Stingo Solid State Battery Charger

[7imix]

I built my first slayer exciter. It has 6 turns on the primary and 575 turns on the secondary. The output doesn't seem to be hugely impressive, but it is fun.

YouTube - Slayer exciter

YouTube - Slayer exciter scope shots

I tried driving it with the stingo, but the primary is too small, I don't think it has enough inductance or capacitance to produce the spike required to tickle the transistors. Or something. I wonder if adding a capacitor in series with the coil would help. I really hope someday to be able to understand the method by which the stingo operates so I can have more success oscillating a coil without it just happening by luck.

Perhaps instead of a capacitor in series I should use an iron core coil to run the oscillation and put the slayer primary across the radiant output part of the circuit. However this would defeat the purpose which is to somehow drive an air core coil with the stingo, to get the frequency up much higher, hopefully up in the megahertz.

[7imix]

Sucahyo, I know you mentioned one time using a transformer that you removed the iron core from. I tried this:



But I can't get it to oscillate. Any suggestions? Thanks

[penno64]

Hi 7,

Great work.

I blew my TIP32c trying to get fancy with an NST in series with the L2 coil
of the slayer.

Can you tell me how to reduce the size of my video files so I can post to youtube.

With the slayer and stingo, I am uncertain where to connect the base of the L1 coil.

In small sec circuits, I connect L1 base to the Base of the transistor.

Regards, Penno

[cikljamas]

Tonight i made my first stingo according Sucahyo schematic, i tried
several different transformers and on the output i got 11.50 V...
It is about 1 V less then it is in battery...I made it by schematic for
battery charger, and i dont see how that works...When i tried to
put 1 microfarad cap 220 V it could not work with that, when i
skip that cap. then i have as i said 11.50 V on the output and i
do not know what is this all about...That is schematic with greatz
on the output...Is there anyone who could help here with some
little information ? Also i tried to figure out how i could implement
this schematic as Sucahyo already suggested me to bedinis circuit,
but that is still challenge for me...

[cikljamas]

Now, i skip the greatz, and now i have almost 12 V on the output and
it seems that minus goes after 500 k pot., in schematic after 500 k pot.
is plus ???...

[cikljamas]

Aha, i solved the problem...but only because i have in my storage hole
bunch of transformers, and finally one of those transformers do his
job...Only i think very hard and i can not find the answer how you other
guys with much less things in your storages find your answers in similar
situations ???...And now as i am watching how my big battery charge
my small one with this sucahyo charger i am asking myself : Is it better
solution then bedini ssg...it seems much alike bedini...but i want OU...
I cry....

[sucahyo]

I tried driving it with the stingo, but the primary is too small, I don't think it has enough inductance or capacitance to produce the spike required to tickle the transistors. Or something. I wonder if adding a capacitor in series with the coil would help. I really hope someday to be able to understand the method by which the stingo operates so I can have more success oscillating a coil without it just happening by luck.

I found that my TIP32C&TIP31C work on a coil that refuse to oscillate with TIP32C&TIP3055. I think the choice of transistor matter. For low power application maybe we should power transistor with lower rating.

How about adding another coil in series just to make it work?

Sucahyo, I know you mentioned one time using a transformer that you removed the iron core from. I tried this:

But I can't get it to oscillate. Any suggestions? Thanks

Will it osccilate with the core? what is that coil primary resistance value? Try using a new transistor. I found that two implementation may have different output even if they use the same type of transistor.

I blew my TIP32c trying to get fancy with an NST in series with the L2 coil
of the slayer.

Can you tell me how to reduce the size of my video files so I can post to youtube.

Be careful .

Video file size is greatly influenced with bitrate, especially video bitrate. I think 5000kbps is high enough for youtube. To convert video you can use mediacoder or tmpegencoder. Some prefer virtualdub to add some batch effect or for trimming.

With the slayer and stingo, I am uncertain where to connect the base of the L1 coil.

In small sec circuits, I connect L1 base to the Base of the transistor.

The tall coil? if it do not change result, to the battery positive.

Aha, i solved the problem...but only because i have in my storage hole
bunch of transformers, and finally one of those transformers do his job...Only i think very hard and i can not find the answer how you other guys with much less things in your storages find your answers in similar situations ???...And now as i am watching how my big battery charge my small one with this sucahyo charger i am asking myself : Is it better solution then bedini ssg...it seems much alike bedini...but i want OU...
I cry....

Sorry, I don't know what cause your circuit to only produce very little voltage. Even my 3V version produce 50V or more. Maybe transformer do have big role in stingo.

Most of the handmade coil I use now is made of 5 meter network wire.


Wether this circuit is better or not, I am not sure. But my 60% conventional efficiency is higher than most SSG. With single stingo I can get 40% but I use 20% for real application.

Maybe the efficiency is not much, but I have result where swapping front and rear battery on each 30 second only reduce the monitored battery voltage a little:
YouTube - Swap Charging front and back battery

[sucahyo]

things to protect PNP

I build a new circuit with compact size. I break two PNP on this new circuit, and all because I short something accidentally.

