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Fix markdown code for pcb calculator 

Avoid '%' in translated strings and simplify the language used in
eserie_help
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Seth Hillbrand 2020-11-02 20:03:36 -08:00
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pcb_calculator/eserie_help.md
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E-series defined in IEC 60063 are a widely accepted system of preferred E-series defined in IEC 60063 are a widely accepted system of preferred
numbers for electronic components. Available values are approximately numbers for electronic components. Available values are approximately
equally spaced in a logarithmic scale. Although E-series are used for equally spaced in a logarithmic scale.
Zener diodes, inductors and other components, this calculator is mainly
intended for resistors.
E12: 1,0 1,2 1,5 1,8 2,2 2,7 3,3 3,9 4,7 5,6 6,8 8,2 E12: 1,0 1,2 1,5 1,8 2,2 2,7 3,3 3,9 4,7 5,6 6,8 8,2
E6: 1,0 - 1,5 - 2,2 - 3,3 - 4,7 - 6,8 - E6: 1,0 - 1,5 - 2,2 - 3,3 - 4,7 - 6,8 -
E3: 1,0 - - - 2,2 - - - 4,7 - - - E3: 1,0 - - - 2,2 - - - 4,7 - - -
E1: 1,0 - - - - - - - - - - - E1: 1,0 - - - - - - - - - - -
If your design requires any resistor value which is not readily available,
this calculator will find a combination of standard E-series components to This calculator finds combinations of standard E-series components to
create it. You can enter the required resistance from 0,0025 to 4000 kOhm. create arbitrary values. You can enter the required resistance from 0,0025 to 4000 kOhm.
Solutions using 3 or 4 resistors are given if a better match can be found. Solutions using up to 3 components are given.
The 4R checkbox option will take longer to process is considered for the E12
series only. Optionally it is possible to exclude up to two additional If a closer solutions is needed, the 4R checkbox option will give solutions
values from the solution for the reason of being not available. If a using 4 components for the E12 series only. This option
E-series value is entered to the required input field, it is always excluded may take longer to compute.
from any solution as it is assumed that this value is unavailable.
It is also possible to specify up to two values to exclude from the solution if these
component values are not available
Solutions are given in the following formats: Solutions are given in the following formats:
R1 + R2 +...+ Rn resistors in series R1 + R2 +...+ Rn resistors in series
R1 | R2 |...| Rn resistors in parallel R1 | R2 |...| Rn resistors in parallel
R1 + (R2|R3)... any combination of the above R1 + (R2|R3)... any combination of the above
__Example:__ Voltage dividers, commonly used for 1:10 range selection
require resistor ratio values 1:9. Unfortunately the "9" is a value, what
is not even in the E192 series available. Deviation of 1% and more is yet
unacceptable for 8 bit accuracy. For a required resistor value of 9 kOhm,
the calculator suggests the E6 values 2k2 + 6k8 in series as a possible
exact solution.