Stingo Solid State Battery Charger

[sucahyo]

Best regards Sucahyo very good circuit I hooked it to a small solarpanel and still works about 20ma. Amazing circuit nice nice
Thanks

Thanks Guruji .

[SkyWatcher]

Hi folks, Hi cikljamas, so I'm going to assume based on the recent photo you posted that it is a joule thief connected to the battery saving device which contains the 5 leds. Sorry if this is off topic, i don't know where else to respond to cikljamas to get more info on his circuit. Though i also plan on making a stingo.
Here's the pic of cikljamas battery saving circuit, which i assume connects to the output of a joule thief, though i see 6 wires on his toroid so maybe hes using the third wire as a secondary takeoff going to his battery saving device. Any added information to clear this up is greatly appreciated, thanks.



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peace love light
Tyson

[Guruji]

Stingo

Yes, I found it by accident.

Some people mention that similar circuit already around. However, I don't think it would produce same result as stingo. Stingo principle is by triggering PNP with coil spike to make it drive the NPN better. Still wondering if we can drive NPN directly with the coil spike.

The use of diode and transistor should be meaningless from conventional point of view so I don't think everyone ever made stingo before.

Best regards Sucahyo very good circuit I hooked it to a small solarpanel and still works about 20ma. Amazing circuit nice nice
Thanks

[SkyWatcher]

Hi folks, Hi cikljamas, thanks for reposting that information and picture about your results.

how close
Hi guys, i am jealous of your forward steps (a little bit), and i have to
ask you 7imix, what are the chances for you and me to make any
progress with this project using your ghetto toroid ?
I`ve been messing around yesterday with this :

http://img339.imageshack.us/img339/2865/howclose.jpg

And these leds are lightened guess with how much uAmps, not mAmps ?
With 10 uAmps !
In two hours these two AA batteries depleted for guess how much mV ?
For four mVolts !
So, how close to OU is this ?
Cheers !

Could you possibly post a circuit, so I can try and replicate it, thanks. It looks like a standard powdered iron toroid? I have a few of those and smaller ferrite ones.
peace love light
Tyson

[sucahyo]

Hi sucahyo you're the inventor of stingo circuit?
Thanks

Yes, I found it by accident.

Some people mention that similar circuit already around. However, I don't think it would produce same result as stingo. Stingo principle is by triggering PNP with coil spike to make it drive the NPN better. Still wondering if we can drive NPN directly with the coil spike.

The use of diode and transistor should be meaningless from conventional point of view so I don't think everyone ever made stingo before.

[Guruji]

Stingo inventor

Hi sucahyo you're the inventor of stingo circuit?
Thanks

[sucahyo]

I use a small magnet near the coil and when it is on it makes a noise

I wonder if magnet slow it down...

Thanks guys for help. My fault was that my meter has the battery low and readings is not given correctly. So the resistance on my toroid was very high. I was over 3ohms so when I took off some coil to bring it down to 1.7ohms now no problem. It worked immediately when connected.
Another thing did anyone tried other capacitors for the full bridge?
Thanks

Good thing to know that stingo won't work with 3 ohm, thanks.

I now use 220uF 200V for my FWBR capacitor. Did not observe anything unusual though.

[Guruji]

Stingo

Thanks guys for help. My fault was that my meter has the battery low and readings is not given correctly. So the resistance on my toroid was very high. I was over 3ohms so when I took off some coil to bring it down to 1.7ohms now no problem. It worked immediately when connected.
Another thing did anyone tried other capacitors for the full bridge?
Thanks

[7imix]

I use a small magnet near the coil and when it is on it makes a noise

Nice, thanks for the tip!

[sniky]

Thanks 7imix.

I agree with 7imix that potentiometer must be changed. Too small gauge may prevent oscillation. I use amp meter to know if there are current flowing in the circuit. Testing voltage of recovery part and hearing with computer microphone. Although sometimes it is above audible frequency.

I use a small magnet near the coil and when it is on it makes a noise

[sucahyo]

Thanks 7imix.

I agree with 7imix that potentiometer must be changed. Too small gauge may prevent oscillation. I use amp meter to know if there are current flowing in the circuit. Testing voltage of recovery part and hearing with computer microphone. Although sometimes it is above audible frequency.

[7imix]

Hi 7imix I tried it first on 4v dead battery then I tried on 12v good battery. The thing is that I did not touch the pots cause I thought it's for all the same.
I have another toroid with thicker coil which works perfectly well. I will adjust the pots and see what happens ok thanks.

You definitely have to fiddle with the pots a lot to get the stingo to oscillate a new coil... Another trick is to try changing the pot position and then disconnecting and reconnecting the battery. The initial current surge sometimes kicks it into oscillation.

Do you have a scope? It's really useful for seeing what the stingo is doing, sometimes it's oscillating at an extremely high frequency and you can't hear it doing anything, sometimes it's drawing a heavy amperage of straight DC, which is a condition to avoid.

[Guruji]

Toroid

Are you sure you played with the potentiometers enough? You may also need bigger pots. It really depends what the inductance of the coil is. If it's small, the resistance needs to be small. If it's large, the resistance can be larger.

What voltage did you try? If it has thinner wire the resistance might be too high and trying a higher voltage may help.

Hi 7imix I tried it first on 4v dead battery then I tried on 12v good battery. The thing is that I did not touch the pots cause I thought it's for all the same.
I have another toroid with thicker coil which works perfectly well. I will adjust the pots and see what happens ok thanks.

[7imix]

Hi guys I did another smaller toroid with thinner wire for stingo but didn't work Why is this maybe stingo needs a thick wire for toroid then?
Thanks

Are you sure you played with the potentiometers enough? You may also need bigger pots. It really depends what the inductance of the coil is. If it's small, the resistance needs to be small. If it's large, the resistance can be larger.

What voltage did you try? If it has thinner wire the resistance might be too high and trying a higher voltage may help.

[Guruji]

toroid

Hi guys I did another smaller toroid with thinner wire for stingo but didn't work Why is this maybe stingo needs a thick wire for toroid then?
Thanks