Stingo Solid State Battery Charger

[Guruji]

Stingo

I use any stingo I had for electrolysis. electrolysis cell replace charged battery. I think the one diode recovery version will work better. Try your current one.


Unfortunately, that is normal in stingo circuit. You have to add heatsink and maybe add fan too.

What is the current consumption? 1 Amp would be too high. I usually limit to 500mA input on each stingo.

To get high output current, I use more stingo each with low current, instead of running one with high input current. But in case you have good cooling system, I think using one is ok. But watch the coil temperature too.

Thanks for response another thing is that first circuit worked even with 20ma but the second one needs least 120ma to oscillate.
Why is this maybe the coil thickness and toroid variation?
I tried the stingo to the cell but no bubbles emerged. Which is the one diode recovery version circuit?
Thanks.

[sucahyo]

Thanks for response another thing is that first circuit worked even with 20ma but the second one needs least 120ma to oscillate.
Why is this maybe the coil thickness and toroid variation?

With load? While different coil / core do change behaviour, I think the potentiometer combination can also change behaviour.

Change the 100K and 30K resistor bellow with 100K potentiometer and see if you can sustain the oscillation at lower frequency.

Reducing input current also increase frequency of stingo. And 7imix found there is limit on how high the frequency can go. Maybe ferrite allow higher frequency. 7imix is more fluent in this. He has to alter other potentiometer to allow the circuit to work at higher frequency, and at the same time, lower input current.

I tried the stingo to the cell but no bubbles emerged. Which is the one diode recovery version circuit?
Thanks.

Electrolysis need current. try raising the input to 300mA. If you still see no bubble, check if the circuit still running.

I usually test it with tap water, without any catalyst.

Here is one diode version:

[Buddybill65]

Stingo Question

Hi, Where can I get the relay coil for this circuit at the top of the page?
Also can anyone tell me what kind of circuit this video links to?
YouTube - 64298's Channel
I want to replicate it. Thank you.

[7imix]

Hi, Where can I get the relay coil for this circuit at the top of the page?
Also can anyone tell me what kind of circuit this video links to?
YouTube - 64298's Channel
I want to replicate it. Thank you.

You can use lots of different kinds of coils with stingo... You have to play around to find a coil with the right inductance and sweep around with the potentiometers until it oscillates. The first coil I used was a car ignition coil (for making sparks with a spark gap across the secondary), and I have used transformer coils extracted out of wall wart transformers, toroids I wound myself, and lots of different kinds of coils. Check my YouTube videos to get an idea of what coils that I have used successfully.

[sucahyo]

Thanks 7imix.

Hi, Where can I get the relay coil for this circuit at the top of the page?
Also can anyone tell me what kind of circuit this video links to?
YouTube - 64298's Channel
I want to replicate it. Thank you.

Stingo do not require relay coil but can use it. But I think you refer something like Imhotep relay charger?

I tried relay based circuit once but leaving it because:
- problem with sparking (wasting, too big, heat, etc.)
- weak output
- slow charging
- noisy

I don't know what kind of circuit used in that video, look interesting. what kind of conclusion you have from that video Buddybill65?

[Guruji]

Stingo

Hi Sucahyo I had changed that 100k resistor to a pot but not much difference. Most efficient 100ma. I was thinking that I would use this circuit to an earth battery .
Anyway thanks.

[sucahyo]

Hi Sucahyo I had changed that 100k resistor to a pot but not much difference. Most efficient 100ma. I was thinking that I would use this circuit to an earth battery .
Anyway thanks.

I see, thanks.

I now use this version:


For 3 terminal stepper motor utilizing only two terminal:


Good luck with the earth battery .

[kcarring]

My First Stingo

I finally got some time to try and play with The Stingo Circuit!

Should be fun.

I do not have a torroid wound yet, but I through in an inductor for the purpose of setup.

I have a couple of questions, but it might be easier to look at what I have layed out on the breadboard.

Please click on the picture for the "bigger picture", as you will then be able to read some notes and values.

ImageShack® - Online Photo and Video Hosting

Further:
All my diodes are 1n4001

I did not have the exact variable resistors so I have approximated for now... but my impedence on the PNP to the coil start and NPN collector is limited by a 47k (instead of 100k) variable resistor, that might be a problem?

What value and type of capacitor on the ground end of the charging battery should I be thinking of? I just put a ceramic 104 in there as placement.

Thanks for any pointers!

Holy Diodes Batman!

