[email protected] wrote: > > Ok if you want smaller particles then just limit the current and you should > be able to get your 80 ppm however it will take a lot longer... To hold the > current to say 10 ma (milliamperes) or less just us the formula R=V/I (ohms > law) where resistance R is in ohms, voltage V is in volts and current I is > in amps (milliamperes is thousandths of an amp). So for 3 9V batteries > (3x9=27V) we have R= 27,000 ohms or 27k (27/0.001). The colour bands on > the resister will be red (2), violet (7),orange (000), gold/silver (5/10% > tolerance) 1/4 or 1/2 watt rating will be fine. > > Chris Gupta >
Good up to a point, but the above formula assumes a short circuit to achieve 10 mA current flow... which won't happen in the CS generator (not much else will, either... [grin] . A current regulator setup is what is needed; simplest is again to go back to the simple light buld, which has almost no resistance until it gets to it's voltage & current rated operating range, where it goes into it's incandescent state, and limits max current to it's fillament rateing. For the typical 3 9v battery system, find a bulb rated for 24 to 28 volts at the desired 10mA; (problem is, I've only seen one rated 28v @ 24mA at the lowest so far; still too high for what you are suggesting...) A solid state current regulator system is the next step to examine... a three terminal voltage regulator can also be used in a current regulating mode... the fine resolution in this 10mA range is again the challenge in such a design, but can be done. No time to go into all of the details - hope these thoughts give you some ideas on how to proceed. Morew of my thoughts are on the web page below: Bruce K. Stenulson Applied Technology http://web.idirect.com/~showcase/althealth/csilver.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]>
