I have been using magnetic stirring for awhile (couple years?) after trying a little elec motor and stirrer and an air bubbler. It is an old lab unit that I started experimenting with cause I had one, and the early discussions here about stirring. It worked, but was fast, and as I think Ode pointed out back then, it was too fast even at the slowest setting. Well, it was still better than not stirring, and I was using a larger vessel than prior so that helped as I kept the electrodes near the top. Then I went to slowing the motor, but I am using voltage regulation that is designed for resistive loads. What would a better option be for slowing the lab stirrer down? I know there are variable speed switches for routers and other hand tools which seems like it would be the ticket, but I am not sure and they are at least $25 (mucho $ for a cheapskate like me, if I can do better). Any other suggestions? Ode, isn't your unit the one with a modified lab stirrer to get the slower rotations? I bet that works great. As soon as I get the proper current limiting I think I'll be set. I have been loyally taking my own silver for several years due to HepC. Unfortunately, though it has been awhile since last test, I still had a similar viral load. Still I will persist, and I am hoping that this automatic current limiting will be better and faster, so I can up my quantities while being cognizant about quality.
And thank you all for the great and clear info on current limiting diodes. Maz Dan Nave <[email protected]> wrote: Buy the .91 or the 1.1 ma rated diode instead of the 1.0 ma rated diode. You will pay twice as much for the 1.0 ma rated diode. Dan >>> "S&JY" 3/1/2006 10:06:43 PM >>> Mouser Electronics www.mouser.com/centralsemi. You want a current regulator diode which you simply connect in series with one of the leads going to an electrode. They come in various current ratings starting at 0.22 mA on up to 4.7 mA. Some part part numbers are 610-1N52xx, where xx is 85 for .27 ma, 91 for 0.56 ma, 94 for 0.75 ma, 97 for 1.0 ma and 99 for 1.2 ma. You are better to go with less than one ma and let your generator run for a longer time; this yields smaller particles. Cost is about $2. --Steve Y. --------------------------------- Brings words and photos together (easily) with PhotoMail - it's free and works with Yahoo! Mail.