To prevent this from happening, I now either put a load or neon bulb in the output part. This prevent HV build up in the output that can kill the PNP. And I always turn off the power before changing output load.

[Godfrey]

Try adjusting the pot a little and then opening and closing the circuit, and repeat.

Meant to thank you for this tip, 7imix, it helps!

Nice idea trying a mot. I'll go look for a microwave today to try this.

The Tesla coil/HV crowd makes discouraging noises about using MOTs. They’re only supposed to give out around 2kV. They aren’t current limited, and so very lethal to make mistakes with.

The iron core is preventing the transformer from oscillating quickly. I'm betting air core coils like the slayer coil are going to be best for our purposes.

I noticed Ghost used MOT coils liberated from their core in the Gray Tube thread. You have to grind off the welds to do so.

…One has to average in the time that the circuit is off as well, so increasing the frequency (assuming the pulse duration remains the same) increases the overall duty cycle.

Thanks for the data! I have noticed, however at a lower frequency and higher duty cycle that the output current is larger.

Moving to air core coils and increasing the frequency is likely to help boost the useful output quite a bit.

Yes, air coils do seem the way to go for getting the highest resonant frequency. A slayer type coil looks interesting. I’ve been meaning to try my hand at making a pancake coil too.

@Sucahyo – How about a picture of one of the air coils you’ve been winding for Stingo use?

Can I ask all of you if the Stingo charger will actually charge/desulphate a run down battery of sorts.

Hi Parav, I’ve had luck reviving a 12V marine deep cycle lead-acid battery with the Imhotep relay charger. The process was very slow, however – took almost a whole week of constant charging. The frequency is low, but the pulses are sharp. I’m hoping the Stingo charger will do the same thing, but quicker. You can count on me testing this out when I get my coil issues worked out. I’ve got 4 old 6V golf cart batteries to revive.

My charger now consist of two stingo and one imhotep relay charger.

How come??! What does that circuit look like? Doesn’t the relay slow things down?

Is it better solution then bedini ssg...it seems much alike bedini

Hi Cikljamas. For a real battery charger why bother fiddling with a bicycle tire engine with weak magnets? I haven’t done an ssg circuit yet, but have heard reliable reports that the engine’s got no torque. The whole idea of using an engine just to time/trigger coil pulses goes against my practical sensitivities. It’s no more than an educational/demo tool. Now Bedini’s window motor is something practical, sure – charge and swap its own backup battery, but why use it as your battery charger?

This Stingo circuit can drive a load and charge a battery at the same time too, or you can just charge the battery with 100% of the radiant output. It can have a very small footprint, is solid state and relatively quiet too (depends – starter coils are noisy).

Maybe transformer do have big role in stingo.

That’s becoming very apparent in my experiments – the big trick is to happen across the ideal coil for the job, and I’m still searching.

- Godfrey

[cikljamas]

originally posted by sucahayoSorry, I don't know what cause your circuit to only produce very little voltage. Even my 3V version produce 50V or more. Maybe transformer do have big role in stingo.

Most of the handmade coil I use now is made of 5 meter network wire.


Wether this circuit is better or not, I am not sure. But my 60% conventional efficiency is higher than most SSG. With single stingo I can get 40% but I use 20% for real application.

I suffered today a lot with your stingo and i dont see how you can use for
transformer just 5 m of wire, my transformer is about 1200 turns of 23
awg, and i easy adjust stingo with him (transformer) between 12 and 40 V...
What is the best voltage for charging battery ?...I know that it is generally
about 14 V, but is it the same case with stingo or you use higher voltage
when you charge battery with stingo ? Could you give me the example
for using stingo with 24 V and higher then that to ?...Those transformers
with 5 m of wire, is there in this thread attachments with some photohraphs
where i could see one of them ?...I got big hope for your stingo though i
already suffered a lot about that as i said before...And one thing more :
What about amps ?...How much mAmps should i have achieve with stingo
to be sure it works well ?...Sorry for such much questions but if you answer
to half of it i will be satisfied...Thanks in advance !!!
P.S. I am surprised that you wrote : "Maybe transformer do have big role
in stingo "...How do you meant maybe ?

REgards !

originally posted by Godfrey Hi Cikljamas. For a real battery charger why bother fiddling with a bicycle tire engine with weak magnets? I haven’t done an ssg circuit yet, but have heard reliable reports that the engine’s got no torque. The whole idea of using an engine just to time/trigger coil pulses goes against my practical sensitivities. It’s no more than an educational/demo tool. Now Bedini’s window motor is something practical, sure – charge and swap its own backup battery, but why use it as your battery charger?

This Stingo circuit can drive a load and charge a battery at the same time too, or you can just charge the battery with 100% of the radiant output. It can have a very small footprint, is solid state and relatively quiet too (depends – starter coils are noisy).

Hi Godfrey, yes i agree with you 100 % ! I just have to improve my stingo,
and the biggest challenge is to find out what kind of transformer to use,
and how to make one, dont you think so ? Maybe you are closer to that
answer than me, if you are, come on, bring it to light !

REgards !

[cikljamas]

Sucahyo, have you ever tried to oscillate stingo with combination of
2n3055 and bd317 ?

