s clear with no sludge. stirred
>> by
>> aquarium bubbler. all done in a glass gallon jug.
>>
>> jim
>>
>> ----- Original Message -----
>> From: "David Bearrow"
>> To:
>> Sent: Friday, June 25, 2004 11:47 PM
>> Subject: RE: CS> U
e in a glass gallon jug.
jim
- Original Message -
From: "David Bearrow" <dav...@sbcglobal.net>
To: <silver-list@eskimo.com>
Sent: Friday, June 25, 2004 11:47 PM
Subject: RE: CS> Useful current limit circuit
Hi Wayne,
Why not spend the $50 and get yourself a co
That design will work quite nicely for a constant current source. The only
problem with that design is that it is fairly temperature sensitive.
Marshall
Ode Coyote wrote:
> Try this one with PNP transistors...it does work.
> 1k instead of the pot gives about 1 ma
> Picture isn't as nice.
>
>
Marshall Dudley wrote:
>I see no way that would limit current. That is the workings of an SCR,
which is
>an on/off device. I have used an identical circuit many times (in fact I
have
>a patent on using such a configuration as a PUT) in place of a low voltage
scr
>or put.
>
>Marshall
>
>Dave Lewi
- Original Message -
From: Dennis Gulenchin
To: silver-list@eskimo.com
Sent: Monday, June 28, 2004 12:24 AM
Subject: Re: CS> Useful current limit circuit
Hello,
I have purchased a Canadian maple leaf $5 coin and a1oz.silver bullion bar.
I already have a 28vac conver
, no sludge and remains clear with no sludge. stirred by
aquarium bubbler. all done in a glass gallon jug.
jim
- Original Message -
From: "David Bearrow"
To:
Sent: Friday, June 25, 2004 11:47 PM
Subject: RE: CS> Useful current limit circuit
Hi Wayne,
Why not spen
ssage -
>From: "Ode Coyote"
>To:
>Sent: Saturday, June 26, 2004 8:36 PM
>Subject: Re: CS> Useful current limit circuit
>
>
>>
>> Try this one with PNP transistors...it does work.
>> 1k instead of the pot gives about 1 ma
>> Picture isn
What voltage do you feed it with Ode?
John in Australia
- Original Message -
From: "Ode Coyote"
To:
Sent: Saturday, June 26, 2004 8:36 PM
Subject: Re: CS> Useful current limit circuit
>
> Try this one with PNP transistors...it does work.
> 1k instead of th
oops, didn't proof read.. harbor freight has these units for 3.99 when on
sale.
- Original Message -
From: "Acmeair"
To:
Sent: Saturday, June 26, 2004 9:59 AM
Subject: Re: CS> Useful current limit circuit
> when on sale at harbor freight, small voltmeter that d
adequate
tyndall effect, no sludge and remains clear with no sludge. stirred by
aquarium bubbler. all done in a glass gallon jug.
jim
- Original Message -
From: "David Bearrow"
To:
Sent: Friday, June 25, 2004 11:47 PM
Subject: RE: CS> Useful current limit circuit
> Hi Wa
Morning Dave,
Why not spend the $50 and get yourself a conductance meter?
It may surprise you to know that I have one.Honestly, after a while,
the LED works good enough that I don't feel the need to use the meter.
The distilled water is either Good, Bad, Marginal, or Acceptable. I
If you use tap water, you don't know what you're making.
If anything 'can' happen in a charged ionic environment, it will.
If I use my well water, even with current control, it makes blue grey crud.
There's lots of iron in my well water..and who knows what else.
Copper in the water will make b
Try this one with PNP transistors...it does work.
1k instead of the pot gives about 1 ma
Picture isn't as nice.
Ode
At 11:51 AM 6/25/2004 -0400, you wrote:
>I see no way that would limit current. That is the workings of an SCR,
which is
>an on/off device. I have used an identical circuit ma
Constant current still depends on current 'draw' and will ramp up to the
limit just like not using the circuit. It will go under 1 ma, just not over
1 ma. The LED never gets 'very' bright but it will be dimmer in better
water. A standard 20 milliamp max LED does just fine.
If the water pulls 1 m
Hi Wayne,
Why not spend the $50 and get yourself a conductance meter?
Dave
At 09:02 AM 6/25/04, you wrote:
I would like to point out the disadvantages of the constant
current. Using constant current, the LED will not serve as a visual
indicator of current flow which allows the rejection of
--Steve Y.
- Original Message -
From: "Dave Lewis"
To:
Sent: Friday, June 25, 2004 9:22 AM
Subject: RE: CS> Useful current limit circuit
> Hi Wayne,
>
> >> current to just under 1ma, but if you change the value of R1, you
should
> be
> >>able
I see no way that would limit current. That is the workings of an SCR, which is
an on/off device. I have used an identical circuit many times (in fact I have
a patent on using such a configuration as a PUT) in place of a low voltage scr
or put.
Marshall
Dave Lewis wrote:
> Hi all,
> A colleague
Hi Wayne,
>> current to just under 1ma, but if you change the value of R1, you should
be
>>able to set the current to what you like (within reason!).
>Nice circuit, nice drawing.
Thanks. Electronics is what we do for a living.
>One question.
>
>Have you checked the brilliance of the LED at tha
Morning Dave,
>> current to just under 1ma, but if you change the value of R1, you should be
able to set the current to what you like (within reason!).
Nice circuit, nice drawing. One question.
Have you checked the brilliance of the LED at that low current? Likely
some of the smaller o
Hi all,
A colleague of mine has come up with this useful circuit. It limits to
current to just under 1ma, but if you change the value of R1, you should be
able to set the current to what you like (within reason!). Don't get too
hung up if you can't find the correct transistors, just make sure the
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