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Author Topic: Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated  (Read 254275 times)

Offline ramset

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Maybe Pierre can comment here ??
moving forward ??

respectfully
Chet K


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Offline T-1000

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My own Mega isn't a Rev3 version though.
The board I got is Rev3 and it activates pins 13 (internal LED) and temporary 2 (internal TX LED) on boot after quick test.

In regards to end of cycle there are 2 LOW signals sent in Pierre's sketch.

And the question still to me is if 2 coil relays are activated at once on HIGH signal, is that 4 coils distance (as like in Pierre's series coil connection explanation video) or just same coil getting connected to negative terminal.

Cheers!

Offline Jeg

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Rotating field:

https://www.youtube.com/watch?v=0IKX8MeVQio

Thanks r2fpl
Nice work. By the background noise looks like you use relays instead of solid state switches.

Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows. 

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Offline r2fpl

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Thanks r2fpl
Nice work. By the background noise looks like you use relays instead of solid state switches.


Yes, relays.  I try with L298n but not stability for 2 channels output and too hot. Relays works very well.

Offline seaad

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Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows.

Jeg, " at 120Hz  can be used for sync" .  Agree. This is an odd connection with thin wire. Just a signal current?    About the freq. just leave that  :D :D
 Has it to do with the current consumption to his big transformer during charge and under operation?

My pics showing Volt and Amp with the Microwave Oven   OFF  and   ON.

Does anybody know "APME" the label on the Micro Oven?  A company??
« Last Edit: April 23, 2018, 07:03:16 PM by seaad »

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Offline cheors

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Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows.
[/quote]

Interesting: it could explain why he needs this 4 ohms resistor:
To power the coils/switches with some ripple (variable current) and recover from the diodes on the other side.

Offline seaad

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Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows.

Interesting: it could explain why he needs this 4 ohms resistor:
To power the coils/switches with some ripple (variable current) and recover from the diodes on the other side.

cheors  I think you are close!  If true, goes to relays 71, 72    (first anyhow) !!    See pic

"I wonder if the voltage across the blue cap is a completely smoothed dc " Anyhow a much higher level!

The only BUT here is that the wires goes slightly backwards when they comes up behind the bottom relay assembly.

cheors On your CurrentVariation pic : I'm Not convinced that Pierres diodes goes to both plus an minus ? See an earlier post of mine. Reply #477 on: April 16, 2018, Page 32,


Regards  Arne

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Offline listener192

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Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows.


Interesting: it could explain why he needs this 4 ohms resistor:
To power the coils/switches with some ripple (variable current) and recover from the diodes on the other side.

On a raw linear power supply, the current draw when charging super caps is very high.  I charge my 500F bank by a 30V 30A switch mode supply, which is current limited at 30A and the full 30A is drawn during charging. It would draw a lot more if there were no current  limit. The 4 ohm resistor is just a basic way to limit the current so he doesn't burn out the transformer. The FWBR is rated at 125A. 

Regards

L192

Offline listener192

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Seaad
On the thin red wire.
I wonder if the voltage across the blue cap is a completely smoothed dc or it has any kind of ripple at 120Hz when the device is working. If the latter is true then it can be used for sync. Perhaps the unknown 37pin of Pierre opens and closes according the peaks of this signal. A switched ground point perhaps? Or a sync method for bringing the output peaks in time accordance with the input wave? Only Pierre knows.


Interesting: it could explain why he needs this 4 ohms resistor:
To power the coils/switches with some ripple (variable current) and recover from the diodes on the other side.

Its a very thin wire, it cannot be carrying much current.

Regards

L192

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Offline listener192

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cheors  I think you are close!  If true, goes to relays 71, 72    (first anyhow) !!    See pic

"I wonder if the voltage across the blue cap is a completely smoothed dc " Anyhow a much higher level!

The only BUT here is that the wires goes slightly backwards when they comes up behind the bottom relay assembly.

cheors On your CurrentVariation pic : I'm Not convinced that Pierres diodes goes to both plus an minus ? See an earlier post of mine. Reply #477 on: April 16, 2018, Page 32,


Regards  Arne




The diodes are wired 2 in parallel which is  a strange way to get the current rating doubled however, maybe its just cheaper doing it that way. The way its drawn ,the diodes look like they are either side of the switch each one joined a potentially different current flow.  Anyway they just are not connected that way.

L192

Offline T-1000

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The diodes are wired 2 in parallel which is  a strange way to get the current rating doubled however, maybe its just cheaper doing it that way. The way its drawn ,the diodes look like they are either side of the switch each one joined a potentially different current flow.  Anyway they just are not connected that way.

L192
There are two factors which make sense wiring transistors and diodes in paralel: lowering resistance and eliminating generated heat.
Instead of wasting energy as heat I am also doing paralel diode connections in experiments when frequency and internal capacitance do not interfere.

Cheers!

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Offline seaad

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L192
Still the transformer needs 0.5 Amp when charging supercaps (via 4 Ohm)  and 1.5--> 2.5 Amps to the same primary when running the system. I can't believe that the thin wire I pointed at, feeding some or more  relays can handle 4-8 Amp at the secondary side while only a slight current goes thru and warms up, that super HOT 4 Ohm resistor. Look at the size of the wires to and from that resistor. We need a better explanation
Arne

Offline d3x0r

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L192
Still the transformer needs 0.5 Amp when charging supercaps (via 4 Ohm)  and 1.5--> 2.5 Amps to the same primary when running the system. I can't believe that the thin wire I pointed at, feeding some or more  relays can handle 4-8 Amp at the secondary side while only a slight current goes thru and wrms up, that super HOT 4 Ohm resistor. Look at te size of the wiresto and from that resistor. We need a better explanation
Arne
the red wire is probably the common power for driving the relay coils.  Most relays require 15-20mA; and since only 3 or 6 relays are engaged at a time, only requires 45-60 or 90-120mA respectively.


Offline seaad

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the red wire is probably the common power for driving the relay coils.  Most relays require 15-20mA; and since only 3 or 6 relays are engaged at a time, only requires 45-60 or 90-120mA respectively.


?????

Offline d3x0r

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