »
Hi Jesus,

Can you be more informative regarding the coils ?

I have a few alternators and a new Arduino (pIC) and would like to try this, though, I
cannot get my head around where the A B and C coil ends are.

Kindest Regards, Penno
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nievesoliveras

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Re: Feedback To Source
« Reply #682 on: April 04, 2011, 12:39:45 AM »
Quote from: penno64 on April 03, 2011, 11:16:52 PM
Hi Jesus,

Can you be more informative regarding the coils ?

I have a few alternators and a new Arduino (pIC) and would like to try this, though, I
cannot get my head around where the A B and C coil ends are.

Kindest Regards, Penno

Now I am searching for a circuit that converts 1.5 volts to 12 volts. but as soon as I find it I will post the one that teach where to connect the three cables. I have to search for it on my old harddisk.

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #683 on: April 04, 2011, 03:26:45 PM »
My word is very valuable for me.
Here is the promised graphic.
Connect from left to right the A B and C from the circuit.

Jesus
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penno64

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Re: Feedback To Source
« Reply #684 on: April 04, 2011, 10:57:05 PM »
Hi Jesus,

Thanks for that.

But, I am still confused.

Are we driving these coils OR are we receiving power from them to charge the run battery ?

If we are driving them - what about the diodes. Will these not block the drive power?

If receiving - what drives the alternator ?

Kind Regards, Penno
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nievesoliveras

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Re: Feedback To Source
« Reply #685 on: April 05, 2011, 01:19:42 AM »
The thing is to conect the three wires to the Rectifier as A B C
If done properly, the controller will activate first A as positive and B as negative by activating Hs1 and Ls2.

After that a bemf on those coils will develop and will be rectified by the Rectifier and converted to Dc and passed to the battery positive and negative connection.

It will not harm the rectifier and the signal will not affect the rectifier either.
Then the signals are Hs1 and Ls3 and that does the same job. And so on.

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #686 on: April 05, 2011, 01:33:57 AM »
There are other two points to have in mind.

1. If you are using a permanent magnet rotor you need to add a means to regulate the overcharge.

2. If you are using the alternador as is and it was working before you took it, a 12v bulb must be connected between the positive and the regulator pin #1 and the pin #2 must be conected to positive both through a switch.

The switch is as if it were the ignition key on a car. When on the bulb will turn on indicating that it is ready and the alternator has voltage.
After the alternator gets to its needed speed it will turn off the light by means of the regulator that engaged and there you have it.

A self running and charging alternator.

If you or anyone else can donate an already programmed controller board I will do the work and the test and post the work in progress with photos.

Anybody has an extra board with 6 mosfets and a programmed microcontroller with the program on the schematic that can donate to the cause?

Jesus
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nievesoliveras

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Re: Feedback To Source
« Reply #687 on: April 05, 2011, 01:48:39 AM »
This schematic belongs to this topic. I posted it on another topic but it belongs here.

What the circuit does is that converts 1.5v to 12v and runs a newman motor.  The bemf is 11.46v at the charging diode.
The good thing is that if you touch the AA positive with a wire connected to the charging diode, the battery recovers its initial charge instantly.  But if you let the wire connected the motor stops and the high voltage that shows the neon bulb, burns the AA circuit if you let it connected.

A circuit that activates and desactivates a transistor for a millisecond  is needed.

I have been unable to build it. Any help here?

Jesus
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nul-points

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Re: Feedback To Source
« Reply #688 on: April 05, 2011, 06:58:25 AM »
Quote from: nievesoliveras on April 05, 2011, 01:48:39 AM
This schematic belongs to this topic. I posted it on another topic but it belongs here.
...
 the high voltage that shows the neon bulb, burns the AA circuit if you let it connected.
...
A circuit that activates and desactivates a transistor for a millisecond  is needed.

I have been unable to build it. Any help here?

Jesus

hi Jesus

interesting circuit!

i think one possible problem with the existing connections is that when you connect your diode onto the battery there is a DC current path from the 12V on the 47uF cap back thro' the coil & diode to the 1.5V battery

even when you aren't getting feedback pulses from the motor your circuit would be trying to apply (12-1.5)=10.5V across the low-impedance of the coil DC impedance and the diode in series, driving current into both the LT device and the battery

try this test circuit - it will decouple the AA circuit from the 12V DC via cap C1 (try 0.22uF) but still allow the feedback spikes to charge cap C2 (try 1000 -10,000uF, say) which can then feed current to the battery (which should be a rechargeable of course)

the inductor (try 2 to 5mH, say) should reduce any large voltage spikes reaching the LT device - the initial energy in the feedback spike will be absorbed instead by the cap which can then charge the battery with only a slight voltage ripple

the schottky diodes, D2 & D3, can be similar to your other schottky (1N5818) on the LT device

NB.  this circuit will allow you to separate the action of feedback from coil-field collapse of the motor from the previous action of feedback of the inverted DC energy at 12V which has just come from the 1,5V battery

don't be surprised if the proportion of coil feedback is not as big as it seemed (because the two actions were combined previously) - you might find that the feedback spikes are not sufficient to recharge the battery after all !  :(   (i hope i'm wrong about that!!)

hope this helps

all the best
np


http://docsfreelunch.blogspot.com
 
« Last Edit: April 05, 2011, 10:39:46 AM by nul-points »
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nievesoliveras

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Re: Feedback To Source
« Reply #689 on: April 05, 2011, 02:15:26 PM »
Thank you @nul-points!

I will send for the parts as soon as I can.
The problem with getting the parts on my island. By the way I am From Puerto Rico.
That is on a corner of the bermudas triangle it is called the Puerto Rican Trench.
I sent for parts and always comes short and sometimes the wrong ones are sent.

So I usually wait to have as much ideas as I can gather and make a list of the parts needed. Even though they come with some parts short, I experiment with what I got.  (With short I mean that they have not the parts and stop the shipment, I have to inquire and tell them to send what they have, that is when the wrong ones are sent)

A map where Puerto Rico is:

Jesus
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