Tesla Rotating Field Motor/Generators

[redrichie]

Looks really good. been at it a while keep up the good work. this will be one that you have around for a good long time to experiment with.

[Farmhand]

Thanks Redrichie, Until i get a rotor sorted I'm just seeing what I can get from
it as a transformer, I think to use it as a motor I would need to pass the
current through the primaries and the secondary, in other words use all the
wire for magnetizing.

As a transformer it looks good so far, seems I can have 4 x 240v outputs on 2 x two phases,
2 x 480v outputs on two phases. If I use two 480v AC outputs by series
connecting the secondaries in two sets and make them resonant I get a really
sharp sine wave which is out of range on my 1000 volt meter. But that is
unloaded and at about 40 Khz, if I load one series output with a 25 watt 240 volt
bulb it can hold 312 volts across it while the whole setup is using 2.5 amps
from 12.5 volts, without getting towards resonance using a lower frequency
the max loaded voltage for a series output is 240v and can light the 25 watt
bulb with 2 amps from the 12.5 volt battery.

I think I will un-mount it even up the coils a bit while winding another two
layers of secondary turns on each quarter after another night of messing about.

I think my scope is messed up too if I scope an output the voltage increases
by 50 volts. I think it's because of the scope grounding - end of the secondary winding. Maybe it's the probe, anyone familiar with this problem.

Cheers.

[Farmhand]

OK these things are really interesting, they can be configured in a lot of different ways.

I found by using two sets of series outputs which going by turns 1000 secondary
48 primary turns on each should give me a transformation ratio of 1:20 or for
12.5 volts input 250 volts per secondary or 500 volts two secondaries in series,
and it does, however I found if I use the right frequency I can get 1000volts
rectified into a cap and run a spark gap from one output while lighting a
25 watt bulb from the other at about 220v at 16 Khz

Because I want another way to power a spark gap I will try a few things, I
was going to try voltage doubling both outputs and using them in parallel, but
I think I'll just try rectifying both without doubling.

The DC supply is holding about 980 volts with a steady spark the
discharge caps would be getting a bit higher because of the HV charging coil.

Cheers

[Iotayodi]

Maybe it's the probe, anyone familiar with this problem.

Not really. I do know the bandwidth should be 5 times larger. A 10 mhz signal being tested should use a 50mhz scope. The probes bandwidth also comes into play.
Really great work Farmhand!