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#Post#: 1109--------------------------------------------------
Dimming the LJL-SC
By: lynx wind Date: December 20, 2013, 2:13 pm
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New Topic time
Here is a video of my experimenting with the LJL-SC with a
trimmer/dimmer. I am using the schematic designed by CG. It
uses 200 turns 30 awg and 31 turns 24 awg magnet wire. Wiring
it to his schematic is actually much simpler and efficient.
However, I am not having good results with the 10k
potentiometer. It could be that a more robust trimmer would
work very well. I am only using about 1/4 of the 10k pot's
range, so perhaps a 5k or less pot would hold up better.
HTML http://youtu.be/AYZAcbTxS_Q
HTML http://youtu.be/AYZAcbTxS_Q
#Post#: 1118--------------------------------------------------
Re: Dimming the LJL-SC
By: lynx wind Date: December 21, 2013, 2:15 pm
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Great work. I like this circuit much better. Thanks for
keeping at it. Hopefully someone will replicate and this will
become the definitive circuit. I am very glad it doesn't ring.
Also, very nice video and explanation.
Think about how many lamps you have running on 8.4 watts! I
know someone will say that they aren't fully bright, but that
isn't the point. Providing this much light in an emergency
situation off a common 12 volt is very impressive.
#Post#: 1121--------------------------------------------------
Re: Dimming the LJL-SC
By: sut Date: December 21, 2013, 6:27 pm
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Hats off to you both!! Nice job !
#Post#: 1128--------------------------------------------------
Re: Dimming the LJL-SC
By: mindhormone Date: December 22, 2013, 7:10 am
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Congrats!
#Post#: 1140--------------------------------------------------
Re: Dimming the LJL-SC
By: mindhormone Date: December 23, 2013, 7:02 am
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Yes.
And crystal battery as an input source would be great.
But I was thinking more power, like 3000 watts, for Air
conditioner. Dreaming :)
#Post#: 1141--------------------------------------------------
Re: Dimming the LJL-SC
By: totoalas Date: December 23, 2013, 10:43 am
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Hi CG
UNDP is the place for ur lighting
The limitation, different led bulb brands and brightness
Better eliminate this bug so we can use with anything available
for 3rd world countries
In the Philippines this time up to summer
5 to 100 houses average burned due to candles and lives lost
thats why in the EF the jt was born
Current cost of 3 watt led bulb is 1 USD..... either we make
our own led strip to lower the cost will be better
#Post#: 1175--------------------------------------------------
Re: Dimming the LJL-SC
By: totoalas Date: December 30, 2013, 1:33 am
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In my jt parallel 2n3055s tend to dissipate the heat
;)
#Post#: 1226--------------------------------------------------
Re: Dimming the LJL-SC
By: pbezza Date: January 10, 2014, 5:29 pm
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There are many mains rated dimmer switches available which can
handle 200+ watts. Would this be an ideal dimmer considering it
also has the switch built in? For example
HTML http://www.ebay.com.au/itm/Rotary-Control-Switch-Dimmer-Wall-Panel-Mount-Plate-For-Dimmable-LED-Light-/320934213333?pt=AU_Building_Materials&hash=item4ab92b76d5&_uhb=1
Edit: Just reading about light dimmers here
HTML http://www.ehow.com/how-does_5534300_resistance-dimmer-switches-room-lights.html#page=4<br
/>
It mentions that they have an NPN triac in them - it could
possibly be used to replace the NPN transistor in this circuit,
give a dimming function and on/off, 3 in 1. An internal mod
might be required.
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