Stingo Solid State Battery Charger

[cikljamas]

Sucahyo, my friend, i took my ksc 5027, and i even found in one
new store tip 32, and i tested stingo and bingo with them, and
guess what ?...Much lower efficiency !...There is no reason not
to tell you the truth, i was very surprised, but somehow since
this transistors are at the first sight weaker i would be more
surprised if there was better result with them than with 3055/2955...
But, i tried, i can not say i did not try at least...
Never mind, i use to be surprised in electronics stuffs,
only i wonder how you get so good results with ksc 5027 ?

Rgds !

[sucahyo]

The bridge rectifier across the output of T1 is mostly wasted, as I explain in my blog here. Also the cap across the bridge rectifier's output is not needed and should be left out.

It would be more helpfull if you post some number of input and output measurement.


Notice that I connect the load negative to source positive, unlike yours. This change result.

When using FWBR with negative to positive, the FWBR will also capture the second spike. I believe switched coil produce bouncing wave, the FWBR capture the bouncing.

Original schematic was at http://www.energeticforum.com/renewa...harger-13.html

Connecting the bridge rectifier to the primary of T1 has some unexpected results. Fig.1 is the original schematic as seen at the link I gave. Fig.2 is the same schematic redrawn to separate the diodes of the bridge rectifier so one can see how they are actually connected. You can trace them down if you like and verify that there are connected the same as the original schematic.

It is very different.

When the coil collapse, mine current would flow from transistor to diode to battery to diode to cap to source positive. Yours would flow from transistor to diode to battery and cap to source negative.

When the coil collapse bounce back, mine current would flow from source positive to cap to diode to battery to diode to transistor, from coil going back to coil. Yours do not allow that.



I suggest cap isolated FWBR because I have twice more efficient result. Example:
YouTube - radiant recovery circuit, direct vs correa's converter

I can build joulethief right away and show video if you still have doubt. But please excuse poor attempt switching meter because I only have one.

If you prefer to your own experiment, please do try it your self. But please use the correct circuit.


I don't use negative to negative recovery because I don't want the battery getting charged even when the oscillation is dead. To get good efficiency at low frequency.


FWBR without capacitor produce twice output but at the cost of twice consumption. FWBR with capacitor in series produce less than twice output but have twice more efficiency.

With stingo, I would use the cap to block only the normal current.

BTW, I suggest at least 2 Amp diode for the FWBR. 1N4007 is only rated 100mA and stingo can produce more than 1 amp even with single diode. You will kill either the diode or the transistor with 1N4007.

Yes I will inform you.

Thanks .

[Guruji]

Ok. I will look forward for your result.

If you can, I would be very interested to know the efficiency comparison of your JT with and without FWBR.

Yes I will inform you.

[Watson]

Joule Thief with bridge rectifier - Unexpected results

Hi Sucahyo sorry for too much questions and rough sketch but really want to do the best charger for my batteries. I'm posting circuits to be sure how FWBR should be used. Better AC caps as used on stingo then Electrolyte to BR?
Thanks for your response.

The bridge rectifier across the output of T1 is mostly wasted, as I explain in my blog here. Also the cap across the bridge rectifier's output is not needed and should be left out.

[sucahyo]

Ok. I will look forward for your result.

If you can, I would be very interested to know the efficiency comparison of your JT with and without FWBR.

[Guruji]

Jtcap

Hi Sucahyo thanks for your posts I will do that cap and FWBR to my JT.
Thanks

[sucahyo]

Here is the JT picture:



Here is my battery swapper suggestion:



Put volt meter to both battery.

[sucahyo]

Hi Sucahyo is it possible that you post a schematic regarding JT how to be with caps and FWBR cause I had built these already and I want to use them? In future I will change them to Stingo.
Thanks

Ok. I will post it tomorrow.

It is similar with normal FWBR except you place a capacitor between the FWBR and coil-battery positive. The other input of FWBR connect to coil-transitor.

[Guruji]

JT and SSG

That kind of FWBR is less efficient than my last posted one. You get more power, but also consume more. The purposes of capcitor on my FWBR combiner is to prevent the source directly charging the load.

If you use like those picture, the source will charge the load even if the circuit is dead / do not self oscillate. Putting the cap in series with the FWBR is better.

Blocking only the source like my latest version I thinkonly applicable for circuit that has consumption reduce with load, like stingo or tuned SSG.

The capacitor need to be able to sustain 400V from coil collapse, but only 12V (source voltage) from source. Because I am not sure if electrolytic can sustain 12V in reverse polarity, I can only suggest non electrolytic.

On that joule thief, FWBR do nothing, because current flow one way. If you connect the JT output the same way as SSG, FWBR usefull.

Compare all if you have doubt.

I use two stingo before and I get good result. I use three now and I still get good charge and moderately cold battery temperature after fullly charged.

I don't use SSSG or JT as charger because I found stingo more efficient.

