Feedback To Source

[nievesoliveras]

@Jesus : I appreciate your efforts to succeed in feeding back to the source.
As i understand you want to amplify the voltage from 1.5V to 12V using a transistor.

What I want with the transistor is to pulse the output from the rectifier to see if the battery accepts the recharge.
I have failed though.

Just for your consideration (if you haven`t already thought about it), you might wanna
look into using voltage doublers : http://en.wikipedia.org/wiki/Voltage_doubler
So using 3 in a row will get you 12 V, with hope that the amperage will still be sufficient.

There was a circuit already made but it was blown up by high voltage on one experiment I did.
http://www.overunity.com/index.php?topic=6362.msg150028#msg150028

About the frying of the transistor.
Have you tried 2N3055s? They are really tough and can stand some beating.
Have never managed to fry one until now hehe.
Good luck with your further efforts!
Xenomorph

I usually use Tip3055 but I did not used it this time. I should have.

Thank you!

Jesus

[nievesoliveras]

@ all

For everybody's benefit and for future reference here is the edited graphics from wikipedia.

Jesus

[gyulasun]

Hi Jesus,

I would like to comment your rectifier circuits a little, it is needed...

The schematic in the lower left corner is in fact a full wave and not a half wave doubler.  See its operation here:
http://www.play-hookey.com/ac_theory/ps_v_multipliers.html

And this brings up the question: then what is the schematic in the upper right corner?  (where the full wave bridge is fed from a center tapped transformer)  While it is true that it gives a double voltage as you show between the outputs points,  normally in this kind of circuit the center tap of the transformer is a reference (zero voltage or ground) point (and it is not connected to the common points of the capacitors, in fact there is only one capacitor at the output of the bridge)  and the positive output and the negative output can supply circuits where a split supply is needed with a + and - polarity with respect to a common ground. And with respect to this ground neither the positive nor the negative output voltage is a doubled value, ok?
For this latter circuit I found this small explanation that sounds ok for me: http://www.powertronix.com/html/body_linear.html   
They call it a dual complementary rectifier which not very common reference to it but exists.

So all in all the most important correction is the circuit in the lower left corner is a full wave rectifier and a doubler..

Regards,  Gyula

[nievesoliveras]

Hi Jesus,

I would like to comment your rectifier circuits a little, it is needed...

The schematic in the lower left corner is in fact a full wave and not a half wave doubler.  See its operation here:
http://www.play-hookey.com/ac_theory/ps_v_multipliers.html

I made a composition of the circuits you recomend.
The others were recomended by @xenomorphlabs.

And this brings up the question: then what is the schematic in the upper right corner?  (where the full wave bridge is fed from a center tapped transformer)  While it is true that it gives a double voltage as you show between the outputs points,  normally in this kind of circuit the center tap of the transformer is a reference (zero voltage or ground) point (and it is not connected to the common points of the capacitors, in fact there is only one capacitor at the output of the bridge)  and the positive output and the negative output can supply circuits where a split supply is needed with a + and - polarity with respect to a common ground. And with respect to this ground neither the positive nor the negative output voltage is a doubled value, ok?
For this latter circuit I found this small explanation that sounds ok for me: http://www.powertronix.com/html/body_linear.html   
They call it a dual complementary rectifier which not very common reference to it but exists.

So all in all the most important correction is the circuit in the lower left corner is a full wave rectifier and a doubler..

Regards,  Gyula

The other group of voltage multipliers or voltage suppliers is included too.

Thank you @gyulasun !

Jesus

[nievesoliveras]

@all

I built the circuit using the old jule thief toroid, because I have no new wire at the moment. With a red LED Salvaged from a camera circuit connected from the collector to battery ground, If I connect a 1.5v battery and spin the rotor, the light flashes brightly.
If I connect it between the collector and the emitter, it flashes dimly. By the way the negative output of the rectifier is not connected to the battery ground.

I think that if I use a 12v battery, I am going to burn everything here. So I will try with a spent 9v battery. This battery has 4v left. When I connected it the LED stayed lighted without spining the rotor.

When I spinned the rotor, the LED began to flash and the battery to go down in voltage. The LED is connected between the collector and the battery negative. I exchanged it with a diode and the battery was drained down when I spinned the rotor.

When I took the diode out and without spinning the rotor, the voltage began to climb from 0.8v now 2.11v If I spinned the rotor the voltage wemt down. This is crazy. I added a 2200uf capacitor an the voltage lowered a little and began to rise without spinning the rotor.

This is not what I was expecting from this circuit.
I was expecting to get feedback to the source and I have not it here.

Jesus