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haha, 50% resistors. never heard of that one. Russian equipment?George Herold wrote:
On May 14, 6:24 pm, Ivan Vegvary <ivanvegv...@gmail.com> wrote:
Trying to sort through 100's of resistors. Do you all sort them by the third color band, or do you get down finer than that?
Thanks for answers.
Ivan Vegvary
We buy 1% TH metal films for something less than $0.02 each.
I calcualted what my time is worth, (salary+benefits+overhead+profit)
And how long it takes me to identify a resistor and put it away in the
right bin..(say one or two seconds with a DMM)
I save the $0.50 caps, and sweep the R's into the trash.
I always feel a bit guilty, they're fricking 1% resistors!
I could save them all in a bag and mail 'em to you at the end of a
year.
20% were common, and some 50% resistors were in equipment I
Michael A. Terrell <mike.terrell@earthlink.net> wrote:
George Herold wrote:
On May 14, 6:24 pm, Ivan Vegvary <ivanvegv...@gmail.com> wrote:
Trying to sort through 100's of resistors. Do you all sort them by the third color band, or do you get down finer than that?
Thanks for answers.
Ivan Vegvary
We buy 1% TH metal films for something less than $0.02 each.
I calcualted what my time is worth, (salary+benefits+overhead+profit)
And how long it takes me to identify a resistor and put it away in the
right bin..(say one or two seconds with a DMM)
I save the $0.50 caps, and sweep the R's into the trash.
I always feel a bit guilty, they're fricking 1% resistors!
I could save them all in a bag and mail 'em to you at the end of a
year.
20% were common, and some 50% resistors were in equipment I
haha, 50% resistors. never heard of that one. Russian equipment?
You may have some undiagnosed color blindness at work, too. The mostOn 5/14/13 3:24 PM, Ivan Vegvary wrote:
Trying to sort through 100's of resistors. Do you all sort them by the
third color band, or do you get down finer than that?
Thanks for answers.
Ivan Vegvary
At my school, they are "sorted" by value (3 bands). The problem is that
students don't always know the bands, or they don't look carefully, so
you'll find resistors off my a magnitude or more.
I have enough bins to cover 47 to 470k in the 20% value range. WithinIt depends on how you use resistors. If you find more often that you
need one of a specific magnitude, rather than a specific value, sorting
by the third band makes sense. I don't yet have enough that I need to
worry about sorting, but if I did, I think I'd sort by the first two
bands, if not all 3.
It also depends on how many "buckets" you have to sort into. If you have
only 5 buckets and don't have anything higher than 9.9MΊ, then that's
your answer ;-)
My labs have all had daylight fluorescent tubes for years, including theAnother factor is the lighting in your shop. When the lab where I used to
work started stocking a lot of 1% values (which had a light blue body)
everyone noticed that it was hard to tell brown from red. One guy (avid
photographer) started looking into lighting, and replaced some of the
overhead fluorescent tubes with a special daylight-balanced type. Presto!
Suddenly the reds jumped out and looked nothing like the browns.
Never found it to be a problem.However, the room as like "perpetual sunrise". Sounds good, but after
a while it got to be "too much of a good thing". We ended up with the
special tubes just over the resistor cabinets.
It is pretty amazing how some flourescent bulbs are missingOn Wed, 15 May 2013 12:03:52 -0500, Tim Wescott
tim@seemywebsite.com> wrote:
On Tue, 14 May 2013 15:53:25 -0700, Daniel Pitts wrote:
On 5/14/13 3:24 PM, Ivan Vegvary wrote:
Trying to sort through 100's of resistors. Do you all sort them by the
third color band, or do you get down finer than that?
Thanks for answers.
Ivan Vegvary
At my school, they are "sorted" by value (3 bands). The problem is that
students don't always know the bands, or they don't look carefully, so
you'll find resistors off my a magnitude or more.
You may have some undiagnosed color blindness at work, too. The most
common color blindness is a complete or partial inability to distinguish
green and red (the red cones are actually missing, or are sparse, or the
pigment is too close to the yellow cones' pigment, I'm not sure which).
When that happens violet and blue look the same, as do green and gray,
and red and orange (or orange and yellow, or red and brown). Basically
the blues and yellows work just fine, but blue + (red or green), yellow +
(red or green), and gray + (red or green) don't.
Another factor is the lighting in your shop. When the lab
where I used to work started stocking a lot of 1% values
(which had a light blue body) everyone noticed that it was
hard to tell brown from red. One guy (avid photographer)
started looking into lighting, and replaced some of the
overhead fluorescent tubes with a special daylight-balanced
type. Presto! Suddenly the reds jumped out and looked
nothing like the browns.
Don't blame CTA per se. Blame the bus manufacturer. One of the twoBob Masta <N0Spam@daqarta.com> wrote:
On Wed, 15 May 2013 12:03:52 -0500, Tim Wescott
tim@seemywebsite.com> wrote:
On Tue, 14 May 2013 15:53:25 -0700, Daniel Pitts wrote:
On 5/14/13 3:24 PM, Ivan Vegvary wrote:
Trying to sort through 100's of resistors. Do you all sort them by the
third color band, or do you get down finer than that?
Thanks for answers.
Ivan Vegvary
At my school, they are "sorted" by value (3 bands). The problem is that
students don't always know the bands, or they don't look carefully, so
you'll find resistors off my a magnitude or more.
You may have some undiagnosed color blindness at work, too. The most
common color blindness is a complete or partial inability to distinguish
green and red (the red cones are actually missing, or are sparse, or the
pigment is too close to the yellow cones' pigment, I'm not sure which).
When that happens violet and blue look the same, as do green and gray,
and red and orange (or orange and yellow, or red and brown). Basically
the blues and yellows work just fine, but blue + (red or green), yellow +
(red or green), and gray + (red or green) don't.
Another factor is the lighting in your shop. When the lab
where I used to work started stocking a lot of 1% values
(which had a light blue body) everyone noticed that it was
hard to tell brown from red. One guy (avid photographer)
started looking into lighting, and replaced some of the
overhead fluorescent tubes with a special daylight-balanced
type. Presto! Suddenly the reds jumped out and looked
nothing like the browns.
It is pretty amazing how some flourescent bulbs are missing
colors.
GE Chroma 50 bulbs are always a safe bet. CF and LEDs can be
some of the worst.
The most garish and controlled lighting I've ever seen is on some of the
public transit busses in Chicago. They have 4 foot LED modules in place of
flourescent bulbs. Not only did they use the cheapest, crappiest "white"
LEDs that are just blue/purple only in color, the strips they're mounted
on jump around and wobble like a jumprope in the fixtures causing
everything to flicker. It's was definitely amatuer night over at the
Chicago Transit Authority.
I'm guessing the crappy busses they're mounted in will rattle apart in the
not too near future and those horrible things will be gone.
Over in the real business world, they installed LED lighting in the
elevators at work as part of some those two faced "green" campaigns. They
tell the tennants about how they love the earth, but the building
engineer simply stated that not replacing bulbs all the time saves a ton
of money in labor costs. It's a union building so there's one guy to push
the lightbulb cart around, and another to carry the ladder. The ladder
porter stands around when the cart pusher replaces the bulbs. There was
probably a third guy at one point. I suspect this "team" is billable time
to tennants once they enter an office and are not doing work in common
areas.
Then a week later they actually installed hand cutout plastic filters to
make the lighting more balanced, and elevator like, and less like the
inside jewelry display case. It's better looking than the original
incandescent bulbs they originally had. At least somebody still pays minor
attention to details.