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Author Topic: RobertDepelteau circuit  (Read 19310 times)

RobertD

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Re: RobertDepelteau circuit
« Reply #15 on: January 26, 2018, 01:59:42 PM »
It's probably a good idea to push the ignition coil as hard as it will take it. The higher the voltage the better the yield.

Now I found out microwaves use 3kv not 18kv so I have to modify the low voltage to get 110v .
As is I'd get 1500v which is too much.

sm0ky2

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Re: RobertDepelteau circuit
« Reply #16 on: January 27, 2018, 08:41:24 PM »
Always looking for better yields.
Once an idea is put in the public domain it's no longer patentable.



That’s not true.
You must license to be freely used
Or place the technology into commercial use.


Otherwise anyone can patent it, and it is then up to you
to spend the lawyer $$ to try and overturn their patent.
If you wait too long, it can be construed as uncontested,
and they may end up keeping their patent.




Also Robert:  please understand the automotive coil is
NOT A TRANSFORMER!!!
At least not in the sense that we commonly think of.
The ground side is joined together inside the casing.
And because of this, it doesn’t work the same in reverse.

Some actually have 2 terminals at the HV output,
which can trick you.
Check the continuity between both ground terminals!

I was forced to learn this while trying to step-down static electricity.


Another point is the break-down voltage of the oil inside them.
two in series might be ok, as they overshoot the mark to prevent
internal arc-over.
However, 3+ may lead to internal short circuit or sparks between
turns of the coils.

sm0ky2

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Re: RobertDepelteau circuit
« Reply #17 on: January 27, 2018, 08:47:47 PM »
Now I found out microwaves use 3kv not 18kv so I have to modify the low voltage to get 110v .
As is I'd get 1500v which is too much.


That actually depends on the microwave design.
The best way to think about it is like a voltage-doubler.
In this manner you can take 2x the value of the capacitor.


For instance if the capacitor is 2800V then we know the circuit
is also 2800V, and when these two are added together, we have
5600V through the magnetron.


Now, this will confuse you when you examine the transformer
because your calculations will show a lower value.
You have to understand that in this circuit the voltage changes
every 1/60th of a second.
The “peak” voltage is about 40% higher that what we think it will be.
the equation generally used takes 1.414 as the accepted value.


For this reason, the transformer fed with 110V
is actually a 2,000V transformer. (in the example of the 5600V circuit)


different microwave ovens have different circuits.
there are “industry standards”, but it is not Law.
Because of patenting and availability of components, many different designs
are used.
It is best to look at the specific design of the oven you took the magnetron and
other components out of.





RobertD

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Re: RobertDepelteau circuit
« Reply #18 on: January 28, 2018, 10:33:16 PM »
Now I found out microwaves use 3kv not 18kv so I have to modify the low voltage to get 110v .
As is I'd get 1500v which is too much.

I'll just have to measure it.
Yes dear the ignition coil is not a transformer.

RobertD

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Re: RobertDepelteau circuit
« Reply #19 on: January 29, 2018, 12:05:53 PM »
I'll just have to measure it.

In this circuit the frequency is whatever I make it. It is driven by the computer. I'll set it for resonance of the high voltage coil. I think that would work. I think I fried my frequency generator connecting it to a driver transistor grounded to the circuit. I have all the grounds in common.

AlienGrey

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Re: RobertDepelteau circuit
« Reply #20 on: January 29, 2018, 12:42:30 PM »
In this circuit the frequency is whatever I make it. It is driven by the computer. I'll set it for resonance of the high voltage coil. I think that would work. I think I fried my frequency generator connecting it to a driver transistor grounded to the circuit. I have all the grounds in common.
All those coils and depending on the on time will cost you in the name of supply and it's just voltage (no current), how are you going to solve that little problem till you move on to the next one ?

RobertD

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Re: RobertDepelteau circuit
« Reply #21 on: January 29, 2018, 07:23:56 PM »
What do you suggest ?

