Power ratio over one

[hartiberlin]

David did you yet try this output circuit ?



But you should really use a transformer that has 120 Volts to 4 Volts output
and has at least 100 Watts power range, so it should not be a small
transformer to not have too many losses.

You need at least a transformer voltage ratio of 30 to 1
as seen from you scopeshots.

So it is vital to choose really the right big transformer with low losses
and the right voltage ratio for perfect impedance matching,
otherwise you will loose too much energy in the stepdown
process.

As I said before, it would be beneficial, if you don?t just use a
teeter-totter see-saw rocker effect, but use the same commutator
setup as in a Newman machine.
Then you only need one switch to make it work
and can have a real rotating setup.

Regards, Stefan.

[handyguy1]

Hay Stefan:

I did try that setup, but not with the transformer shown. I?ll pick one up this week and give it a try. I have been curious myself about spinning the magnets. I?ll research the Newman switch.
I will let you know what happens!

David

[hartiberlin]

Okay, David,
just make sure you take a transformer, that really has a ratio
of about 30 to 1 so 120 Volts to 4 Volts would be okay and
be sure it is at least rated for around 50 Watts,otherwise it will
have too many losses if build too small.

Just watch a few Newman motor videos
on youtube.com and then you know how to build the commutator,
which is just a simple on-off-switch only,
so the current is just only pulsed to the coil at the right moment.

[gyulasun]

....
Regarding the circuit with one or two tranformers by gyulasun, I do not think it will work given the very low power production.

Hi Wattsup,

I am not sure what really mean above. The generator coil(s) produce low AC output power, you mean?  Would you explain?

When I have some time, I will make a diagram so you can test a free-runner without transformers, etc. It would be very simple in fact since the drive side needs to switch polarities, the gen side is also producing switched polarities, so by simply connecting the output of one gen to where the battery is, and instead of reversing two of the wires to the micro contacts, keep them connected all the same way since the generator will do the switching each time it changes direction, this should start by hand. Anyways, I'll make a quick diagram but it would be very interesting to see if it would work without a battery.

I would very much like to see your proposed circuit diagram on your idea.  Please do go on with it, it sounds interesting and logical.

rgds,  Gyula

[gyulasun]

Hay Group:

The transformer ideas are not the way to go. The device runs at 2-10 Hz and the transformers are built for 50/60 Hz. I have considered a switch mode power supply, however I believe that the circuit will create it?s own problems. The device charges capacitors? easily but I have not found the trick of converting that energy to match the input needs of the device.

I happened to come across three solar cells that I was using in my early initial tests. The solar cells are Radio Shack Model -276-124, .55 volts at 0.3 amps ($4.99). I haven?t fully explored the possibility of the LED lights powering the solar cells. I hooked up the solar cells to the devices input terminals, used a 600-watt light to power the solar cells, and the solar cells powers up the device and all the LEDs as seen in the videos!

Just thought I would report on my status.

David

Hi David,

Sorry if you have not had success with the mains transformers yet.  Yes their main problem is they are designed for 50/60Hz frequency and represent heavy load at 2-10Hz frequencies indeed.  As I mentioned you would need a specially designed transformer dedicated for this frequency range and power audio transformers destined for HiFi valve amplifiers can be a candidate here but they are very expensive.

I encourage you on making friends with switch-mode power supplies, indeed they are of 60-70% conversion efficiency or higher and maybe your EE relative you mentioned could be handy here in building one?

I still mean the 78S40 switch mode IC the link I can only repeat here http://ludens.cl/Electron/dcdc/dcdc.html (The glow plug converter: 12V to 1.5V, at 4A).

I found another circuit for 2V output voltage at 1.5A current from an AC input voltage range of 90-265V,  see here:
http://www.powerint.com/PDFFiles/di154.pdf   
The IC used is from Power Integrations, Inc ( http://www.powerint.com )

EDIT:  Forget to mention, solar cells are very, very low efficiency light-to DC output power converters, so that route is also of failure suspect...   as you found with the 600W need...

rgds,  Gyula