Never even thought of that darlington... thats a good idea. I can drive the 3055 with that... 20mA base current for a 5A collector current at 4 volts should be more than adequate. hFE of 1000!? Nice. I Bought some heat sinks for the TO-3, and this. Its designed for a TO-220. Should mount up nice with some thermal putty. i plan on putting this all in a nice project box, with a fan curculating air through it... if i mount this up with a 600 ohm limiting resistor on the ouput of the 555... that should work.. right?

Thanks for the suggestion...

 

Bin the old bipolar and replace it with a MOSFET like the IRL540.

Why are you doing this?

This isn't another one of those ways of supposidly boosting the efficiency of electrolysis, which doesn't work, is it?

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I have gotten it to work with good results... with straight tap water. No chemical additives. With two small electrodes (and improper spacing.... I'm going to be running these electrodes at a 1 mm spacing) i was able to get a fairly strong reaction. I have not been able to test larger electrodes yet, but i know this way even with smaller, improper electrodes, it draws a _lot_ less current on each cell than if i hooked straight DC up to it... making the process much more efficient. The reaction is decently strong, and i expect good results. It also seems to have a larger output. I will be getting the material with which to make proper electrodes (Stainless steel grade 316L.. 26 gauge sheet) in the mail in the next couple of days. I will post the results here... Specific gas output volumes and such...