Power ratio over one

[handyguy1]

Hay Gyula:

Anything I need I will get at Radio Shack. I have all kinds of transformers. Just for the heck of it I hooked up several transformers to see what kind of resistance they produced. The best results were from the recharging circuit from an old electric razor, and a charger for 3 volt batteries. They slowed down the unit, however, using 3-volt as the input voltage, they seemed to work well. Using a cap first, works very good. I have an assortment of caps. Zener diodes work better than silicon diodes, but with a 3-volt input there isn?t a noticeable difference.
I appreciate your help.

David

[gyulasun]

...The best results were from the recharging circuit from an old electric razor, and a charger for 3 volt batteries. They slowed down the unit, however, using 3-volt as the input voltage, they seemed to work well. Using a cap first, works very good. I have an assortment of caps. Zener diodes work better than silicon diodes, but with a 3-volt input there isn?t a noticeable difference.

Hi David,

Thanks for the infos.  My questions:
-- You mean you connected the 117V or 120V AC primary side of your old electric razor recharging transformer to your green ouput coil?  If so, what DC or AC voltage did you get from the output of recharging circuit?
-- and what did you get in case of the 3V charger at its output when you hooked it to your green coil?  Did you have any load at the outputs of the recharging circuit (or that of the 3V charger)  or their outputs were unloaded?
-- I do not get this: Using a cap first, works very good.  Where did you use a cap and what was its value?
-- The same as before: Zener diodes work better than silicon diodes, but with a 3-volt input there isn?t a noticeable difference.  Normally Zeners are not used instead of silicon diodes that is why I ask where you used them?

Gyula

[hartiberlin]

Hi David,
I did not quite understand, what your last message means.
Did you try to transform your voltage from a green coil down
to about 3 Volts DC ( after the graetz and buffer cap) and
did you try to run it in a selflooped mode ?

You could also try to hook both green coils in series, so you have double the voltage
and then transform this down with a tranformer, graetz bridge rectify the low
voltage output and put it parallel to the battery and then remove the
battery and see, if the circuit continues to work.

Many thanks.

[handyguy1]

Hay Gyula:
I am going to have to wait until tomorrow to give that info.

David

[handyguy1]

Hay Gyula:
Well my old razor-recharging transformer bit the dust. It took 3-volt input into my device, and I ended up rattling my switches to pieces. The lesson I learned is don?t run power to the charging unit in reverse! I checked a couple of dozen different transformers and the one that works the best (as far as resistance) is my new camera recharger! The output is 4 volts and 30mA, DC average, when its hooked to the output coil. I don?t have a clue what kind of circuit is in it but the case is rather flat, vs., the more typical dome type transformers. What to do with the power from there I don?t have a clue. I would think that I would need to temporally store the power before it goes into the driver coil.

About the capacitor, I referred to earlier; I can hook the cap with a diode straight off the output coil terminals. I don?t have any ideas what to do with the charged cap after that.

I might need to charge a battery first and switch batteries as Mr. Krieg suggested. Your ideas would be appreciated. Just a note, Stefan is talking way over my head with the circuits!

Thanks
David