TinselKoala

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Re: RobertDepelteau circuit
« Reply #22 on: January 29, 2018, 07:38:54 PM »
Build it, test it, report your results, discuss.

RobertD

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Re: RobertDepelteau circuit
« Reply #23 on: January 30, 2018, 05:57:07 PM »
That's what I'm doing.

sm0ky2

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Re: RobertDepelteau circuit
« Reply #24 on: January 30, 2018, 06:18:24 PM »
What do you suggest ?


Clamp it
Freeze it then
Use a heat gun and the clamp
to (carefully) remove the cap.
It is under pressure, the clamp lets you unseal it
Without blowing oil everywhere.


The glue should crack from the change in temp.
(if it didn’t blow in the freezer)


Slowly loosen the clamp until you see small oil runoff
If it starts to spray, tighten it.
Collect the oil. You will never be able to fill it back up
unless you get enough extra oil to submerge it
and then it’s only at 1atm pressure, so it’s overload
voltage will end up less than factory spec.


BUT: you can separate the ground internally inside the first
coil. Input ground to supply, output ground to common
ground.


Or use a 1:1 transformer between supply and the first coil.
(if you use a/c or pulsed dc)

And skip the pain in the garage above.






RobertD

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Re: RobertDepelteau circuit
« Reply #25 on: January 31, 2018, 05:51:18 PM »
Perhaps in can use a homemade ignition coil with separate ground to get amps out of the primary.
That's not hard to do.

Belfior

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Re: RobertDepelteau circuit
« Reply #26 on: January 31, 2018, 05:57:07 PM »
Perhaps in can use a homemade ignition coil with separate ground to get amps out of the primary.
That's not hard to do.

I think center tapped to ground is the way to go. Ignition coils are center tapped I think

Void

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Re: RobertDepelteau circuit
« Reply #27 on: January 31, 2018, 06:13:02 PM »
I think many if not all car ignition coils are a type of autotransformer (not 'auto' as
in car, but 'auto' as in self). This means that the primary winding + lead is connected
directly to the secondary winding. I'm not sure if all car ignition coils are made like
that however.

Also, someone said previously that if details of a device are posted in the public domain that the
device could still be patented by someone else. That is not correct. Once the details of a device/invention
are posted fully in the public domain the device can not be patented, assuming the patent examiner
is made aware that the details of the 'invention' were previously disclosed in the public domain before
a patent application was made. The reason for this is because patents are supposed to protect new,
never seen before inventions, but if the details of an invention are disclosed in the public domain before
a patent application is made then the invention is no longer considered 'new' and 'not previously seen before'.

All the best...


sm0ky2

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Re: RobertDepelteau circuit
« Reply #28 on: January 31, 2018, 07:32:21 PM »
https://utrf.tennessee.edu/PDF/Impact_of_PD%202-16-09.pdf


“public disclosure” on the internet is often not identity-related
as far as the u.s. patent office is concerned.
In reality, posting on this site grants the site owner more rights
than the actual “inventor”, who would then be obligated to prove
his/her identity.
Since most of us don’t use our real names here, this task would
be difficult.


Given the 1-yr time frame for filing:
Virtually anyone reading this information could (and sometimes do)
file for a patent.


If the inventor wishes to claim his/her legal rights to the technology or application
They are responsible for the financial burden of doing so.
This includes legal fees, filing fees, investigatory costs, etc.
———————————————————————————————


As it pertains to automotive ignition coil (non-ic type)
See image below

sm0ky2

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Re: RobertDepelteau circuit
« Reply #29 on: January 31, 2018, 07:47:41 PM »
The Commercial Use clause in U.S. patent law is all inclusive
and by far the best way to ensure the device stays unpatented.


This can be as simple as powering a single piece of equipment
at a company building.


Anything from powering manufacturing equipment to a desk lamp
could be construed as “commercial use”.


And by such, the device becomes ineligible for a patent under U.S. law