Fred Walter wrote: > > So you are using 15 VDC? Why did you pick that, instead of the more > common 3*9 volt battery (around 26 VDC to 27 VDC)?
>From past experience in electroplating, I knew that 2.2 volts would move silver ions effectively in a highly conductive silver plating bath; also, I knew that at 4 volts in the same setup, the result was a coarser, grainy texture to the object being plated at the Cathode (negative electrode). I wanted fine particles of silver, while overcoming the initial low conductivity of pure distilled water - so I tested and experimented and watched / measured what was happening in the CS generator. I also, incidentally, am using pulsed DC, rather than a constant current; this should, in theory, help to keep colloidal silver particle size small, and produce less "clumping". Since I do not have access to an electron microscope, I just work on the basis of the possible benifit theory for now. If someone has access to such a microscope, and would be willing to test this product, I'll send a sample. > > >Further Note: Beyond this current level / concentration.... > > Does what you are saying hold if you are using a 40mA lamp in the circuit? The bulb acts as a 'max current flow limiter' for lack of a better term; to use a current measurement as a cutoff point to always end up with exactly the same PPM, you can't work up too close to the bulb's limit threshold. A 80mA bulb would limit max current flow in the circuit to that value.... Another note : HIGH currents produce excessive gas production at both electrodes, and result in dispersing the 'silver sludge' plating out at the cathode surface back into your CS solution; this doesn't happen nearly as much when lower peak currents are used. This is not voltage dependent, but current dependent. Larger surface area electrodes will help somewhat; always filter the finished CS product!!! Bruce K. Stenulson Applied Technology http://web.idirect.com/~showcase/althealth.htm -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the subject: line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>
