Feedback To Source

[nievesoliveras]

@all

Disconnecting the original JT wires and making the motor run with the secondary as the JT, the motor spins faster and if I connect a red LED from the collector to ground it lights very bright.
The disconnected wires gives an output ac of 1.9v.
I need now to rectify that output and connect it to the source.

Jesus

[nievesoliveras]

@all

Rectified voltage without the motor spinning is 4.08v
Rectified voltage with the rotor spinning is 2.25v.

Without the rectifier wires connected, the battery shows 1.32v
With just the rectifier positive side connected the battery shows 1.32v with the rotor spinning.
If I connect the rectifier negative side the motor stops, the battery shows 1.33v
But eventually it discharge.

Jesus

[nievesoliveras]

@all

This is the schematic used on this configuration.

Jesus

[nievesoliveras]

@all

Adding a diode from the rectifier positive to the battery keep the battery from draining.
When I added a charging battery to the rectifier negative and positive, the motor stops but the source battery does not go down as before and the charging battery is getting charged.

Jesus

[nievesoliveras]

@all

There is a battery I have that when I recharge it, it loose the charge again. It shows 1.19v but if I put a load on it it goes down to 0.6v.
With that battery I recharged the one I have been using that is labeled alkaline.

Conclusion:

There is not feedback on this circuit. But this toroid arrangement is a very good battery charger. With the source battery charge as low as .5v, It charges the charging battery to a degree that the charging battery can make this same joule thief to turn an LED full bright.

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Trying to get this toroid to light a cfl I built a multivibrator with it.
When I connected the 1.5v power there was not any output on the secondary wires.
I rectified the output and it gave 0.12v dc as output.
That is nothing near what I expected.

I exchanged the wires and it gave 3.19 volts rectified from the secondary. But it could not turn the pulse motor as when I use the 7 turn bifilar toroid without secondaries.

Jesus