Hi Bil, I picked up some 15K resistors at Radio Shack today. I thought I would just solder 2 of them in series. I'll have to dig through some old data books and look for an active current limit circuit to use in the future. Any thoughts on optimal current limit for small particle size? I don't think the current limiter on my power supply will go down to micro amps and that's where I'll probably end up.
Andy Hi Andy, To limit the current to 1mA when using 30VDC use a 27k resistor. Of course this will not give you 1mA from the start. For that you will need a current regulator circuit. With this resistor the current will gradually build up to 1mA just as it normally builds up to 5mA, then 10 etc. The LED is really only needed for people that are not using an ammeter. Bil ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Monday, December 13, 1999 11:47 AM Subject: Re: LED's > Hi Bil, > > I was thinking I would want to limit the current to 1 ma max. I don't know > what good an LED would be for that? I was thinking of something more along > the lines of a 300K ohm resistor in series with 30 volts. It would most > certainly take a lot longer but might guarantee minimal particle size. What > do you think? > > Andy > > In a message dated 12/12/1999 8:10:40 PM Pacific Standard Time, > [email protected] writes: > > If you look in a good parts catalog > you will find that almost every LED > avail. does not contain a resistor, > etc. And there are many dozens > to choose from. > > If you have a current limit resistor > in series with an LED you can see > at a glance roughly how much > current is flowing. You may want > to choose one of the ultrabright > LED's. > > Radio Shack only stocks a tiny > fraction of what you will find in a > good mail order catalog such as > Mouser Electronics. They are > by far the best source that I have > ever seen for variety, low cost > and great service. > > > > > ----- Original Message ----- > From: <[email protected]> > To: <[email protected]> > Sent: Sunday, December 12, 1999 7:13 PM > Subject: Re: CS>Intro and questions > > > > A lot of the LEDs on the market now have built in current limit, flashers, > > etc. It seems to make more sense to me to use a current limiting resistor > in > > series rather than a light bulb or an LED though. Any thoughts on this? > > > > Andy > > > > In a message dated 12/11/1999 8:02:02 PM Pacific Standard Time, > > [email protected] writes: > > > > All single LED's have a voltage rating of > > approx. 2 volts DC (not 5 or 14V!). The > > max. current rating for most LED's is > > around 20mA. They will light up (not too > > brightly) at 1mA or less and gradually > > increase reaching full brightness as you > > approach 10mA. > > > > O.K. to use in series with ANY low voltage > > DC circuit (up to 20mA). Best to use a > > current limiting resistor. Otherwise the > > LED will burn out right quick when the > > silver wires touch (or get shorted by the > > silver growth on the cathode). Won't > > happen if you limit current. > > > > Bil > > > > > > ----- Original Message ----- > > From: G&B Rogers <[email protected]> > > To: <[email protected]> > > Sent: Saturday, December 11, 1999 7:41 AM > > Subject: CS>Intro and questions > > > > > > > Hello listers from a newbie, > > > I bought a CS generator and after seeing how simple it is, have tried > my > > > hand at making some, hopefully to give to family for holiday gifts. > The > > > version I am using is the one that comes from the Beck papers. My only > > > difficulty is getting a 24 grain of wheat bulb. I substituted a 14 v. > > > green LED bulb on the first one I made, (as a similar LED bulb was used > on > > > the generator I purchased - although it uses only a 9 v. battery) but > it > > > was quite difficult to see if the bulb was even lighting up. The flow > > > through the silver wire electrode was somewhat slow, I thought it would > > > work "faster" with the 27 voltage of batteries soldered in series than > the > > > 9v powered purchased machine, but it didn't. > > > > > > My second version used a red 5v LED with integrated resistor, but when > I > > > tested it, within seconds the water became cloudy. > > > > > > My questions are these: > > > 1) Can this be built without a bulb - just the three 9v clips in series > > > connected to alligator clips via zipper insulated wire? > > > 2) What would cause the second version (5v red LED) to make the water > > > cloudy so quickly, and is there a way to fix this? > > > 3) can other bulbs besides the recommended one (24v) be used for the > 27v > > > battery version? > > > 4) I have been using the CS mostly for external disinfection