Stingo Solid State Battery Charger

[cikljamas]

No, it just means that in normal PNP use my stingo consume 1000 mA, and in reverse PNP use my stingo consume 450 mA. 1000/450 = 2.22. That is more than 100% improvement.

I just want to say twice more efficient.

But, what i did wrong not to be able to notice such a great improvement
when i switched PNP in reverse mode ?...I left that one stingo like that
(in reverse mode), but since it is 6 a.m. here, i soon go to sleep (who
normal goes to sleep in that time ?..no one !) so i am going to search
this thing today after a little bit of sleep...But, while i am still awake
i have to ask you how come that i noticed in fact opposite effect than
what you just wrote :

In my last post i just explained that there is more consumption of
current with reverse mode, and you said total different thing :
2,2 times less consumption of current...

Help me to become sober after this confrontation of opposite notations !
Maybe some hints could help...
And final question : how come your schematics are not in reverse mode ?

[sucahyo]

And final question : how come your schematics are not in reverse mode ?

No, schematic in this thread show reverse mode. The arrow point to wrong current direction. normal mode should have the arrow point to negative of the source battery.



nvisser point out this when he look at my photos:





Some first schematic show normal mode while I actually solder it in invert mode.... The schematic on old post still not corrected:
http://www.energeticforum.com/renewa...0-2-1-5-a.html

The schematic in this thread use reversed PNP.

[sucahyo]

lower standing voltage after charging

I found this interesting.

I try to charge zinc carbon 1.5V battery today. Initially it is 3.14V and 0.28A.


After charging it become 3.09V and 0.67A.


So, battery can actually reduce standing voltage too after charging. I guess we can not rely with voltage to measure state of charge.

After resting and charging, now hold at 0.9A. Should hold for a month or so for remote control...

[cikljamas]

No, schematic in this thread show reverse mode. The arrow point to wrong current direction. normal mode should have the arrow point to negative of the source battery.

The schematic in this thread use reversed PNP.

Oh, well, now it make sense, but still puzzled how come you consider
reducing the consumption of current in reverse mode as rising of the
efficiency too ? My measurements do not prove that, efficiency stay
the same, we just have to adjust pot. to higher resistance to reduce
consumption of current in normal mode, but it doesnt mean that
efficiency changes at all, at least according my notations...Maybe i
miss the point somehow or i just have to make more experiments...

Does this mean that if i change this bedini window cole circuit in the
same way as you did with stingo (reverse PNP) i am going to reduce
current consumption just like it is case with stingo ?

I try to charge zinc carbon 1.5V battery today. Initially it is 3.14V and 0.28A.
After charging it become 3.09V and 0.67A.

So, people do not throw away zinc carbon batteries !
Stingo is superb for that purpose too !!!

How many times you estimate we could recharge these non rechargeabled
( )batteries ?
And what current input you use for 1,5 V batteries
and what current input you use for 9 V batteries ???

Rgds !

[Guruji]

My Stingo

Today I finished my stingo circuit and tried it on two dead batteries. With amazement it charging the other with only 4ma
I am posting my circuit photo thanks to sucahyo help.

[sucahyo]

Oh, well, now it make sense, but still puzzled how come you consider reducing the consumption of current in reverse mode as rising of the efficiency too ? My measurements do not prove that, efficiency stay the same, we just have to adjust pot. to higher resistance to reduce consumption of current in normal mode, but it doesnt mean that efficiency changes at all, at least according my notations...Maybe i miss the point somehow or i just have to make more experiments...

You mean you reach similar efficiency at high frequency? Well, I only have one digital amp meter, so I conclude normal as less efficient when I see result.

Another reason is PNP will flow current is dead. When the circuit is not oscillating, the PNP will kept drawing current from the source without powering the load. I think duty cycle of the NPN would be different. maybe 50% at normal mode and 1% in reverse mode. Godfrey and 7imix can confirm this?

Another reason is I use low frequency in real application.

