You already do that.
You already do that.
:
A mirror?
lots of super expensive stuff.
Or dimbulb.
And when it does, it's out of support, and the bean counters have put all the spares through the crusher.
On a sunny day (Sun, 14 Mar 2010 11:00:39 -0500) it happened John Fields wrote in :
A lot of pyramid schemes had the guys arrested :-)
On a sunny day (Sun, 14 Mar 2010 11:53:20 -0500) it happened John Fields wrote in :
I think Newton would never have gotten that theory round if the apple had elevated from his head.
Stupidity is a pyramid scam, and he is caught and still trying to achieve escape velocity.
On a sunny day (Sun, 14 Mar 2010 14:01:57 -0500) it happened John Fields wrote in :
I know :-)
As opposed to you, DimBulb; loving his stupidity so much that escape will never be attempted.
Actually, that 60 Hz transformer you're talking about isn't a linear transformer.
Linear as to mean opposed to switching. Not sure where I picked up 'linear' to describe that. It's probably old school.
I am pertaining to that layed silicone steel core thing with all the copper windings that plugs into the wall.
According to
Linear supply line/input transformer.
:
stuff anyways.
or LIGO,
Why do need "accuracy" to 0.01%? What are you trying to measure to that kind of accuracy? ...Jim Thompson
:
snipped-for-privacy@yahoo.com=20
Fields
from BC
:chip,
around
cheap
accurate=20
=20
You are missing some concepts here. =20 There are things called reference cells, the voltage across the=20 terminals is dependant on the chemistry/physics. Similar to and=20 far lower tech to make than bandgap references. The terminal=20 voltage can be determined to 6 places before putting the meter=20 leads to them and are repeatable and reliable. Ratiometric methods can maintain resolution and accuracy in a large=20 variety of situations, see R/2R DAC systems. With these concepts in hand you would not have bothered to make your=20 comment. Or maybe you do not credit anyone else with these few bits of=20 typical electrical engineering knowledge.
BC
: ++++expensive stuff anyways.ITER, or LIGO,
So, you know some interesting tricks to make an AC current source=20 accurate to 0.01%? A lot of people would interested, especially if=20 it was a clean sine source. With a good clean DC current source i=20 have seen measurements all the way to 0.00002%. There be tradeoffs=20 here.
: :
Do people still use standard cells?
John
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