so have > been > > > using primarily purified water, not distilled. When I use distilled, > even > > > when I leave the electrodes in for an hour, I do not get the golden > color. > > > I have been adding only a drop of a baking soda solution to the > distilled > > > water that I read helps with the process. > > > > > > Any suggestions for making these CS would be appreciated! I'm rather > in a > > > time crunch since I need to get these done for the holidays. I figured > > > that with Y2K, all of my family could use having a generator on hand! > > > > > > I haven't done any of this kind of thing since I was a kid building > Heath > > > kits with my dad, so if my explanations aren't clear enough, please > > forgive > > > me. > > > > > > Thank you, > > > Beth > > > > > > > > > > > > > > > -- > > > 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] > > > Silver-list archive: http://escribe.com/health/thesilverlist/index.html > > > List maintainer: Mike Devour <[email protected]> > > > > > > > > > > > ----------------------- Headers -------------------------------- > > Return-Path: <[email protected]> > > Received: from rly-zb02.mx.aol.com (rly-zb02.mail.aol.com [172.31.41.2]) > by > > air-zb02.mail.aol.com (vx) with ESMTP; Sat, 11 Dec 1999 23:02:02 1900 > > Received: from mx1.eskimo.com (mx1.eskimo.com [204.122.16.48]) by > > rly-zb02.mx.aol.com (v66.4) with ESMTP; Sat, 11 Dec 1999 23:01:52 -0500 > > Received: (from smart...@localhost) > > by mx1.eskimo.com (8.9.1a/8.8.8) id UAA29473; > > Sat, 11 Dec 1999 20:01:46 -0800 > > Resent-Date: Sat, 11 Dec 1999 20:01:46 -0800 > > Message-ID: <00a101bf4455$5e5682a0$6fd4d...@x2001> > > From: "2001 TV VCR" <[email protected]> > > To: <[email protected]>, <[email protected]> > > References: <v01520d00b477d750d...@[207.198.174.104]> > > Subject: Re: CS>Intro and questions > > Date: Sat, 11 Dec 1999 17:42:59 -0800 > > MIME-Version: 1.0 > > Content-Type: text/plain; > > charset="iso-8859-1" > > Content-Transfer-Encoding: 7bit > > X-Priority: 3 > > X-MSMail-Priority: Normal > > X-Mailer: Microsoft Outlook Express 5.00.2314.1300 > > X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 > > Resent-Message-ID: <"ZT-HJ1.0.QC7.gunKu"@mx1> > > Resent-From: [email protected] > > Reply-To: [email protected] > > X-Mailing-List: <[email protected]> archive/latest/17587 > > X-Loop: [email protected] > > Precedence: list > > Resent-Sender: [email protected] > > > > >> > > > > > > ----------------------- Headers -------------------------------- > Return-Path: <[email protected]> > Received: from rly-zd01.mx.aol.com (rly-zd01.mail.aol.com [172.31.33.225]) > by air-zd01.mail.aol.com (vx) with ESMTP; Sun, 12 Dec 1999 23:10:39 1900 > Received: from mx-a.qnet.com (mx-a.qnet.com [209.221.198.11]) by > rly-zd01.mx.aol.com (v66.4) with ESMTP; Sun, 12 Dec 1999 23:10:30 -0500 > Received: from cello.qnet.com ([email protected] [209.221.198.10]) > by mx-a.qnet.com (8.9.1a/8.9.3) with ESMTP id UAA28391; > Sun, 12 Dec 1999 20:10:29 -0800 (PST) > Received: from x2001 (56k-la-02-46.dial.qnet.com [209.221.212.157]) > by cello.qnet.com (8.9.0/8.9.1) with SMTP id UAA02788; > Sun, 12 Dec 1999 20:10:07 -0800 (PST) > Message-ID: <001f01bf451f$c0ae14c0$9dd4d...@x2001> > From: "2001 TV VCR" <[email protected]> > To: <[email protected]>, <[email protected]> > References: <[email protected]> > Subject: Re: LED's > Date: Sun, 12 Dec 1999 20:06:27 -0800 > MIME-Version: 1.0 > Content-Type: text/plain; > charset="iso-8859-1" > Content-Transfer-Encoding: 7bit > X-Priority: 3 > X-MSMail-Priority: Normal > X-Mailer: Microsoft Outlook Express 5.00.2314.1300 > X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 > > >> > ----------------------- Headers -------------------------------- Return-Path: <[email protected]> Received: from rly-yg04.mx.aol.com (rly-yg04.mail.aol.com [172.18.147.4]) by air-yg01.mail.aol.com (vx) with ESMTP; Mon, 13 Dec 1999 19:39:54 -0500 Received: from mx-a.qnet.com (mx-a.qnet.com [209.221.198.11]) by rly-yg04.mx.aol.com (v66.4) with ESMTP; Mon, 13 Dec 1999 19:39:19 -0500 Received: from cello.qnet.com ([email protected] [209.221.198.10]) by mx-a.qnet.com (8.9.1a/8.9.3) with ESMTP id QAA24591; Mon, 13 Dec 1999 16:39:15 -0800 (PST) Received: from x2001 (56k-la-01-45.dial.qnet.com [209.221.212.108]) by cello.qnet.com (8.9.0/8.9.1) with SMTP id QAA04445; Mon, 13 Dec 1999 16:38:40 -0800 (PST) Message-ID: <005201bf45cb$697339e0$6cd4d...@x2001> From: "2001 TV VCR" <[email protected]> To: <[email protected]>, <[email protected]> References: <[email protected]> Subject: Re: LED's Date: Mon, 13 Dec 1999 16:33:58 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 >>