[cikljamas]

After all i just do not understand the point of this circuit...
Now i must ask if there is some easy explanation for dummies ?
If i connect one coil of the transformer then stingo drains too much(700 mA)
If i connect other side then i dont know what i ve got with that...
It must be some clear explanation about transformer, transformer is the
key i hope...
This stingo makes me crazy...

[Godfrey]

…the biggest challenge is to find out what kind of transformer to use…

the big trick is to happen across the ideal coil for the job

and how to make one

Moving to air core coils and increasing the frequency is likely to help boost the useful output quite a bit.

I'm betting air core coils like the slayer coil are going to be best for our purposes.

Yes, air coils do seem the way to go for getting the highest resonant frequency. A slayer type coil looks interesting. I’ve been meaning to try my hand at making a pancake coil too.

@Sucahyo – How about a picture of one of the air coils you’ve been winding for Stingo use?

dont you think so ? Maybe you are closer to that
answer than me, if you are, come on, bring it to light !

and I’m still searching.

No light bulb illuminated on top of my head about the right coil yet, but you might want to avail yourself more carefully of the information already shared in this thread so far, Cikljamas

Sucahyo, have you ever tried to oscillate stingo with combination of 2n3055 and bd317 ?

I just got some MJ2955’s to compliment my 2n3055’s, which I've yet to experiment with. But why not?...the specs are close enough - give it a try and let us know. Wouldn’t it be better to pair a bd317 with a bd315 instead?

- Godfrey

[sucahyo]

The Tesla coil/HV crowd makes discouraging noises about using MOTs. They’re only supposed to give out around 2kV.

I wonder if it really true. Mine is 24V/240V. with 12V it should only reach 120V, and yet it can reach above 1000V directly without capacitor help. If MOT reach 2KV normally, then it should be higher than that with digital.

They aren’t current limited, and so very lethal to make mistakes with.

Stingo with HV capacitor can be lethal too. I got jolted enough to yell when my hand happen to bridge it. And this is with a coil that do not have secondary.

The output is HV, so be really carefull.

Thanks for the data! I have noticed, however at a lower frequency and higher duty cycle that the output current is larger.

I wonder if it related to the coil core?

A slayer type coil looks interesting. I’ve been meaning to try my hand at making a pancake coil too.

flat coil? I fail to make stingo oscillate with any self cancelling induction coil. Maybe because stingo rely on coil second spike.

I think a single layer selenoid is best.

@Sucahyo – How about a picture of one of the air coils you’ve been winding for Stingo use?

For my frequently use air coil, I don't wound it my self:

How come??! What does that circuit look like? Doesn’t the relay slow things down?

Timing seems independent although they may powering each other. The use power in parallel but the radiant output is joined with diode bridge.

I suffered today a lot with your stingo

I am worry about that. I hope it don't make you suffer next time.

i dont see how you can use for transformer just 5 m of wire, my transformer is about 1200 turns of 23 awg, and i easy adjust stingo with him (transformer) between 12 and 40 V...

More turn do not mean it would produce better radiant. We have to consider current too. Too many turn have high impedance and can reduce current which in turn reduce output power.

What is your circuit current consumption? Is your coil multilayered?

What is the best voltage for charging battery ?...I know that it is generally about 14 V, but is it the same case with stingo or you use higher voltage when you charge battery with stingo ?

Not like that. Any radiant circuit will adjust its output voltage with load. Even if it produce 400V with neon bulb as load, it will only produce 13V or lower if you use it to charge a 12V battery.

I use same coil, same circuit to charge 1.2V nicad, 12V SLA or two 12V in series. It do not matter since the circuit will adjust its output voltage. It all charge with less heat than conventional charger. faster too.

Consider any radiant to produce constant power. Give it low impedance load it will produce low voltage. Give it high impedance load it will produce high voltage. Which kind of load is more efficient will differ.

What about amps ?...How much mAmps should i have achieve with stingo to be sure it works well ?

To charge other battery make sure to reach 350mA output if the amp meter is put in series with charged battery. I achieve this by combining output.

My circuit consume around 500mA each at 12V.

Sorry for such much questions but if you answer
to half of it i will be satisfied...

No problem.

P.S. I am surprised that you wrote : "Maybe transformer do have big role in stingo "...How do you meant maybe ?

Each coil should need different resistor value to work best. So maybe you just need to find out the correct value for all resistor of the complete version.

It seems a simple selenoid is better than any weird shaped coil. Power is proportional to coil impedance but there is limit.

Notice that sometime the simple version can not be used to charge a battery or power a load. We may need to add more resistor to complete the circuit.

Sucahyo, have you ever tried to oscillate stingo with combination of 2n3055 and bd317 ?

BD317 is NPN?

I found that 2SB507 (maybe BD317 pair?) perform worse than TIP32C. TIP2955 is worse than TIP32C but better than 2SB507. But I am not sure because I just realize now that transistor can be half broken but still work.

[sucahyo]

If i connect one coil of the transformer then stingo drains too much(700 mA)

Why 700mA too much? my car coil can draw up to 1.2 Amp.