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kettle c.2003 Project Page 6

This Website is Created and Maintained by chris--at--OUPower--dot--com (Fix the address for it to work!)
This Project was last updated on: September 25, 2006 10:37am
v7.01

WARNING! Many, if not all of the projects described within these pages, contain dangerous and potentially fatal consequences if you do not exercise proper precautions and follow standard safety procedures. The owner of this site takes no responsibility for injury sustained by anyone attempting to duplicate or utilize any of the information on this site. The information here is strictly for Educational Purposes! -USE AT YOUR OWN RISK!

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Project Description:
leave a message for me at http://oupower.com/phpBB2/viewtopic.php?t=358

my 4 plate kettle ... made in 2002 and the controller in 2003 before i knew about the 2v water thing, so should work well of an old 5v mainframe 5v/100A computer power supply with only two of the plates wired ... will run warm off 12v/14v.

was always to scared to ignite its output, but have filled lots of balloons with it with 2 minute dynamite fuses  and blown them up which is fun (i go to my friends farm ... he has a dynamite licence)

if i were to follow chris' thinking, i should build another 5 or 6 cells, and wire the 4 plates as two parallel pairs

the elctronics (my first successful electronics project) evolved after i tried replicating the "spirit ot ma'at" circuit diagrams which didn't work for me ... i made a mosfet version but the mosfets kept melting, so i had to go for the most indestructable mosfet (150A continuous) i could find ... so all a bit of a learning curve

my background; 13yrs schooling; 5 years university (law degree + 2/3 arts; mainly in social history), working part time in an autoelectricians (cleaner boy, rebuilding starters, generators, alternators)  and in a speaker factory; then working full time as a technical assistant to a couple of firms of patent attorneys for 4 years, qualified as an attorney; 1988 stock market crashed caused career change to computer animation with an artist friend, specializing in 3D.cg tv commerials, now working for national television broadcaster looking after 30 computer artists

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completed kettle


another view of my kettle, pressure-operated  valve has since siezed with crystalized electrolyte/baking soda


bottom view, electrode posts mount the plates to the container's bottom, and are sealed by rubber washers, compressed by similarly sized stainless steel washers, the nice fat wires are in place now


internal pressure builds up quickly with all the valves closed, 20psi is about as high as i feel comfortable with


my kettle can easily draw 100A plus when connected to a car battery, so i built this big arse PulseWidthModulator to tame it, not shown is the potentiometer which acts as the throttle control, and a change over switch which switches the power relays on and off, and also to change the plate polarity; they plug into the military style connectors at the top edge of the aluminium box. a big car stereo fuse (30A - 50A) helps me feel more secure.

later i added a big smoothing cap in the dc input side (positive is on the top of the fuse holder, negative is the big brass bottom bolt, which connects via a copper strap to the big mosfet .... think 1,000uF for each amp of current draw  
i did this as i started using a 14v/40A power supply, rather than my car's battery


first i tried a 1F car stereo cap, but it didnt cope with the high frequency pulses and stopped working, then i went to a 40v big electrolytic one ... it still lives

Proceed to another page of the kettle c.2003 Project: [<<<   <      >   >>>]

Click here to continue Drilling into Projects from AntDavison

Click Here to Re-Display the Main Project Page

This Website is Created and Maintained by chris--at--OUPower--dot--com (Fix the address for it to work!)
This Project was last updated on: September 25, 2006 10:37am
v7.01

WARNING! Many, if not all of the projects described within these pages, contain dangerous and potentially fatal consequences if you do not exercise proper precautions and follow standard safety procedures. The owner of this site takes no responsibility for injury sustained by anyone attempting to duplicate or utilize any of the information on this site. The information here is strictly for Educational Purposes! -USE AT YOUR OWN RISK!

Click Here to go to my YouTube Channel!!

Click Here to go to our NEW Facebook Discussion Group! This is replacing the old Discussion Board!

Click Here to go to our ARCHIVED Discussion Boards.

Please consider donating to help support this website!