Does this mean that if i change this bedini window cole circuit in the same way as you did with stingo (reverse PNP) i am going to reduce current consumption just like it is case with stingo ?

No. different functionality, reversing will make it no longer work. Stingo is use PNP as trigger. The windows cole circuit?, use PNP as switch.

Actually I am thinking of doing similar configuration, with stingo:


I will try this today.

How many times you estimate we could recharge these non rechargeabled ( )batteries ?
And what current input you use for 1,5 V batteries
and what current input you use for 9 V batteries ???

Thanks . recharged non rechargeable battery pnly usefull for something that do not draw much current like remote or calculator. But bigger one like AA or D-cell can lit torch light decently.

I don't put attention to the current I put to the battery. I just let it stay in my double stingo charger until it get hot. If it is nimh or nicad or SLA until it get warm. Current should be between 500ma to 750A.

Today I finished my stingo circuit and tried it on two dead batteries. With amazement it charging the other with only 4ma
I am posting my circuit photo thanks to sucahyo help.

Nice achievement .

I can't see it well, is that FWBR version? if you intent to use it for battery charging or reviving, use the FWBR version.

[cikljamas]

Actually I am thinking of doing similar configuration, with stingo:


I will try this today.

Wow, great expectations ! Should i try this today too, or better to
wait your impressions first ?

I don't put attention to the current I put to the battery. I just let it stay in my double stingo charger until it get hot. If it is nimh or nicad or SLA until it get warm. Current should be between 500ma to 750A.

And i thought 300 mAmps is to much , but maybe it is optimum for two
hours charging, but if your output to the battery is 500 or 750 mA, than
you have to stop charging after half an hour, because this is quite enough
time for batteries to become hot with so much mAmps, am i right ?

[sucahyo]

Wow, great expectations ! Should i try this today too, or better to wait your impressions first ?

Prepare for non working circuit if you try, I still not sure about the connection.

And i thought 300 mAmps is to much , but maybe it is optimum for two hours charging, but if your output to the battery is 500 or 750 mA, than you have to stop charging after half an hour, because this is quite enough time for batteries to become hot with so much mAmps, am i right ?

Only on zinc carbon. When I forget to stop charging after it already full, the nimh and nicad do not get that hot. Still colder than cheap commercial charger.

I charge 2500mAh nimh in two hour. But that kind of amperage is not high, compare it with this:
http://battery.sanyo.com/en/spec/cadnica/N-1700SCR.pdf

charging 1700mAh under an hour require 2600mAh ...

[sucahyo]

Stingo window cole test result = fail. I can only run it with single diode which defeat the purposes of having enclosed coil.


BTW, can anyone having scope check if using two PNP in tandem/paralel/leg by leg will produce double spike?

[Guruji]

FWBR version?

Hi Sucahyo I did this one posted is it for charging or there's another?

[sucahyo]

Hi Sucahyo I did this one posted is it for charging or there's another?

If you have two amp meter, see if this circuit bellow produce better result:


My feeling tell me this one better. But I only be sure after testing with two amp meter.

[sucahyo]

Here is video showing the effect of HV secondary to neon bulb brightness and charging.
YouTube - Stingo car coil HV connection choice

If you use car coil, short the secondary or connect to the load positive.

[sucahyo]

Inspired by Farmhand pulse charging, I try to charge 12V battery with 3V sparker:




The neon end up lit all the time. It is harder to make the neon pulsing, but can be done....

Video:
YouTube - HV pulse charging


May not be efficient, but still fun .

[Guruji]

Stingo

If you have two amp meter, see if this circuit bellow produce better result:


My feeling tell me this one better. But I only be sure after testing with two amp meter.

Hi Sucahyo regarding capacitors we're always talking 1uf 250v? When testing if it's working what do you do a neon?or a meter? and where to the output?
Thanks

[cikljamas]

stingo cfl

Sucahyo, could we light the cfls with stingo somehow ?