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#Post#: 6138--------------------------------------------------
Modified Lynx SJR
By: amit roy Date: July 9, 2016, 11:52 pm
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Dear All,
Attached is some modification I did to charge the battery while
lighting the load.
The idea strike to me when I was trying to pull down the base
voltage. So instead of putting some resistor and dissipating the
heat, I tried to put a battery.
My initial testing was good but I wanted to have some scope
shot. I don't have oscope with me, can anybody try this circuit
and share the scope shot.
Also can you please give me your comments on this new circuit.
All the modification is highlighted in box with light blue.
#Post#: 6142--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 10, 2016, 11:57 am
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Few more observation.
The peukert's discharge current of 35AH SLA is 1.75A.
With this current and DoD of 80%, the battery should last around
5hrs.
But with this circuit ( inclusion of diode and battery between
base and load) strangely my battery went more than 8hrs.
I don't know what has happened but I desperately need oscope
shot to understand why my source battery lasted so much of
hours.
Can anybody try this circuit.
#Post#: 6144--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 10, 2016, 8:23 pm
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It is same coil which lynx proposed. 14:70 4"D aircore with
24awg magnet wire.
Just using this core won't light the 220V bulbs. You have to put
some ferrite cores to tune the circuit aswell as boost the input
12V to 14V.
I think I already shared my observation on different thread.
#Post#: 6145--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 16, 2016, 9:25 am
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After repeated trial, the result are quite encouraging.
Here is the result
1) Source battery -> SLA 35AH 12V
2) Load -> 4*7W 220V LED
3) Battery to be charged-> 10AH SLA with SoC of 0%(11.53V)
4) Run the entire system for 7hours
5) Battery to be charged was charged to SoC of 70%(12.3V)
6) There was no change in the intensity of LED's and there was
no extra charged consumed from source battery.
#Post#: 6147--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 16, 2016, 11:16 am
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Yes and that is why I posted this circuit to understand from you
guys what has happened. Is it my measurement problem or
something else?
Ofcourse without the load I was not able to charge it. In place
of LED as load I placed an equal amount of resistance and also
put a diode aswell. But all this didn't worked.
It only worked if I place load as LED lamps as shown in my
schematic. Also placing the diodes in path of the source battery
is also essential.
#Post#: 6152--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 21, 2016, 7:20 am
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Thanks Ethan. Seems that there is no other option but to buy a
oscope.
One more update. My luxmeter arrived yesterday.
What I found that if I light 4*7W LED bulb, it was consuming
around 1.3A but sadly luxmeter showed half the lux compare to
lighting all these bulbs with grid.
So my brightness is not even close to what lynxwind got. I think
he was claiming somewhere close to 80%.
#Post#: 6157--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 22, 2016, 10:22 pm
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When you say 120v to 12vct, you mean current transformer (ct) or
voltage transoformer. 120v to 12v is a voltage transformer. Am I
correct?
Also when you say 6v wire you mean center tap of 12v wire.
Correct?
Is the connection of wires of transformer will be same as coils?
Thanks for your reply.
#Post#: 6163--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 28, 2016, 9:54 am
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Finally today I got the result what I was looking for.
It was from Jonny Davro piezzo electric buzzer on lynx circuit.
However when I used the xformer(12-220v) as suggested by Jonny,
my brightness still was low. Almost 50% lower compare to grid.
Than I replaced the xformer with the lynx aircore coil and WOW
the brightness was
1) 2 * 7W LED 100% bright compare to grid(lux meter
measurement). Power consumption was 18% lower compare to grid.(I
know ehtan don't like my analog meter based current measurement
but this is what I have at present till I buy a oscope)
2) 3*7W LED 85% bright compare to grid. Power consumption was
26% lower compare to grid.
All the brightness measurement was with lux meter. Position and
environmental effect was constant between the comparative
measurement.
Now I am happy. Very happy.
#Post#: 6164--------------------------------------------------
Re: Modified Lynx SJR
By: Bassman Date: July 29, 2016, 1:01 pm
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Hi, i am very excited by your discovery. Could you give more
information on your buzzer, and where you got it?
Maybe you could show us your video. And the new wiring diagram.
#Post#: 6166--------------------------------------------------
Re: Modified Lynx SJR
By: amit roy Date: July 30, 2016, 12:19 am
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Thanks Bassman.
12V buzzer I bought it from the local market in India. No part
number.
Attached is the wiring diagram.
For video, let me clean the mess of my lab and I will upload the
video soon.
PS: I am constantly modifying the circuit. The next update is to
charge another battery using this circuit.
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