Newman machine replica

[hartiberlin]

@TheOne
try to connect a graphite pencil to the coil wire
and then only touch via the pencil tip the
axis for contact.

Watch the different spark and watch the battery
voltage.

[joe]

Hi,  The one and Stefan,

Could you tell if we need to wind 1 coil or 2 coils around the the pot or tube? And how the connection work?

And could someone draw a little shematic of the whole machine/
I really want to build this motor.

Thanks  Joe

[hartiberlin]

Hi Joe,
just one coil.
But you could also wind 2 or 3 coils around it and
use the other coils as transformer outputs.
Due to the pulsed outputs these can drive very well fluorescent light bulbs !

If you only use one coil you just pulse this coil via the DC battery source
at the right moment when the magnet inside the coil is at the right position to
get attracted or repelled to turn another revolution.
So your commutator just only needs to switch on the current
inside the coil for a fraction of a full revolution at the same angle.
Thus you can just glue a tape onto the axis and leave a blank part of the axis
there and the wire of the coil
makes contact only when the wire does not hit the tape, but the metal axis shaft.

So you pulse only DC voltage to the coil synchroneously to the rotation
of the magnet  all the time without reversing
the current.

Hope this helps.

Regards. Stefan.

[hartiberlin]

Here is a circuit diagram.

You could also use a reciprocating magnet inside the coil, that just goes up and down,
so to build a water pump for instance or a linear motor.

But the circuit diagram is the same , look here:



You can use this also for the rotating magnet inside the coil.

The switch  is the commutator point, so it switches on the current to the coil
in sync with the magnet movement and must be on the axis.

If you put a neon bulb as shown across the coil,
the recharge effect into the battery is less, but you would
get at least a flickering neon or fluorescent bulb.

Instead of the shunt resistor you can use an incandescent bulb
to use the RF bursts to light this up.

The circle with the A means ampmeter and can be bypassed after
measurements are done, so it does not work as a choke to block
the RF burst going back to the battery.

The shown values for the coil inductance L and DC resistance R were
from an earlier coil of mine requiring much higher battery voltage, so
if you use just 12 Volts go with a DC resistance of about 200 to 300 ohms.

Regards, Stefan.

[joe]

Great!!!!!!!!!!!!   Stefan!

Thanks for the infos and the nice draw!!!!!!!!!!!!

Joe