[sucahyo]

Great .

How much input current with that coil?

Using 47K variable resistor is not a problem. The 4K7 one maybe too small if you want to run it at higher frequency.

The capacitor value still arbritrary right now. I don't know if it need to be bigger or smaller. Try to compare the output current with one diode version. If you can achieve almost the same output current then it is good enough.

[Guruji]

Latest version

Hi Sucahyo very nice regarding the latest version is simpler to build. Is this more efficient? I will build this too. Regarding resistors only 100ohm 2w and the others 1/4w?
Thanks

[kcarring]

Great .

How much input current with that coil?

Using 47K variable resistor is not a problem. The 4K7 one maybe too small if you want to run it at higher frequency.

The capacitor value still arbritrary right now. I don't know if it need to be bigger or smaller. Try to compare the output current with one diode version. If you can achieve almost the same output current then it is good enough.

No real luck so far... The first inductor provided zero current to charge with, and about 20 mA input.

The second inductor, a ferrite torroid, with about 20 ga wire, perhaps about 20-30 winds (from a power supply) - same story, no current to charge, no draw, loss of voltage.

I'll keep trying tho.

[kcarring]

I completely do not understand why you would have a full wave bridge rectifier after a diode. One wire. You've already rectified, like in the SSG, no need to rectify again, and you'll never get full wave, because as i see it, there is no full wave! Not to mention the loss you'll suffer... before the first diode my circuit measures 6.37v. My solar cell is outputing 6.38v. By the time it goes past the second diode in the FWBR, you got 5.86v. It'll run all night under a lamp (100 watt), or... if I hook it up to a 6v battery, it'll drain the battery - and no charging takes place.

I must be making some sort of fundamental error on this circuit i guess. As it stands my solar cell, when hooked directly to my battery charges much, much, much better than when running through the circuit, in fact the circuit does not charge at all. It just doesnt draw current or pass current into the battery and there are substantial voltage losses as well.

[7imix]

Kcarring, you need to adjust the resistance until the circuit oscillates. If you have a scope you can see if it is oscillating. If it won't oscillate, some parameter needs to be changed. One trick to try is disconnecting and reconnecting the battery after changing the resistance. Sometimes the kick from the circuit being closed gives it a jump start and it oscillates.

[sucahyo]

I completely do not understand why you would have a full wave bridge rectifier after a diode. One wire. You've already rectified, like in the SSG, no need to rectify again, and you'll never get full wave, because as i see it, there is no full wave! Not to mention the loss you'll suffer... before the first diode my circuit measures 6.37v. My solar cell is outputing 6.38v. By the time it goes past the second diode in the FWBR, you got 5.86v. It'll run all night under a lamp (100 watt), or... if I hook it up to a 6v battery, it'll drain the battery - and no charging takes place.

The purposes of FWBR is not to increase output but to allow normal electricity that ride along the bounce of spike. I think this require microfarad capacitance.

When I only use single diode, I experience battery that no longer accept charge. With FWBR, I don't experience it. If you browse battery charging thread, you will read a lot people mention unusable battery if charged with radiant alone.

Some get good result by alternating radiant charging with normal charging. That is the purposes of FWBR.

Here is what I use for two circuit combined:



Here is my experiment results comparing output:
Stingo experiment with 3V battery load.
single diode negative of charged battery to positive of source = 110mA, with load consume 220mA (Ef=50%).
partial cap isolated FWBR = 100mA, consume 270mA (Ef=37%)

Notice that FWBR produce worse efficiency, but I will still use it because FWBR give longer live to battery.

I must be making some sort of fundamental error on this circuit i guess. As it stands my solar cell, when hooked directly to my battery charges much, much, much better than when running through the circuit, in fact the circuit does not charge at all. It just doesnt draw current or pass current into the battery and there are substantial voltage losses as well.

Yes, unfortunately, direct charging give better charge for battery with smaller voltage. The benefit of this stingo circuit is it charge much cooler and allow the battery to get more voltage. You should be able to charge 12V battery with 6V solar cell.

I think you should experiment on coil and resistor combination, to force more input curent. Put the amp meter in the input and try to get as high input current as possible with maximum potentiometer value. 4K7 one play big role.

If you already hit minimum value of the 4K7 potentiometer, change 97ohm with smaller value. You need higher watt for this resistor because it get heat up. But I think you can use 1/4 watt with 6V input.

[kcarring]

Thanks, lots of help there!

Your a good man, I wish you well.