Decade Resistor
Math
I used to teach math to people in the factory where I worked. They needed to know how to use the ‘resistor color code’. This is a set of colored bands printed on a resistor that tells you what the resistance is. Each color has a digit; yellow is 2, orange is 3, red is 4, and so on.
In order to be able to read the code you need to have a basic understanding of decimals. I was amazed at how few people had a grasp of decimals, given that we had been using a decimal coinage system for many years by that time.
I would often find that, when I sat down with someone who was experiencing significant difficulties, the problem was the same.
They would tell me: ‘I’m really bad at maths.’ ‘How do you know?’ I would respond. The answer was almost always the same and uttered with compete conviction: ‘Because when I was seven, my teacher told me ‘You are no good at maths.”
This I found to be utterly shocking. My father, who was a head teacher for many years and before that a brilliant maths teacher, had never allowed thoughts like that to enter our heads as children.
He had a stunning record of taking pupils to great levels of achievement. So, whenever I encountered one of these unfortunate individuals I would phone my father and ask for his help in explaining whatever concept was holding the person back. He never failed them.
A Picnic
Then, a while later, I joined my boss and his wife at the company picnic. She was a teacher and had in her care children of seven and eight.
‘You can tell at seven when a child is useless at maths.’ She told me confidently.
I am sure she heard my gasp of horror. Here was a teacher who was actively reducing the chances for her pupils.
(Someone suggested that we make the link shorter than last week -so here is a very short one. Let me know if it doesn’t work.)
Why You Can’t Reach Your True Potential
I expect you are thinking that this title is a bit negative and not the kind of thing you have come to expect from me. I hope so.
Strangely, this is good news, not the bad news it sounds like. Read on to find out why, and why that teacher was so wrong.
Attention Density
What do you know about attention? It’s one of those weird things. We instinctively know what it is (and when we’re not getting it or doing it).
You may remember your teachers telling you to pay attention (or perhaps your partner). You may have told your children to pay attention.
Attention Skills
Attention is about several things:
Your ability to
* select one aspect of the environment (internal or external)
* focus on an aspect of the environment
* release your attention and focus on something else
People who have attention problems can have difficulty with one or more areas.
Attention Density
This is how much attention you are paying to something.
Your Brain
We can all imagine situations where a high level of attention density is required. What’s interesting about it is that what you pay attention to changes your brain.
This means that if you pay attention to specific areas your brain, because it is plastic, will become more adept in that area.
This is knows as ‘neural plasticity’. You probably just think of it as learning. I expect you are familiar with the experiment where people were blindfolded and had their brains monitored through various imaging techniques.
Within HOURS the parts of the brain that normally deal with visual inputs were being re-assigned to other senses.
So just think what happens from days, weeks and months of attention in specific areas.
Your Potential
It’s very hard to assess anyone’s potential. There are many examples of people whose teachers told them they were no good or had ‘no potential’ and they then went on to huge success. Plenty more were told they would do great things and did not.
How It Works
Let’s imagine that we could put you into a machine that was able to accurately measure your potential to draw like a Leonardo Da Vinci and we measured that today as being 21%.
If you were really inspired and practiced for a few weeks and we measured it again, it would have changed and gone up. The more you practiced, the more your potential would increase as your brain changed.
So your problem is that your potential is becoming greater and greater, so you would forever be behind your true potential. But only because you had increased that potential.
What’s so exciting is that we can all increase our potential to do anything.
Your Organizational Goals
If you asked everyone in your organization to write down what the top three goals of your organization currently are (with no conferring) what do you think the answers would be?
Would they be the same? Would you have a lot of variety?
I imagine in most of the organizations I’ve worked in, there would be a huge variety. Often when I’ve asked questions like this all I’ve had in response is blank stares.
Just Imagine What do you think would happen if everyone were focused on achieving the same thing? What would happen to their brains and their potential to achieve the goals?
It’s simple enough to do and the results could be spectacular.
Reaching Your Potential
I would suggest that most of the people who reach their potential only do so because it is so low. So perhaps it would be best to focus on something that is really worth achieving and just keep working at it, rather than worrying if you are reaching your ‘true potential’. And be wary of any teacher who tells your children that they are useless at anything.
