AC Transformer Shocker

This is my first instructable, so go easy on me.

In this instructable, i will be showing you how to convert an AC power transformer into a shoking device.

Step 1: Needed Materials:

You need:
An AC power adapter that you are willing to take apart (i think any of them should work)
A button/ switch
A square 9v battery (with good charge left)
Another square 9v battery (dead or one that you want to destroy)
Soldering Iron
Electrical tape
Hot glue
A vice
Minimal electronics and soldering knowledge and skills.

Step 2: Removing the Cord From Your Transformer

the easiest way to do this is to but a flathead screwdriver on the cord, and hitting it with a hammer.

Step 3: Cutting Around the Prongs for Easier Opening

In this step, you will take your dremel and cut a rectangle around the two prongs that go into the wall.
*CAUTION* the smoke from this may be toxic, do not breath it in!

Step 4: Open the Adapter

You will need to put the Flathead screwdriver where the cord was coming out of from before and hit with a hammer down the sides until it snaps open. then take the actual thing out

If yours had a circuit board on the end where the cord you removed were, you will need to take off the circuit board, and save the two wires that should be attached to the circuit board.

Step 5: Attatch Wires Directly to Adapter (unnecessary If Yours Didn't Have a Mini Circuit Board)

Take those two wires ive been telling you so much about and solder them to the two wires that were attatched to the circuit board

Step 6: Attach Your Button

In this step, you will need to attach the button to either of the two wires you soldered on in the last step (or just the ones that were there if you had no circuit board)

Step 7: Taking Apart the Dead 9v Battery

For this step, you will need to start by using wire clippers or pliers to get a piece that you can peel off.
You will then peel until you can take off the positive and negative clips. (you may need to snip it if it is attached on the inside)

Step 8: Finish Wiring the 9v Clip

In this step, you will need to put a glob of solder on both of the leads on the bottom side of the piece you removed from the dead battery. Then you need to attach two wires facing the same way.

Step 9: Test and Finish Your 9v Battery Holder

Test your battery before you put it in the clip, then test the two wires coming off of the clip to see if it was a good solder connection. Then wrap in electrical tape if you wish.

Step 10: Wire the Battery Clip to the Rest of Your Tansformer (now Almost a Shocker!)

For this step, you will begin by attaching the other wire from the button to one of the wires coming from the clip. Then, you will solder the other free wire on the soon-to-become-shocker. and you can cover the wires you soldered together with electrical tape at this point.

Step 11: Test to See If the Shocking Device Is Working

Now you need to put your working 9v battery into the clip so you can test. to shock, press down the button; and when you let go, it will perform the shock. to actually shock someone, or yourself, you need to have both of the prongs touching part of their skin when you let go of the button. if everything works, you are ready to put it in the case!

Step 12: Put the Button in the Case

First, you will need to locate a good spot to put the button. then you will need to take the drill bit for your dremel, and cut a hole there that is the right size. then you will have to glue it there with hot glue. (i just taped it there, and now i have to take it apart and redo that part)

Step 13: Close Her Up!

for this step, you will put the shocker back into the original case with the button. then you put the top back on and tape it together, or glue it if you are confident you will never open it again

Step 14: Enjoy!!!

although this has been a long instructable, i hope some of you will try this. it's really fun to shock people. two things you should try: you get one other person to touch one of the prongs and touch your arm or other part of your body. then you touch the other prong and do the shock. you should both be able to feel it on where you are touching the prong, and where you are touching each other to close the circuit. and the other thing to try is to shock the veins/tendons on the bottom of your wrist, it should make some of your fingers twitch!



    • Fandom Contest

      Fandom Contest
    • Beauty Tips Contest

      Beauty Tips Contest
    • Colors of the Rainbow Contest

      Colors of the Rainbow Contest

    75 Discussions


    3 years ago

    try a 12 volt, or a car battery mwahahahaha. not on people though. add a wire or 2 to the prongs to make an emergency fire starter.


    3 years ago on Introduction

    Thanks for writing this up. I just remembered making these more than 20 years ago and wondered if anyone else had the same idea. Your design is nearly identical to the one I came up with, except is used a lot more electrical tape to attach the battery to the case.


    6 years ago on Introduction

    How does this even work transformers work only on ac voltages whereas batteries can only give dc voltages and unless you have a transistor and filter capacitor hidden somewhere it wont work

    1 reply

    Reply 4 years ago on Introduction

    When you switch on and off it acts like AC. That is also how DC step up/down converters work. But they operate at a much higher frequency.


    4 years ago on Introduction

    I did a project just like this except I made a switch that turn on and off many times per second so that the arc would appear to stay the same. Mine actually made a arc about 1/4 inch long.


    Reply 10 years ago on Introduction

    No, the transformer is designed to take 120 v and make a low voltage with it. Basicaly is only a mater on turn in the coil. So if you take a 120/24 (most power cord use a 120/24 and then the rectfier circuit give te voltage needed), putting 9 volt on the secondary will give you a pulse of 45 volt.


    actually, no, it might start as high as 500v, and drop to 0v. your multimeter might average it out to 45v though.

    that logic only applies to constant AC, and its still roughly the average voltage. youde still get spikes of a hundred volts or so to begin with, though, they are so small they go unoticed.


    Reply 10 years ago on Introduction

    i don't think it does, but i could be wrong. if you have one that has a voltage output of 9v, i would use that one just to get the best effect.

    tesla man

    6 years ago on Introduction

    Thats funny!!! I just built one that is almost exactly the same this morning!! I didnt even look at your instructable!!!


    7 years ago on Introduction

    i always use the dead 9 volt batteries to make the battery connectors because they fit perfect and they have the solid cardboard that make them sturdy and easy to take on and off. plus they are practically free. (because you already used the battery and were going to throw it away anyways)


    8 years ago on Step 14

    one advice: use smaller battery (4,5 v flat is fine) and put it inside this thing. it makes it smaller and still gives you enought shock.


    8 years ago on Introduction

    Hi, nice and soimple instructable, but I have a question: is it a 220V power adaptor?


    10 years ago on Introduction

    I think it is unnecessary to tare the battery apart. you can solder leads to battery as it is.

    I'm very happy, that I spotted this instructable, because I need a device @ school to prank others.... will make it with 2 leads, countdown timer (with Atmega), and fake voltmeter!! :)

    6 replies

    A school Prank? I brought something similar to school that used a lighter ignitor and people considered it a tazer so now i have 48 days of out of school suspension and will probably fail 3rd quarter. DONT TAKE THIS TO SCHOOL!! they can consider it a weapon!

    lmao, i just took apart one of thoes lighters, and i got a few people so far ;D, but my question for the school is can voltage actually be a weapon, i mean where is the limit between weapon and electricity, schools are psycho these days :P

    where are you from?? I didn't make his device, for the event @ school, to prank others.. Instead - we brought a chainsaw to school!! :D without a chain of course --- that way, we scared the crap out of "first year students" (don't know, what is the english word for them, but they are the students, which learn for the first year in that school!! )) :D

    Washington State, USA, I tell you the people working for the school are damn paranoid! I think the punishment is worse because I have a history of being dangerous and unstable, but 48 days is preposterous I will miss all of 3rd quarter. How do they expect me to make up the work? Anyway where are you from because if I did the thing with the chainless chainsaw, i would probably be expelled and have a criminal charge against me.