KARPEN PILE

[profitis]

Nice @markscoffman.I've seen those piezospeakers self-charge and read a thread on here ages ago about somebody finding the best piezo that they could find giving quite a few micro-amps every few minutes.your idea of putting them in sequence is exactly what karpen himself did with his museam piece,two in sequence for his pulse motor.the thing about karpens is you can stretch their discharge curves wider simply by cramming more surface area into electrodes.they can infact begin to look like a normal battery's or supercapacitors discharge curve theoreticaly.the more surface area,the less time inbetween pulses would be required.

[pomodoro]

Well guys, its been fun, but I must now admit that I'm about to call it quits.

18 hrs ago, I made the same cell that worked very well about a week or more ago. It was discharging rapidly, recharging to about 800mV within a minute. I short circuited it for 18 hours. When I allowed it to recharge, it only reached 30mV in 3 hours. 

The only difference is that this time I forked out for an ultra high purity hydrogen gas bottle. I was using industrial hydrogen before.  I also used sodium hydroxide instead of potassium hydroxide, but this should have no bearing on the result.

My suspicion was that the reason why the other cell worked was that oxygen was getting reduced at the cathode. So to prove this, I removed the cathode out of the flask for 2 seconds, put it back, and abracadabra, the cell is once again working perfectly.

I'm giving  this one final shot, with the graphite rod.

So to properly prepare it profitis do I dewax it by heating in in hot caustic soda soln, an then cathodize it for a few hours to remove any contaminants?

[MarkE]

pomodoro thanks for all the work that you have put into testing the concept.

[d3x0r]

pomodoro thanks for all the work that you have put into testing the concept.

+1

[profitis]

Lol.remember when I thought pomodoro was markE or sarkeizen...just 3 days ago pomodoro was jumping around asking about pulse motors and how to build one,why was he doing this?