On Sat, 10 Nov 2001, I Anderson wrote: > Forget the bulb, it is not needed, and serves no useful purpose as far > as I can see. > You would need one that worked at 36+ volts anyway.
There is a useful purpose, but hopefully not needed. If the rods were to short together, there would be a large current drawn, rapidly draining the battery. If there is a suitable voltage lamp in series with one of the rods, the current would be limited to that of the lamp rating and the light emmitted would be a warning that a short existed. The lamps are a very low resistance compared to the resistance of the DW and rods, so don't affect the brew time or resulting CS characteristics. Looking through the Mouser catalog, for a 3 battery, 27 volt system, the Chicago Minature # 6838, 28 Volts, 0.024 Amps (24 mA), Mouser P/N 606-CM6838 $1.70 would be ideal. It has wire leads so a socket is not required, and would limit current flow to 24 mA. Of course, if a 28V lamp is used on a 36V system and a short occurs, the bulb will be very bright for a short time, then fail. Two 18V 26 mA bulbs, #7220 in series would work well for a 36 V system. > > You could obtain 3 X 12V low mA bulbs and tie the legs together (three > legs joined together X 2) but whether they would light at the <8mA > that you would be using, I don't know. > Three legs tied together sounds like a parallel connection, not series. With three 12V bulbs wired in parallel, the combination would still light with 12V applied, but use 3 times the current. Series connection is what's needed. Of course, those of us that never make mistooks and never let the rods bump into each other don't need the light bulbs. John -- 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 Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <mdev...@eskimo.com>
