HIGH VOLTAGE
The first experiment I’ll introduce is “HIGH VOLTAGE” (warning HIGH VOLTAGE is very DANGEROUS pls. do not follow unless you are with professionals).
The high voltage unit I have can produce up to 20kv (20 thousand volts). In (picture 1.1) I’ll show you my high voltage unit.
picture 1.1 my high voltage unit
picture1.2 flyback orLOPT (line out put transformer) image
Removing the LOPT (line out put transformer) is Hard But, testing and finding primary coil and high voltage ground of the LOPT transformer is the trickiest part. In (image1.3)
picture 1.3 testing and finding primary coil and high voltage ground.
Here a diagram of my circuitry, (picture 1.4). Setting the operating frequency with an integrated timer is easy and practical. The diagram is nothing more than a standard astable mode circuit design with a classic 555. It requires only two resistors and a capacitor to set frequency (with duty cycle of course) and another resistor to determine power transistor's base current, which you can find it's optimal value experimentally. I used 1K for R1, 2.2K for R2, and 10nF for C which made circuit to run nearly at 27 kHz theoretically, at %60 high to %40 low duty cycles.
picture 1.4 a standard astable mode circuit design with a classic 555.
image 1.5 first test
High voltage video
!! Article Under Construction !!
New Flyback Driver
After sometime of continues operation the 555ic circuit didn’t last that long. So I have build another 555ic flyback driver more powerful and less likely to burnout diagram image 1.6
image 1.6 new flyback driver circuit.
Separating the power supply for the circuit and the flyback can lessening burnouts and improving the flybacks output, input voltage to flyback from 12 to 35v, cautions! Input more voltage to flyback may cause internal arcing.
High Voltage Bottle Capacitors
One of the simplest and inexpensive high voltage capacitor is the bottle capacitor, they have a typical capacitance of 750-900pF per bottle and can withstand over 45KV. I have made some bottle capacitors my self, I use a Gatorade glass bottles because it have more surface area than other long neck bottles. Prepare the electrolyte; most people use a salt-water solution, I use salt and baking soda solution, anyway any salt or baking soda solution works as long the solvent is conductive. Here are some pictures I taken. On March 19, 2008
image 2.1 my high voltage capacitor
here are some videos
!!video is not available for now!!
High Voltage Fun
High voltage Plasma bulbs
After reconstructing my high voltage unit, I was able to build a plasma bulb, using an incandescent and a fluorescent bulb, here are some pictures I have taken. On March 16, 2008.
image01 glowing florescent bulb.
image01 the set up.
Using a battery powered high voltage I was just able to let the incandescent and fluorescent bulb glow dimly. On image01 and 02, I was using a dead fluorescent bulb, I haven’t posted the incandescent plasma pictures.
video of plasma experiment.(download)
High voltage Plasma speaker
for more info visit http://www.instructables.com/id/Build_A_Plasma_Speaker/
Microwave Transformer(MOT) High voltage
Working with a MOT is very dangerous!!! I personally experience these. Testing the MOT(image 3.1) the wiring almost catches fire and I flip the circuit breakers 3 times, so I made ballast to limit the current to the MOT.
image 3.1 MOT
image 3.2 MOT setup, center MOT, right bottom 15A circuit breaker, and right top (copper coil) ballast.
Watch Video of MOT arc ballasted
Neon Sign transformer (NST)
12kv solid state neon sign transformer
I was thinking whether to buy a solid state or an iron cored neon sign transformers. Turn out; solid state neon transformers can work. Thanks for watching.
Test run of a solid state neon sign transformer
output 12kv @ 700mA
input 220v
120 watts