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#Post#: 2329--------------------------------------------------
Re: LJL-Xsc
By: dynamo Date: April 18, 2014, 2:10 am
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a smooth dimmer would be cool. ;) - dynamo
#Post#: 2330--------------------------------------------------
Re: LJL-Xsc
By: dynamo Date: April 18, 2014, 2:13 am
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a smooth dimmer would be cool... (<: -dynamo
#Post#: 4601--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 22, 2014, 6:47 pm
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Update on the LJL-Xsc
Inspired by CG's recent work on an LED lighting circuit I
replicated it and it worked very well. Then I wondered how the
small ferrite choke would do with 100 turns 30 awg and 14 turns
22 awg with the single transistor circuit. Its awesome! I
think CG experimented with this too.
I am just about back to the original SJR3.0 circuit now. The
250 ohm dimmer works great and the amp draw is low. I will post
a photo of the test unit which is about the size of a typical
wall switch plate. I will probably phase out the LJL-sc on the
website in favor of the simpler, less expensive version.
#Post#: 4607--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 22, 2014, 8:46 pm
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Cold Fusion happens in the Michigan Winter when I go out and
make adjustments to wind turbines with bare hands on the cold
steel pole.
#Post#: 4608--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 22, 2014, 9:11 pm
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Here's a pic. Same wiring diagram as on the LJL-xsc, just the
smaller ferrite choke. Much less wire so it wont work without
the ferrite. This is very much like Laser Saber's SJR3.0 but
with a cheap ferrite and the dimmer.
#Post#: 4612--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 23, 2014, 6:16 am
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It is quiet, and the amp draw is similar to the BJL. Yes I need
to make a video. I haven't had a potentiometer fail yet. I
think because it can handle the power at 0-10 ohms and then as
the ohms increase power drops off to less than 5 watts.
I have been running five bulbs in my garage and the transistor
stays cool.
#Post#: 4614--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 23, 2014, 9:04 am
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Yes, 250 ohm 5 watt wire wound pot, same wiring as before. Base
to LED, coil start wires to collector, no diodes. I will have
to check on amp draw, I remember the amp draw at 12.5v for two
bulbs fully bright was .867amps, and will turn down to .06amps.
I doubt five bulbs will run at below 1 amp fully bright.
#Post#: 4617--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 23, 2014, 12:25 pm
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I lay the primary right over the secondary. I tried Cree,
Eco-smart, Philips and Utilitech, and 7 watt CFL - they all lit.
I will quantify better this weekend. And make a video.
#Post#: 4620--------------------------------------------------
Re: LJL-Xsc
By: lynx wind Date: October 23, 2014, 3:28 pm
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5 bulbs (6 watt ecosmart LED) use 1.357 amps x 12.6 volts = 17
watts/5 =3.4 watts per bulb
Seems about right since they aren't 100% bright.
#Post#: 4660--------------------------------------------------
Re: LJL-Xsc
By: ds Date: October 31, 2014, 6:46 pm
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lynx wind, thanks for sharing this with us. Do you have a part #
for the 250 ohm 5w wirewound rheostats at Mouser? I looked and
couldn't find them. Thanks.
ds
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