Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 44 users online :: 5 registered, 0 hidden and 39 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Stun Gun Help

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
Sponsored 
  • Author
    Message

Stun Gun Help

Unread postAuthor: tylermeredyk » Fri Feb 18, 2011 5:54 pm

i was wondering if i can some how get a stun gun circuit however i do live in new york where they are illegal... willing to pay through paypal
  • 0


tylermeredyk
Private
Private
 
Posts: 2
Joined: Fri Feb 18, 2011 5:49 pm
Reputation: 0

Unread postAuthor: jrrdw » Fri Feb 18, 2011 7:46 pm

You can get other legal circuits just as good from either one of our sponsors.

Welcome to Spudfiles.
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6540
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: geardog32 » Fri Feb 18, 2011 8:09 pm

Build one!!
http://www.free-electronic-circuits.com/circuits/stun-gun.html

The 555 circuit puts out a high frequency square tooth wave that can then be stepped up by the transformer. This is all stuff you can get at a rat shack. The thing labeled Q1 is just a transistor, just mind where the base, collector, and emitter go.
  • 0

(\ /)
(0.o)
(><) Copy the bunny to your sig and help him achieve world domination.
User avatar
geardog32
Master Sergeant
Master Sergeant
 
Posts: 173
Joined: Mon Jun 22, 2009 9:20 pm
Reputation: 0

Unread postAuthor: jimmy101 » Fri Feb 18, 2011 8:35 pm

Geardogs link is for a 9V --> 2KV circuit. I doubt it'll actually generate a spark across anything but a miniscule gap. 2KV should jump a ~2mm gap between sharp points but in practice it probably wont.

Best bet is the link jrrdw suggested, or just go with a "legal stun stun", aka a battery powered BBQ sparker.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3130
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Unread postAuthor: tylermeredyk » Fri Feb 18, 2011 9:22 pm

I seen the sparker on launchpotatos but thats in epoxy im looking for something i can mount on a pcb and controlled with a microprocessor
  • 0


tylermeredyk
Private
Private
 
Posts: 2
Joined: Fri Feb 18, 2011 5:49 pm
Reputation: 0

Unread postAuthor: jimmy101 » Fri Feb 18, 2011 9:58 pm

tylermeredyk wrote:I seen the sparker on launchpotatos but thats in epoxy im looking for something i can mount on a pcb and controlled with a microprocessor

A $10 battery operated BBQ sparker is small enough to mount on a pcb and since it has a switch and a power source it can certainly be controlled by a uprocessor. But a smart builder wouldn't even think about putting a HV supply anywhere near a uprocessor and sure as heck wouldn't put it on the same pc board.

Besides, there is a reason the sparker is potted. If it isn't potted there is a good chance it'll instantly turn your uP into a useless piece of junk. Your uP probably wont handle any voltage that is less than about 5V below ground. Your sparker is generating an AC voltage that ranges from roughly -10,000 to +10,000V. That potting is a damned good idea. If you are lucky all the HV will do is reboot the uprocessor, more likely it'll cook it.

Besides, the potting isn't there to annoy you. It is a critical part of the design of the high voltage supply. If you want a spark that'll jump a particular size gap that gap has to be the smallest separation in the entire circuit. Since the HV transformer has input and outputs that are close to each other, and to other circuit components, the only way to keep a spark from happening at the transformer is by replacing the air with a material that has a much higher breakdown voltage.
  • 0

Image

jimmy101
Lieutenant General
Lieutenant General
 
Posts: 3130
Joined: Wed Mar 28, 2007 9:48 am
Location: Greenwood, Indiana
Country: United States (us)
Reputation: 7

Return to Combustion Cannon Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

cron
Reputation System ©'