David, There are two possibilities for the polarity switch: 1. Every two minutes, or, 2. Every one minute. I'd like to be able to do either of these with one device, but if not that's okay too. I have heard it said that more frequency gives smaller particles, but then for saturating ceramic filters it may be the larger particles that are better. Reid
David Bearrow said: Describe the switching pattern. How many minutes on, how many off. Then we can design a 555 timer circuit with a relay. -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
