TheVictim

The circuit in question couldn't even stun a parakeet, I don't see why it deserves 11 pages of responses.

audioguru

We like to talk about and laugh at very old, useless, stoopid, simple little circuits.

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Uncle $crooge

leonar

So, audioguru, stop laughing and show better schematic! Seem you're just adding total post. How about CW (voltage multiplier)? Can it added at the output of the transformer?

audioguru

The wimpy circuit doesn't produce any current. Adding a voltage multiplier would overload it and reduce its tiny output current even more.
I think there are powerful high voltage generators in this thread.

The ignition system on a car makes a pretty powerful spark.

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Uncle $crooge

tom3000

wouldn't it be more effective having also a negative swing ?

would that stun little more or a lot more ?

audioguru

The transformer is too small. Its small size means it has high resistance which causes low current. The transformer will probably arc because it is so small.

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Uncle $crooge

TheVictim

If you wanted to make a truly nasty (and probably illegal as hell) battery powered stunner you could always step up the output of an 120VAC inverter through a diode-capacitor voltage multiplier until the current was below the lethal range. The high voltage appears only at the output, your diodes and capacitors need only withstand 120V.

leonar

I wont use the old and tiny tranformer from old radio used in this beginning thread, i will replace it with 3V to 240V 500mA tranformer ( it has 3V rated written at primary side and 240V written at secondary side), that easily found at WallMart' household electronic equipment. So giving about 6Vac to primary side will produce about 480Vac at the output/secondary side. And by using 1 stage voltage multiplier you will get 960Vdc (480 x 2)

wouldn't it be more effective having also a negative swing ? How this can be done with simpke oscilator schematic ? can you show?

audioguru

The 3V winding of your 240V to 3V transformer probably doesn't have turns so it won't have enough inductance to be used as a transformer's primary winding. It would just be a short circuit.
Try it. It might work.

An inductor produces a high voltage spike when its current is suddenly stopped. Then a voltage multiplier or a negative swing is not needed.

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Uncle $crooge

leonar

So, can we get 960Vac, by using just 6V , above transformer and above 1 stage voltage multiplier?

audioguru

Every transformer is different. They are not designed to be used backwards but you might find one that works. Try it.

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Uncle $crooge

nzoomed

I tried building this today, it seems to work, but i dont get any spark, however i got a tiny yellow spark when shorting with a screw driver, and it makes a high pitch wistle when running, i dont think the transformer is arcing inside, im too afraid to try touching the output

NeoNinja

can anyone help me!!!!!!.... ok heres my problem... i made the mark stoker model stun gun using all the correct parts xcept for well the transformer...
the only way i can get the stup thing to shock me its by repeatedly remove and replace the battery as fast as i can... is that how its suppost to work.. cause im pretty sure im suppost to get a constant shock when its turned on ( battery pluged in ) im using a mouser transforemer btw...

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mneary

Since the most important part of the design is the transformer, why are you surprised with your results?

nzoomed

Well from what ive read, i dont think it is a proper plan, a transistor oscillatro would be better, and you have to have the right transformer, an audio transformer wont be capable of the high voltages, however, this may be able to be used as a primary stage circuit, with a secondary transformer, i like the circuit ive seen here that uses a flash tube trigger transformer, i think that would work quite well