Nancy Slessenger has authored over a dozen booklets including the best-selling ‘How to Write Objectives That Work’. Her company Vinehouse provides materials and consultancy for those wishing to improve the performance of their people in practical, straightforward ways. She believes that there are simple easy things all managers can do to improve the performance of their people. She has worked with many companies both in the profit and not for profit sectors.
EEVblog #212 – DIY Decade Resistance Substitution Boxes
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0-10GOhm 0.1% Decade resistance box resistor P40103 an-g GR L&N ESI IET GR $5,640.00 |
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ESI RS925A decade rack-mounted resistance standard (resistor) NIST-calibrated $2,995.00 |
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Decade Resistor HARS-X-1-1.0 Gold Plated Silver Alloy Contacts, IET Labs – Qty 5 $2,300.00 |
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PROCESS INSTRUMENTS / JULIE RESEARCH JRL DR100 DECADE RESISTOR DR115RM $1,999.00 |
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1-1000GOhm 0.05% Decade Resistance standard resistor P4085-M1 an-g L&N ESI IETGR $1,820.00 |
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10-1100MOhm 0.05% Decade resistance box resistor P40104 an-g GR LS&N ESI IET GR $1,560.00 |
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0.1-1111MOhm 0.02% Decade resistance box resistor P40108 an-g of GR L&N ESI GR $1,350.00 |
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10-1000MOhm 0.1% Decade resistance box resistor P4041-2M an-g G R L&N ESI IET GR $1,250.00 |
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10-1000MOhm 0.02% Decade resistance box resistor P40107 an-g GR L&N ESI IET GR $1,250.00 |
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1GOhm 0,02% Decade resistance box resistor P4078 an-g GenRad LEEDS&N ESI IET GR $1,070.00 |
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0.01-100MOhm 0.02% Decade resistance box resistor P40102 an-g GR L&N ESI IET GR $960.00 |
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10-10000KOhm 0.05% Decade resistance box resistor P40101 an-g of GR L&N ESI IET $860.00 |
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0.1-111.111Ohm 0.01% Decade resistance box resistor P327an-g GR LEEDS&N ESI IET $800.00 |
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ESI DB877 decade resistor, guaranteed and NISTcertified $895.00 |
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100KOhm-100MOhm 0.02% Decade resistance box resistor P4075-76-77 an-g GR ESI IET $800.00 |
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Power Resistor Decade Box – Claristat/Honeywell 240C 1- 1Meg Ohm $653.27 |
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Winslow 336 decade resistor box, calibrated $795.00 |
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ESI DB62-SP1023 decade resistor, NIST-calibrated $695.00 |
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Beckman 71-DRK Decade Resistor, NIST-certified $695.00 |
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0.01-122.222kOhm Decade resistance box resistor an-g P4830/1-2 GR L&N ESI IET GR $450.00 |
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ESI DB62 decade resistor, 6 decades, range from 0.1 ohm to 111.111 kohms $595.00 |
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ESI DB62 decade resistor to 11.1 Mohms, NIST-cal’d $595.00 |
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ESI DB62 decade resistor, 6 decades, range from 1 ohm to 1.11111 megohms $595.00 |
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ESI DB62 decade resistor, 6 decades, range from 10 ohms to 11.1111 megohms $595.00 |
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ESI RS624 decade resistor, NIST-calibrated & guaranteed $595.00 |
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1-100MOhm 0.02% Decade resistance box resistor P40106 an-g of GR LEEDS&N ESI IET $520.00 |
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P4831 decade resistance box resistor analog of General Radio LEEDS&N ESI IET GR $468.00 |
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0.021 Ohm-111.111kOhm 0.02 Decade resistance box resistor P4831 an-g GR L&N ESI $467.50 |
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0.01Ohm-1.111MOhm 0.02% Decade resistance box resistor P4834 an-g of GR L&N ESI $430.00 |
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GR General Radio 1433-K Decade Resistor Box NIST cal’d $495.00 |
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GR General Radio 1432-M resistance decade box (resistor), NIST- calibrated $495.00 |
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HARS-X-1-1.0 Single Decade Resistor (0 – 10 Ohms in 1 Ohm steps) $500.00 |
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ESI DB52 decade resistor, 5 decades, range from 10 ohms to 1.1111 megohms $449.00 |
