High Voltage Stun Gun !

[MP1]

There are lots of articles in the "Articles" section which will help explain things. Our high voltage guru here on the site is steven. If you have a question about how the high voltage part of this project works, you can send him a personal message to user name steven and he will receive it. If it is electronics in general that you need help with, I recommend the articles section. There are also several eBooks posted in the Electronic Resources forum. Lots of beginner books and tutorials there.
Hope this helps.

MP

 

[steven2]

thankyou mp im flatterd, even though i collect circuits for a hobby and biuld high voltage stuff , im not  much for technicle exsplanation,s  but  it aint to hard to use a high voltage produceing circuit for things like a stun gun , audio  guru is good at the technicle side of circuits , i just biuld them and upgrade and modify them and include new ideas into them

 

[MP1]

labtyd2, there is my point exactly. Just jump in like steven and you will learn these things by doing. 

The circuit you are asking about is found here:
http://www.electronics-lab.com/projects/science/016/index.html

The technical side: The basis of this circuit is a 9 volt battery used to power a 555 timer which is used as a charge pump to make an AC voltage from the 9 VDC. The 555 triggers the mosfet, which causes a pulse at the primary side of a 1:100 transformer. This ratio increases the AC voltage considerably (100 times at this step). The result is a high voltage at the end of this circuit, which is labeled as a spark gap. This is the point where it is very dangerous. The spark jumping across this gap is HIGH VOLTAGE.

There was a conversation about this project here:
http://www.electronics-lab.com/forum/index.php?board=2;action=display;threadid=835

I taught my son how to make a similar device which was used for an arcing visual effect. This one was simply a 555 charge pump amplified with a 2N3055 and fed to an automotive coil. It was for a project when he was in the 9th grade (several years ago). I got a call before day's end to come pick up the battery pack. As soon as his teacher saw his demonstration to the class, she confiscated the battery pack for safety. However, she did give him an A.  ;D

MP

 

[master-m]

Hi all, i need help here..
i couldn't find IN4007.. any diode can be replaced?
thx in advance

 

[steven2]

a uf4007 high speed diode will do to, i even use them to .

 

[MP1]

Others such as BY133 and P513 can also be used. 1N4007 is rated for 1000 volts / 1 Amp. If you substitute, you should use the same or better.

MP

 

[master-m]

thx~.~!!!

 

[kingo]

how can i build a stun gun which works with 5 or more 9 volt batteries (25 watts or more) ??? i need plans... i would even pay for it. if you are intrested in helping me then drop me a line... [email protected] thanks alot

 

[electronic lover]

hi anyone
I decided to make a high voltage stun gun for me.I think it is very interesting but I have questions about this project:
1-whats the role of j1 in schematic?Is that power button?
2-a picture of audio transformer or 2/220 1VA
3-whats U2 spark gap?
more guidance and help for making pulse tranformer (u3 in schematic) ; a picture of it ; and a picture of ferrite stick.
thanks alot.

 

[gonzo_51]

what do u mean by putting the 2 ceramics in instead of the trans...

 

[wave68runner]

hi,

i ve begon this stun gun but i haven't find a ferrite stick! Can i use a nail ??

i've start(run) it without  U3 transformer, and i ve  just a spark on U2 after 5 seconds?


sorry for my english and thaks for the answers!

 

[audioguru2]

i haven't find a ferrite stick! Can i use a nail ??

If you don't use the correct parts then it won't work very well. It might not do anything except make smoke.

 

[wave68runner]

yes but if nobody sold it, how can i do ?
what 's de purpose of the ferrite ?

 

[audioguru2]

AM portable radios have a ferrite bar antenna. The ferrite bar might make a good core for a high frequency transformer. Get one from a broken old AM radio.

A transformer needs a proper core for its operating frequency.
Low frequency mains power transformers use steel laminations for a core. Mid and low radio frequencies use ferrite and high radio frequency transformers sometimes use no core.

 

[N4rk0]

Hi
How do you measure a so high voltage ?

 

[audioguru2]

How do you measure a so high voltage ?

Hi N4,
Welcomr to our forum. ;D
You can make a well-insulated voltage divider for your meter, or buy a high voltage probe for it like this one:View attachment 39953

 

[MP1]

N4, if you have a good quality voltmeter, you can measure the voltage directly. Most will measure 1000 and some better quality will measure 2000 volts. Check the specs on the one you are using. You might be surprised to find you already have everything you need.

MP

 

[phoenixninja9]

I cant seem to get my hands on a irf840 or BU406 is there anything else you can use Iike TIP31 , 32  ??? thanks

 

[Demolisher]

I shall post my questions here, as the hyperlink said  ;D

1. What is T2. T2 is discussed at length, but I fail to actually see it on the circuit diagram.

2. How do I wire in the pulse transformer.

3. What exactly is a pulse transformer, and how does it work?

4. What is the arrow pointing straight down between the battery and C2?

Hope someone can answer my questions.

 

[Omni]

http://www.safetyenforcement.com/stungunlaws.html


-Omni    :-\