Yes.

Yes.

Yes. The max collector voltage of a TIP31 transistor is 40V to 60V. The max for a high voltage Mosfet is hundreds of volts and it has an avalanche diode built-in to protect it.

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Uncle $crooge

 

Thanks
Just read through wiki, is any diode that is used to protect the circuit from back EMF called avalanche diode?

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bananasiong

 

Actually Most REAL Stunguns just use Transistors and a transformer (T1) for the Initial Stepped-up Voltage of 200 to 400 volts.

Than an SCR to trigger this 200 to 400 volts to pulse this into the second transformer (T2) (a Trigger Coil) to get the Really High Output voltage.

Ususally Both these transformers are Custom Made.
"But Especially T2".

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I agree chemelec, that's what I would do if I wanted to build a stun gun.

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An avalanche diode breaks down and conducts at its avalanche breakdown voltage and holds the voltage like a zener diode. Mosfets have it built-in.
This diode will protect the Mosfet from short duration high voltages at fairly high currents. It has a much higher voltage across it when it breaks down than a diode across an inductive load which is a "free-wheeling diode" so the avalanche diode gets very hot when it is working.

Attached Thumbnails

 

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Uncle $crooge

 

I'd step up the output of an invertor through a transformer and then use a Cockroft-Wolton multiplier to step it up again as DC.

 

That will Produce a "Continuous High DC Voltage", and yes it will give someone a shock.
But it is NOT an Effective Stun Gun.

Stun Guns Produce Pulses or Bursts of HV power.
This gives them a MUCH Greater effect to Induce Pain so as to disable the person quickly.

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OK, I'll convert the rear wheel of my bike into a Wimshurst generator and collect the output into a couple of 4 gallon Leyden jars. I'll drag a grounding strap and have a large spike out the front as a corona emitter.

What it would lack in portability it would gain in "What the #$%^ is that?!?"

 

They are crap! - convert it to a Van De Graff generator instead, MUCH better!

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I've often thought an electrophorus mounted in the soles of jogging shoes could generate a non-trivial electric charge. The action of of lifting your foot from the ground while walking or running would be the activity that separates the top plate from the dielectric cake, where you could then take the charge off. When you put your foot down, an electrical contact could be made between the top plate and the base to reset it to deliver another charge.

 

or even better, run a generator to power a tesla coil

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We need an electrostatics forum on this site, there is just too much fun to be had there!

 

i agree, a high voltage section would be great!!!! especially for me, i love high voltage stuff!! but i think this has been dicussed here before?

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2. If it's mushy, It's biology.
3. If it doesn't work, It's physics.
www.laserchat.org IRC chat for laser and electronic related stuff.

 

I remember being told in school (as have many others) that "static" electricity and an electric current were two different things, and "static" electricity wasn't useful for anything. Both of these 'facts' are quite wrong, but science books continue to spread the LIES.

 

Damn, read the last post of this thread Do you want new high votage forum? looks like it's not going to happen

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