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ESI DB52 decade resistor, 5 decades, range from 1 ohm to 111.11 kohms $449.00 |
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ESI DB52 decade resistor, 5 decades, range from 0.1 ohm to 11.111 kohms $449.00 |
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ESI DB655 decade resistor, guaranteed and NISTcertified $399.99 |
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ESI DB655 decade resistor, guaranteed and NISTcertified $399.99 |
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ESI DB-655 decade resistor, guaranteed and NIST-cal’d $399.99 |
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ESI Dekabox DB62 Decade Resistor 111,111 OHMS $395.95 |
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T475 CLAROSTAT Power Resistor Decade Box 240-C $400.00 |
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CLAROSTAT POWER RESISTOR DECADE BOX 240-C $399.00 |
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ENERGO APARATURA Resistor Decade MDR-93-6a $280.00 |
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100kOhm-10MOhm 0.02% decade resistance box resistor P40105 an-g L&N ESI IET GR $245.00 |
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0.1 Ohm-99.999KOhm 0.2 Decade resistance box resistor P33 an-g L&N ESI IET GR $235.00 |
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General Radio – Gen Rad – 1432-T Decade Resistor $299.99 |
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General Radio – Gen Rad – 1433-U Decade Resistor 100 ohm $299.99 |
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ESI DB42 decade resistor, 4 decades, range from 0.1 ohm to 1.111 kohms $295.00 |
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ESI DB42 decade resistor, 4 decades, range from 1 ohm to 11.11 kohms $295.00 |
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0510-9705-00 Genrad 510-E 10,000 Ohm Decade Resistor, 1000 Ohm Steps $300.00 |
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General Radio Type 510 New Decade Resistor Replacements $299.00 |
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General Radio 1433L Decade Resistor TESTED $292.50 |
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General Radio model 1433-Q high precision four decade resistor box $250.00 |
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ESI Dekabox DB62 Decade Resistor 1,111,110 OHMS $275.95 |
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General Resistance Dial-An-Ohm 7 decade resistance box (resistor) – calibrated $269.99 |
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General Radio Decade Resistor Type 1434-QC $220.00 |
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General Radio – Gen Rad – 670-F COMPENSATED DECADE RESISTOR $199.99 |
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ESI DECADE RESISTOR DB42 VERY NICE $199.99 |
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Heath Decade Resistance Resistor Block Box Model EU-30A $189.99 |
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RESISTOR DECADE BOX by RESISTOR DECADE BOX P/N DS1463 $175.00 |
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PRECISION VARIABLE/ DECADE RESISTOR/RESISTANCE BOX $140.00 |
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Extech 380400 Resistance Decade Box $99.99 Values can be set in 1O increments. 0.3W resistors. 0.3O internal zero resistance. Dimensions: 4.6 x 5.7 x 1.4″ (116.8 x 144.8 x 35.6 mm). Weight: 0.66lbs (299g)…. |
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ESI RS925A decade rack-mounted resistance standard (resistor) This precision decade resistor has eight decades (from 0.01 ohm/step to 100k ohms/step) and a continuous-resistance vernier which allows the user to dial any resistance value desired to over 1.2 megohms with 0.0001 ohm precision…. |
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ESI DB877 decade resistor box The ESI DB 877 is a eight-decade box with resistance settings from 0.1 ohm to 12+ megohms. The basic accuracy of this decade resistor is +/- 0.02%…. |
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Elenco 1% 1 Watt Resistor Substitution Box $24.50 1% 1W Resistor Substitution Box Model RS-500 – The RS-500 Resistance Substitution Box is a convenient instrument for determining the desired resistance values in circuits under design or test. The resistance obtainable is from 0 omega to 11,111,110 omega in 1 omega increments. All resistors are 1% precision, 1 watt resistors…. |
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General support maintenance repair parts and special tools list (including depot maintenance repair parts and special tools) for resistors, decade … ZM-16B/U (SuDoc D 101.11:11-6625-313-40 P) … |
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Decade Resistors, ZM-16U and ZM-16A/U, TM 11-5102 Contains information on the operation, maintenance, repair and theory of opeation of Decade Resistors. 27 pages…. |