Answer Regarding Resistor Tolerances

Started by MaxMaxfield 4 months ago4 replieslatest reply 4 months ago59 views

A couple of days ago I posted a question regarding resistor tolerances (

This was part of a series of columns I'm writing explaining electronics and microcontrollers to absolute beginners. As part of researching this, I've discovered all sorts of interesting things, like the fact that the idea of having preferred values based on a logarithmic scale originated in France in 1877.

It would be great if you could persue and ponder the column I just posted and perhaps even comment on it if you find the time:

Electronics & Microcontrollers for Absolute Beginners (Part 10) Since it simply isn't possible for manufacturers to create every conceivable resistor value, the industry has settled on a range of standard values, but how was this decision made?

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Reply by DilbertoSeptember 24, 2020

Hi, Max Maxfield!

I've read your column in and I really appreciated the precision description of the French cuisine!   :-)

Also, I didn't know the Renard's history. I also knew the logarithmic nature of the resistance values scale but I didn't knew the reasons.

Now I know. Thank you!

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Reply by MaxMaxfieldSeptember 25, 2020

Hi Dilberto -- thanks for your kind words -- they always say that you only discover what you don't know when you try to explain something to someone else. In this case, I knew about the logarithmic nature of resistor values, but I'd never wondered "why" until I started to try to explain it. Re the part about French cuisine ... you should hear what they say about English food LOL

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Reply by DilbertoSeptember 26, 2020

An outdated joke:

The paradise: English house, American wage, Japanese wife, Chinese food.

The hell: English wife, American food, Japanese house, Chinese wage.


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Reply by MaxMaxfieldSeptember 28, 2020

The way the French would tell this, the Hell would be English Food (but they still haven;t forgiven us for Agincourt ( :-)