I have recently found out how much fun it can be to short circuit the leads of a charged capacitor after zapping myself while opening a disposable camera.
It wasn't long before I decided to start messing around with capacitors and creating some sparks. Soon I noticed how time spending it was to connect the capacitor to the power supply, charge it, disconnect it and just then, short the leads.
So this came to me, a little device that will charge the capacitors and disconnect them for you. The best part is that the speed at which they are connected and disconnected from the power supply can be regulated.
Even though in this Instructable I will be using low voltages such as 20v, I believe you can, by using higher voltage capacitors do the same with much bigger sparks and fun.
So let's get started!
I am NOT responsible for any Zapping caused to you by this project. If you choose to add higher value capacitors and use a higher voltage I am not responsible for whatever the outcome of such ideas is. It might end up being fun or it might end with some nasty burns.
The Schematic is to be opened using Eagle Cad.
Step 1: Gathering It All
First of all you will need to get hold of all of this parts, I do not know what they cost in your country but here in Peru I paid about
S/. 34 which is about US $11.40
Materials you will need:
-1- DPDT Switch (Double Pole Double Throw)
-2- LED Holders
-2- LEDs (Your choice of color)
-1- 20k Potentiometer
-1- Knob for the Pot
-2- DC Barrel Connectors (Female, The ones you can screw on the enclosure)
-2- SPDT Relays 12v Coil
-1- DPDT Relay 12v Coil
-2- 1N4004 Diodes
-1- Perforated Board Small
-1- NE555 Timer IC
-3- 1/2 Watt Resistors
-1- uF Capacitor
-1- 0.1 uF Capacitor
-1- 3.3 uF Capacitor
-1- 22 uF Capacitor
-3- 1000 uF Capacitors 25v (You can choose a higher value if you want, I found 3000 uF was enough)
-2- Banana Female Jack
-1- Enclosure for the Project + Screws
-1- Strip of Female header Connectors
You will also need:
-Power Supply Capable of delivering 20v
-A second power supply from 12v - 20v
-A couple of pliers