Joule Ringer!

[powercat]

from Lidmotor
_{Lasersaber Super Joule Ringer 2.0 --With multiple bulbs}http://www.youtube.com/watch?v=iVHfruW22PA&feature=uploademail

[conradelektro]

Air core super Joule Ringer

I found an other coil from earlier experiments and could use it for a super Joule Ringer. Again I think that a lower step up rate from primary to secondary would do better (in order to transfer more current) and I will try it when I find the time.

The variable resistor between base of the transistor and positive rail allows to adjust the power consumption to a certain degree and also changes the frequency of oscillation. I set the power consumption  to the same values as in my previous experiment (6 V, 150 mA, ~ 1 Watt). Higher values are possible (e.g. 10 Volt, 300 mA,  ~ 3 W) but the brightness of the lamp was not much better (and the transistor gets hot easily).

It seems that one can transfer more power with a ferrite core transformer than with my air coils (but one has to accept the low audible frequency).

Greetings, Conrad

[Lynxsteam]

I love the simplicity of the Joule Ringer 2.0.  The usefulness of a small 12 volt powered circuit that can light multiple lights is a powerful breakthrough.  The fact that it self adjusts to load opens up the real possibility of home lighting run off 12 volts.  Very cool.

I wondered if the one transistor would work with an air core coil.  I do a lot of work with wind power and have been building controllers using the 2N2222 because of its non linear amplification.  The power in the wind is non-linear so this transistor type works well to capture available power in very low winds.
I built a small coil with a transistor/LED that powers a 14 watt CFL.  Very simple circuit.  At 6 volts the power consumed in the LED and CFL is less than a watt.  At 9 volts 2.5 watts.  I haven't tried 12 volts yet but my guess is that with a non-lenear amplifier, power consumed will be closer to 7 watts.  The 2N222 can handle .6 amps so it may work.  The Tesla type exciter doesn't draw more power as you add lights so the amp draw is limited.

Challenge:  see if you can improve and make this more efficient without adding components!

Thank you for your work and sharing

http://www.youtube.com/watch?v=pCbTVGYnWdc&list=UUGIblCTNadascluwDyRFobQ&index=1&feature=plcp

[SkyWatcher123]

Hi folks, Hi lynxsteam, thanks for sharing the lamp idea.
I happen to just finish a coil tower yesterday, though it has 24 gauge wire and is 9-1/2" tall X 3" diameter, it's a pringles chips can with metal bottom removed.
I'm going to make some tests starting with 24 gauge bifilar wrapped around bottom 1/4 of coil tower and see how it goes with your wiring setup, then try some different things just to see.
Here is a pic of the pringles chips tower.

peace love light
tyson

[conradelektro]

@Lynxsteam:

Nice lamp! That is how I imagined the use of a big air core coil in a lamp, it looks so retro.

I am impressed by the fact that the 2N222 does not become hot at 6V and 150 mA (I guess it also supports 9V at 250 mA for some time).

I just tried a LED (from the base of the transistor to ground) instead of the bias resistor (from the base of the transistor to the positive rail) and it did not work (besides, I am using the MJE13007 transistor). With my air core coils I seem to need the bias resistor. With the bias resistor the LED does not light up and does not make any difference.

Your trigger coil seems to do the trick. Nice idea to use three coils (primary from positive rail to collector of the transistor, trigger coil at the base and the big secondary just for the lamp). This circuit is so simple, but still there are endless variations.

Greetings, Conrad