@ IST

Looks like you had much fun winding the toroid.

There are some things that confuse me:

1) You have about 8 turns of wire on a (plastic-cored ?) toroid that is being excited by a 120 Hz half-wave rectified sine of normal 115 VAC signal.  OK it will not be very close to a sine wave, more a distorted approximation since inexpensive inverters never are true sine wave output.

I would think this winding would present a quasi short-circuit to the output of the cigarette lighter inverter.  Do you not blow fuses or smoke the inverter ???
Something looks very fishy to me.

2)  I see nothing that should cause any field to rotate.  It looks like a simple transformer, nothing more.

And if the core is plastic, the coupling between windings would not be all that high, so even transformer action would be lower than optimum.

3)  What does this toroid do that would be interesting ?  It seems to be a very banal and boring design.  Lighting up light bulbs while discharging a battery makes me fall asleep.

To be interesting it has to light bulbs while charging a battery and must be able to be replicated by several peers.

Earl

I thought pvc at first. But i believe it is painted steel.

Hi Otto,

Please if You could give me your favour.
Could You modify your TPU (only MOS FETs adding a diode as I shown on diagram) and check if You can get any conversion.
Adding this diodes we eliminate effect of internal diode. I think it can be the key.
Thx in advance

Sfieszaq

Hello all,

@sfieszaq

I hope I worte it right

There is no need for the diode.

Otto

Hi Otto,

I want just to say, that the internal diode seems like work for us. Otto, please just do this test and check if You can get any conversion. You can use MOS FETs or Tubes but the biggest different between them is this internal diode in FET transistor. Just see how different works your TPU.

S-Q