How to make a DIY shock pen or lighter or chewing gum prank circuit?

Francis's picture


Joined: Aug 18, 2018

Replies: 0
How to make a DIY shock pen or lighter or chewing gum prank circuit?
August 18, 2018 - 3:06pm


Most of us in our young age might have come across this prank pen or lighter which when clicked will give a mild electric shock. I also remember my friends using a chewing gum version of it, where if you try to pull a gum out your will experience a shock.  

These things are still sold on amazon and Ebay, but I want to build my own version powered with a small battery. So if anyone knows how o build one then please share the idea and provide the circuit diagram also if possible. I tried purchasing a pen from Ebay and take a look at its circuit, but the circuit was all covered with some black clay so it would also be great if some one could explain the working of shock pen or lighter circuit diagram. 

Before people trash upon me, I acknowledge that this circuit I am asking for is purely for educational and prank purpose and not intended to hunt/harm any living begins.


Astro Boy's picture


Joined: Aug 16, 2018

Replies: 3

I remember building a circuit long time back. I used a transformer with a capacitor in parallel with a 9V battery on its primary side. A switch will connect this capacitor with the primary of the transformer. The person is made to touch the secondary when the button is pressed and he experiences a mild schok. 

I pulled this circuit diagram from my archives have a look at it. Hope it helpssz0XL.png

Terry Lathore's picture


Joined: Aug 17, 2018

Replies: 2

Are you sure that these shock pens have a circuit inside? Because few months back I happened to rip apart this so called shock pen and there was not circuitry what soever inside the pink.

When we click there was small needle like arrangement which was as thin as hair and pokes into your thumb when you click the pen. This gives a pain similar to experiencing a mild shock. I am sure a transformer a capacitor and a 9V battery could never fit into a pen 


Hiro_Hamada's picture


Joined: Apr 17, 2018

Replies: 120

Hi Astro boy!

Thanks a lot for the circuit diagram. But I cannot understand how it will work. Can you please explain its working?


As for as my knowledge is concerned the primary side of the transformer is provided with DC hence there will be no mutual induction and the transformer will not work. 

Jayant's picture


Joined: May 19, 2015

Replies: 213

Has any one tried Astro Boy's circuit? I am curious to know if it will work. 

What type of transformer is used here?