Hi Sucahyo is it possible that you post a schematic regarding JT how to be with caps and FWBR cause I had built these already and I want to use them? In future I will change them to Stingo.
Thanks

[sucahyo]

Hi Sucahyo sorry for too much questions and rough sketch but really want to do the best charger for my batteries. I'm posting circuits to be sure how FWBR should be used. Better AC caps as used on stingo then Electrolyte to BR?
Thanks for your response.

That kind of FWBR is less efficient than my last posted one. You get more power, but also consume more. The purposes of capcitor on my FWBR combiner is to prevent the source directly charging the load.

If you use like those picture, the source will charge the load even if the circuit is dead / do not self oscillate. Putting the cap in series with the FWBR is better.

Blocking only the source like my latest version I thinkonly applicable for circuit that has consumption reduce with load, like stingo or tuned SSG.

The capacitor need to be able to sustain 400V from coil collapse, but only 12V (source voltage) from source. Because I am not sure if electrolytic can sustain 12V in reverse polarity, I can only suggest non electrolytic.

On that joule thief, FWBR do nothing, because current flow one way. If you connect the JT output the same way as SSG, FWBR usefull.

Compare all if you have doubt.

I use two stingo before and I get good result. I use three now and I still get good charge and moderately cold battery temperature after fullly charged.

I don't use SSSG or JT as charger because I found stingo more efficient.

[Guruji]

PulsecircuitBR

Hi Sucahyo sorry for too much questions and rough sketch but really want to do the best charger for my batteries. I'm posting circuits to be sure how FWBR should be used. Better AC caps as used on stingo then Electrolyte to BR?
Thanks for your response.

[sucahyo]

For Bedini charger a BR and cap would be ok and maybe one of the reasons as you've said but for JT it gives out DC current cannot be hooked to a BR maybe a cap only then?

My JT produce pulsed current. A switched coil produce huge spike, followed by much smaller reverse spike. While 7imix mention almost no reverse spike for stingo, adding cap isolated FWBR still double the efficiency.

But if you connect load negative to source negative, FWBR may not be useful.

I once did a relay for a swapper but there were too much sparks when switching the batteries and I discontinued to use it.

For what implementation is that?

I don't notice that, I don't see spark. When I turn off the load, the source is disconnected too. When I turn on the source, the load get connected almost the same time, which should be faster than cap dumping time. There is less time for the output to build up voltage to make spark, especially because the source power is just being connected.

[Guruji]

relay swapper

I think it happen because you charge with single diode. I think JT or Bedini solid state will also retain battery charge if you use cap isolated FWBR.

Mine had around 7V charge too. When I open the cell, I see only 3 cell are good, the other one shorted because of heavy corrotion...



I try once with old version of stingo and produce result of declining battery.
YouTube - Swap Charging front and back battery

I use relay with 4 contact point, FRM3-4B5. I use toggle switch but should be easy to add 555 control, just being lazy .

If I try it again, I would use latest circuit and add ungounded water connect to load positive.

For Bedini charger a BR and cap would be ok and maybe one of the reasons as you've said but for JT it gives out DC current cannot be hooked to a BR maybe a cap only then?

I once did a relay for a swapper but there were too much sparks when switching the batteries and I discontinued to use it.

[sucahyo]

I tried to run cfl with stingo today again, and it works just like it worked yesterday, and it works well with one weak transformer, i even think of buying 2*9 25 VA transformer that i used for building one 12/220 inverter a few month ago, to test stingo and cfl with it too...Also drains 220 mA, as yesterday, so we have confirmation that it works well indeed !

ok

Full brightness at close to 1 watt is something you should brag more .

I tried bingo too with cfl, but it drains too much current and frequency goes up and down too wild, so i gave up trying to find sweet spot for cfl lightening with bingo, and why should i in the first place since i can do that so successfully with stingo ?

I see. thanks for the info.

I find that bingo can power car coil easier today.

I checked on bingo thread but i cant find where you demonstrated bingo lightening cfl there ?

Sorry, wrong word, the video show how I swap the amp meter.


BTW, my on of my double stingo charger transistor die yesterday, because I left it run without load too long. I replace KSC5027 with 2SC3866. It turn out bad, now the total output is only 300mA, while it is 450mA previously. I don't know if this just coincidence or show how supperior KSC5027 is.

[cikljamas]

Worse, my record is full brightness at 240mA but never been able to reach it again. Mostly 500mA now.

I tried to run cfl with stingo today again, and it works just like it worked
yesterday, and it works well with one weak transformer, i even think of
buying 2*9 25 VA transformer that i used for building one 12/220 inverter
a few month ago, to test stingo and cfl with it too...Also drains 220 mA,
as yesterday, so we have confirmation that it works well indeed !

It is weird that bingo can not be used....
Check my video on bingo thread on how I do it .
.

I tried bingo too with cfl, but it drains too much current and frequency
goes up and down too wild, so i gave up trying to find sweet spot for
cfl lightening with bingo, and why should i in the first place since i can do
that so successfully with stingo ?

I checked on bingo thread but i cant find where you demonstrated
bingo lightening cfl there ?

Rgds!