George Martin wrote: > > Recently I had occasion to produce numerous batches > of CS in a short period of time. Since I had several going at > once I had to pay a bit more attention to the process then normal. > What I noticed and would like to share with the list follows. <snip> > Regards, > George Martin >
George, I read with interestyour email. I also have worked with less than the 28-36 volts commonly recommended, and commonly run at 15 volts with no current limiting, so thatr I can monitor the increasing current to determine the cutoff. I also use a pulsed DC, rather than a constat current. My theory is that by disrupting the current flow frequently (20KHz) that the tendancy for silver ions to be produced in larger'clumps' is less likely. Since I don't have access to a microscope to verify this, and financial resources need to be directed elswhere for now, this is still in the unproven "theory" stage. I use 8mA at 15 volts (meter averaged reading) as my cutoff, in hot distilled water, using 1/4 of a previous batch as a 'starter'. (Cuyrrent is directly related to electrode geometry, and is therefore relative to my setup: 3-1/4" wetted length, 14ga, 1/2" apart in an 8 oz container. I don't have occasion to use more than ~6 ounces per week to 10 days, so I don't make larger batches, preferring instead to make a new batch as I get down to the 1/4 level - using it to "start" my next batch. Even at the 120mW power level (8mA at 15 volts) I am just below where the product produced may begin to get a bit "cloudy" - seems that up to that current level, the resulting product is a very clear, deep golden yellow. At above 10 mA, however, a slight silvery hazyness begins to be detectable. Since the TDS1 reads 20PPM consistantly when the generating process is stopped at the 8mA reading at 15 volts, I have found it unnecessary to run beyond this point. While the silver "sludge" builds up on the negatively charged electrode (cathode), if the distilled water tests 000 or 001 on the TDS1 before starting, no precipitation is observed. Producing a pulsed DC CS generator supply is quite simple; a basic 555 timer astable circuit will produce more power than needed. Parts can be less than $25.00, including either a battery holder, or an AC plug in power supply; all available at Radio Shack. The 555 timer chip will tolerate up to 18 volts, which was a guideline in my early experimenting. If there's enough interest, I'll post a circuit diagram on my website for a 12 to 18 volt powered pulsed DC CS generator. If there's enough interest, I'll produce a PC board, parts list, and instructions for around $12.00. With enough interest, a full kit could be made available fairly reasonably. Generating your own quality CS doesn't have to be expensive! Let me know if anyone's interested; times are busy, but we can make it happen if there's an expressed interest. Otherwise, the circuit will sit on the 'back burner' for a while longer... Be Well! Bruce K. Stenulson Applied Technology The Alternate Health Approaches Forum http://web.idirect.com/~showcase/althealth/index.html -- 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: silver-list-requ...@eskimo.com -or- silver-digest-requ...@eskimo.com with the word subscribe or unsubscribe in the subject: line. To post, address your message to: silver-list@eskimo.com List maintainer: Mike Devour <mdev...@id.net>
