• Category Archives High Voltage Experiments
  • Pin Pong Cyclotron

    Equipment

    1 x Hv DC supply 15-30kv
    1 x large plastic mixing bowl
    1 x pin pong ball made conductive
    Aluminum tape

     

    Diagram

    hvexperiments.

    Method

    Take the bowl and clean thoroughly. Using the Aluminum tape create the pattern on the inside of the bowl shown above. Try with the supply an ensure that there are no arc overs. If so trim some tape off the offending areas. Ensure that the top of the pattern comes to the top of the bowl. pierce a hole in the middle, bottom of the bowl and stick a wire through the home to the HV side of the supply, use a piece of tape to attach the wire firmly. Connect the top edge of the bowl with another piece of tape an connect this to the other terminal of the supply.

    Create a conductive ping pong ball. (details here Conductive Balls for HV experiments )

    With the supply off, throw the ping pong ball into bowl so it runs around the bottom of the bowl. Turn on the supply. The ball should accelerate and maintain a healthy velocity around the bowl.

    Results


  • Conductive ink as a fuse

     

    Equipment

    Diagram

    Conductive Ink Fuse

    Method

    Create your fuses by drawing a fuse shape onto a piece of card (I used an inkjet printer) then using the Conductive Ink pen, draw a fuse wire through the middle.

    Img_20140426_1412

    Connect as in Diagram above.

    Use EXTREME CAUTION, the charge in the capacitor is LETHAL. After each run turn off the supply and short out the capacitor before touching any part of the circuit. Ensure all connections will not come loose during the run.

    I used a car ignition coil and a 50KV string of diodes to charge my cap.

    Let the HV supply charge up the capacitor and the spark gap will fire, dumping the stored charge from the cap into the “fuse”. Warning, it can be VERY loud and VERY Bright.

    If for any reason the spark gap doesn’t fire, use the chicken stick to short out the cap and make the gap smaller.Img_20140426_1411

     Results

    Img_20140426_1407fuseonly  Img_20140426_1404

    The resultant arc is VERY bright, the photos above were taken at F29 on the slowest setting on my camera (well under ISO 50) and they are still white out.

    The best thing is that the “fuse” can be blown many times, the discharge doesn’t take off all of the Ink and will keep going (total surprise)

    Maybe I need a bigger Cap ?

    After a suggestion to use welding goggle glass as a filter, a couple of better fuse photos

    Still very bright, Camera was at F29 and on its slowest ISO setting (~iso50)

    Img20140501_11736_01 Img20140501_11737_01


  • Pie Tray Fountain

    Equipment

    High voltage low current source >60Kv
    Small aluminium Pie Trays
    Sphere (if not using a VDG)

    Diagram

    PieFountain

    Method

    Stack the pie trays on top of the high voltage source, either on top of a VDG dome, or on to a sphere connected to the high voltage source
    Apply the high voltage, the pie trays will float up of the top of the stack one at a time creating a fountain.

     


  • Lichtenburg Figures – Toner

    Equipment

     Metal Sheet
    Acrylic sheet (8mm thick)
    30Kv PSU
    Wires
    Needle or Pin
    Photocopier (or laser printer) Toner

    Diagram

     Lichtenburg-toner

    Method

    Clean the Acrylic thoroughly, ideally using an alcohol based cleaner. Ensure the sheet is clean and dry before applying the voltage.

    Attach the high voltage source between the pin and the metal plate, If you don’t want to support the pin, heating it up and punching it a couple of mm into the acrylic works ok, Ensure the wires are as far away from the acrylic as possible.

    Apply the high voltage, carefully dust the toner onto the acrylic around the pin.

    The toner should stick where there is a static charge on the acrylic, but leave fine strands visible as lichtenburg figures.

    Turning off the high voltage leaves the toner and pattern.

    It is possible to transfer the pattern on to paper, by laying the paper on to the pattern and carefully rubbing the bac of the paper, ensure that the paper doesn’t move during the transfer process.

    Results

    Img20130818_10006 Img20130819_10013 Img20130819_10019


  • Kirlian Photography

    Equipment

     Two A5 sized thin pieces of glass.
    Copper Wire.
    Water.
    Silicon bath sealant.
    Black Card
    Insulated wire
    AC HV Generator
    2 x peices of Wood 15mm square  x 30mm
    Coins, leaves or other object to photograph.

    Diagram

    kirlian

    Method

    Bend the wire in to a ‘U’ shape slightly smaller than one of the sheets of glass. Lay the wire on top of the glass and add a bead of sealant around the outer edge. Apply the second piece of glass on top of the wire and ensure that the sealant has contacted both pieces of glass all the way around. Leave until the sealant has completely dried. This forms a water pocket with a copper strip all the way around.

    Cut slots in the wood to allow the glass pocket to stand upright. Fill the pocket with water.

    Place an object on the back of the glass pocket and apply power from the HV source.

    A visible corona should be visible around the object from the front of the camera. Different objects create different patterns.

    Results

    key leaf screw spanner bulb 5pound

    More at Extreme Electronics – Kirlian Camera


  • Lightbulb – Single Connection

    Equipment

    Tesla Coil
    Light Bulb (low wattage filament lamp)
    Stiff Wire

    Diagram

    lightbulbone-tesla

     

    Method

    LES

    Attach the using the stiff wire wrap a 30cm piece of the wire around the light bulb screw. Solder another 30cm length of wire to the tesla coil top. Arrange the free wire so it points away from the top of the tesla coil.

    Bayonet cap

    Solder two pieces of wire to each of the lamp connectors, attach one to the tesla coil top load and have the other point away from the tesla coil.

    Turn on the coil. Steamers will flow from the free wire and if there is enough power the lamp will light.

     Results

    Img2005-07-18 171646

     


  • Coloured Sparks

    Equipment

    Tesla coil (ideally 1KW or bigger and ideally an SSTC)Ceramic Tube
    Small Soft wood pieces (2-4cm long 5mm diameter)
    Selection of materials (Salt, Strontium, Copper)
    Water

    Diagram

    coloured salts

    Method

    Soak the wood peices in a strong solution made from selection of test materials. In a well ventilated room place the wood pieces in place of the tesla coil breakout and run the tesla coil. Cut the power to the tesla coil if smoke or fire occurs on the breakout. Beware of materials that burn with poisonous smoke.

    Img2005-08-20 204906
    Salt Sparks !!

    More at Extreme Electronics Salty Sparks


  • Light a Flourecent Tube at a distance

    Equipment

     Tesla coil, or High frequency AC source

    Diagram

    Flourecent-distance

    Method

    Place the florescent tube close to (but not touching) the HV source. The tube will light. Be careful not to get a streamer from the tesla coil to strike the end of the tube.

    Some Plasma globes are powerful enough to light a small florescent tube.

    Van de graff machines will light florescent tubes intermittently.

    Do not hold the tube in your mouth as is the tube fractures you may get a mouth full of glass and mercury.

    Teslathon Mar 2011--5

     

     


  • Erase a CD

    Equipment

    Tesla Coil
    Bulldog clip
    Aluminium foil
    A pile of CD’s

    Diagram

    cd-erase

    Method

     Attach the CD’s in place of the teslacoil’s breakout using the bulldog clip  and aluminium foil.
    In a well ventilated room, Turn on the tesla coil. The Aluminium is removed from the CD in a display of sparks and arcs.

    Be careful that the CD does not catch fire as this produces toxic smoke, Also be careful with cheap writeable DVD’s and CD’s some of them catch fire quite easily.

    dwdsc_6215