----- Original Message ----- From: "Ode Coyote" <[email protected]> To: <[email protected]> Sent: Friday, August 17, 2001 11:51 AM Subject: Re: CS>current control circuit
> ### Might be a good idea to differentiate between regulating and > limiting. They're not quite the same thing. ***You are quite right, I should have said current regulator. > > At 01:02 PM 8/15/01 -0400, you wrote: > >A good current limiter can be made with a LM-317 > >voltage regulator and a resistor. Here is a link to the datasheet > >including some interesting schematics. > > > >http://www.national.com/ds/LM/LM117.pdf > > > >I think you will find that if you are using good > >quality distilled water that the current is self limiting. > ## But not self regulating. It's being controlled changeably by the > increasing conductivity of the CS. > > >I turn my generator off when the current reaches 2.5ma > ##That is a manual current "upper limit" verses the current staying at a > set value. > ***Thats true of course. I have an adjustable current regulator on my generator at the moment but I'm using it virtually unregulated. I find that if I use too little current that too much silver plates out to the cathode. Possibly from the increased production time due to the reduced voltage, allowing more silver to come in contact with the cathode? I would think it might be less of a problem if you were not using constant agitation though. I find that the cathode stays much cleaner using the ingots rather than wire, possibly due to decreased production time? > >which is the same as 15kohm or approximately > >10ppm. I am using a 37.5v computer grade power supply > >from an HP printer (low ripple). > > > >If you were using 27v you would want 1.8ma > >for the same final resistance. I use 2 1/4" spacing > >on 14ga .9999 silver wire. The distilled water > >reads 1.2uS at the start and finishes at 11.0uS > >consistently. > ## Or, if you're controlling current at say 2 ma, you'd want to stop at > around 12 to 14 volts depending on what sort of PPM you want and electrode > spacing/wetted surface. I wouldn't use 2 ma unless I was also doing > constant mechanical stirring. ***I absolutely agree that mechanical stirring is important as the amperage/voltage being used goes up. I use either an air pump or a stirring motor. I am still not convinced as to which method is "best" though. Both seem to work well. > > >Most of the machines that shut themselves off use > >current regulation to get a voltage drop which is > >used to trigger the shut off point. > ### Absolutely. Voltage comparators don't work for a shut down if the > voltage doesn't change. However, current regulation or control will work to > control rate of ion production without a comparator. Current limiting > doesn't control ion production rate, it only stops it from exceeding a > maximum. Current control lets the voltage go high if conductivity is low > and voltage go low if conductivity is high. > Ken > > ***OK, here is where I get confused. I understand the relationship between the current regulator and comparator, so that isn't a problem. What I don't understand is the relationship between current, voltage and particle size. I have read in several places that higher voltage is important for reduced particle size. I've also read that increasing current can increase particle size. Then we also get in to the area of current vs surface area.... Somewhere in all of this there has to be a happy medium - efficiently generating the smallest possible particles... Of course I have to agree with "Ole Bob" when he says that all CS is good! quietcove > > > >----- Original Message ----- > >From: <[email protected]> > >To: <[email protected]> > >Sent: Wednesday, August 15, 2001 12:12 PM > >Subject: Re: CS>current control circuit > > > > > >> Ken, > >> > >> Would you send me a schematic of your current control circuit? > >> > >> 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: > >> [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]> > > > >
