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#Post#: 1691--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 5, 2014, 6:00 pm
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A couple more thoughts on this topic.
First, CG you really stay on things which impresses me. So
often people are satisfied and don't push the envelope.
Second, We should publish the definitive LJL-SC schematic at
some point. A lot of people have asked for a definitive
circuit. Is this it?
Thirdly, I never reported on this, but the 250 Ohm 5 watt
wirewound pot worked like a charm. No need to fine tune for
bulbs with extra turns. I agree the 100:14 on a 4" diameter
seems like a nice setup.
#Post#: 1696--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 6, 2014, 11:26 am
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I tried this last night, but with the ferrite. 4 Bulbs very
bright at .984 amps, .796 amps without diode and maybe a
noticeable loss of brightness. I have never made claims about
lumens/watt because it will vary depending on how many bulbs and
what type. Most people are happy with bright light at low
power.
Are you saying that this circuit runs better without the
ferrite?
#Post#: 1724--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 8, 2014, 3:16 pm
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Bravo, Bravo, Bravo..... Nicely done video, great
demonstration, very impressive. You are getting good at the
video thing now, and I will be out of a job now. And you spent
a fortune on bulbs.
So, in your opinion is the ferrite no longer needed?
#Post#: 1739--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 11, 2014, 1:47 pm
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Very cool. Does this mean you are lighting the bulb with about
28ma after the charging is figured in? That is pretty darn
good. How bright is the bulb, because normally 28ma is barely
candlelight.
ps, I am not so good with text speak and motions - what does "^"
mean
#Post#: 1742--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 12, 2014, 7:11 am
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Man you are having fun. Good work and great experimenting.
Here's a wacky idea. I like simple because that's about what I
can handle. When the flyback occurs a current is induced in the
coil. By adding a third coil the flyback is transformed to a
higher voltage than battery and can flow through the diode and
back to battery. Not sure which way this third coil would be
wound.
#Post#: 1748--------------------------------------------------
Re: LJL-Xsc
By: nessprojects Date: March 12, 2014, 5:36 pm
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Hi All,
I made a circuit very similar to "reply #36 by CG" with the
exception of the high voltage lamp side of things to charge a
battery of higher voltage than the input, Anyway regarding the
capacitor on the output side I tried many different sizes and
found the higher you go the better the charge current but I
found that all it was doing was smoothing the voltage to the
meter. After a while of playing I decided it was best to remove
the cap and let the high voltage spikes charge the battery at
the expense of only reading the RMS current (better for the
battery too). Try fitting your ammeter between battery and
supply then put a cap across the meter (this seems to calm the
meter).
Another way is to read the RMS amp (no capacitors) then multiply
this reading by 1.4 (square root of 2). Digital meters can be
very misleading.
Good luck in your venture.
#Post#: 1753--------------------------------------------------
Re: LJL-Xsc
By: nessprojects Date: March 12, 2014, 11:18 pm
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Thinking aloud now:-
I don't think you will be able to charge a battery on the
negative pulses because I cannot see where they will come from
!. Pulsing from 0v to 12v on a coil will only give eddy currents
in one direction on the coil. I know I made a joule thief using
a toroid, wrapped extra turns on the toroid and connecting it
to a led, it would only light in one direction. Adding
additional coils and loading them only seems to steal power from
the main oscillator.
Keep up the good work, very intriguing.
#Post#: 1754--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 13, 2014, 6:59 am
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I gave the third coil idea a try. It draws more power and pulls
voltage down faster than just the normal LJL-sc circuit. I
tried several configurations with the coil oriented through the
diode, with another diode on the positive lead to the main
primary, etc... Nothing beneficial. That doesn't mean that
there aren't possibilities.
#Post#: 1756--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 13, 2014, 9:05 am
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Keep going and keep blowing.
Ahhh - Pure Michigan
#Post#: 1771--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: March 14, 2014, 1:43 pm
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"And Let there be Light!"
When I did this the drain on power went up while charging. If
you disconnect the charging battery does the drain on the source
battery reduce by that amount, more or less?
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