Morning Andy,
>> At 03:08 AM 9/6/2008, you wrote:
Most LEDs need a resistor in series with them to limit the current and keep
them from blowing up.
True Indeed. Some stand very little over current.
Most common LEDs use about 10 to 20 milliamps. Unless
you have more than one resistor in your setup you are cooking at
what I would
consider a pretty high current limit.
They almost need a driver transistor so they would be more
effective with very low current flow, used to provide higher
intensity and more current to the LED.
I use my LED to reject water. If it glows at all with water alone,
or more that a microscopic glow, the water is too conductive and
contains something, I will not use it for making CS.
What I wanted to tell you, ....................
I have connected LED'S into 480, 3 phase voltage.
These were indicators I needed for boiler and large motor control systems.
A conventional lamp would have been safer I suppose, but would not
last as long as the LED's.
I have some LED's that have lasted 25 years.
Sooner of later, some monkey will come along that has the mind set
that all LED's are connected to low voltage DC.
How wrong can he be ? He may get a tingle and a shock, if he does
not use his meter and realize that the monkey before him, may not
think like he does.
That was years before I became addicted to electrical safety.
I suppose I should have used a transformer, and a very low value fuse.
Or a warning sign that says,...........
Hey you nut ? Be careful with this LED !
Who would believe it anyway.
The main point is, ..................
Be suspicious and cautious of all electrical circuits.
The Resistor, the Diode, and the LED could all offer a shock, and kill you.
One of the stupidest things I ever saw a man do,
Was the safety officer at a large hospital. I stood right
beside him and saw him try hard to get killed. He shook, quivered,
and scared me half to death.
His left hand was gripping the center support ( metal ) of a large cabinet.
( not a good thing to do under any condition )
His right hand gripped the end of a fuse that failed to come out of a
fuse holder.
No doubt his shaking and quivering caused the fuse to loose contact
with the higher voltage
in time ........ How long does it take ? 1 second ? Actually much less.
Survival Lessons exist every day, ........... if you are lucky enough
to get the lesson, and
live thru it.
Wayne
=================================
People seem to like clear or yellow CS.
When it turns gold or pink it means you are running it too long or you have
un-pure water. You have a DVM and ohms law so you should know what to do.
Personally I like to slow brew at about 1 ma or less.
Hope this helps,
Andy
In a message dated 9/5/2008 3:06:08 P.M. Pacific Daylight Time,
[email protected] writes:
Morning Dan,
OK, yep well you are right, the adaptor is 24v rated, the resistor is in
circuit after the led, and I am still working on the ohms, kilohms x100 or
1000 thing, still studying that bit. Don't like the sound of that 60mA
part. Although, going by all the anecdotal writings that abound in the
public domain, I appear to get a good product though, going by taste,
(minimal), colour, (DS water usually clear, Pure water seems to give varying
colours from clear/pink/gold, but never darker), and TE. I assumed this was
fairly good stuff. After spending many hours reading all the 'rumours', (I
have to call them rumours as it's impossible to find 'dead set facts', if
you get my meaning), I have sort of made up my own mind as a result until I
find someone who actually can definitely confirm what is 'good' and what is
'not', you see what I mean here, an abundance of
info/misinfo/anecdotal/could be this/could be that/this is a pretty
colour/that is a pretty colour etc etc. Oh, the rainwater CS tastes like I
have eaten a jam tin though.
Neville.
<snip>
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