Determine optimal available combinations for replacement value

Default process of this task

• Value= in section [ElectronicsTasks.CombinationTarget] supplies a target value
  • It's unit determines the class of available components
    • Ω: Resistors
    • F: Capacitors
    • H: Inductors
• Available values are retrieved from stock components, using user defined specifications in the following config sections:
  • Resistors: [CombinationTarget.Input.Resistor]
  • Capacitors: [CombinationTarget.Input.Capacitor]
  • Inductors: [CombinationTarget.Input.Inductor]
• The amount of simulated values may become limited using the Granularity=ExtraCoarse|Coarse|Fine|ExtraFine setting in section [ElectronicsTasks.CombinationParameters]
  • Negative values and zero are always excluded
  • Max amount of simululated combinations (also depends on configuration): ExtraCoarse: 5.000.000, Coarse: 50.000.000, Fine: 500.000.000, ExtraFine: 5.000.000.000
  • If limiting is needed, then values that are farthest from the target value are dropped first
• The simulation is performed, for every unique combination of inputvalues a replacement value is calculated and compared to the target value
• The best combination is refined using available values
  • This might introduce values that where dropped
  • Only when Refine=1 in section [ElectronicsTasks.CombinationParameters]
• The best combination replacement value is recalculated with uncertainties and compared to the target value
  • Whether it is a good match (Matches specs=Yes) is determined by:
    • Requested precision of Value= in section [ElectronicsTasks.CombinationTarget]
      • 123.0 Ω ± 2%
      • 123.0 Ω ± 3.0 Ω
      • 0.12300 kΩ (significant figures),
    • Tolerances of input values: Tolerance=2% in section [ElectronicsTasks.CombinationParameters]
      • When not specified, its determined from the MaxESerie=E1|E3|E6|E12|E24|E48|E96|E192 in section [ElectronicsTasks.CombinationParameters]
• The best combination is matched with stock components, also reporting their location and specifications
  • With UseStock=No|Source in section [ComponentCombinations.Stock] this can be skipped

The configurations that are simulated:

There're options that can alter the process:

• With UseStock=No|MatchOnly in section [ComponentCombinations.Stock]
  • Selecting these options a different source of available values could be provided: Source=None|InputTab|TextFile in section [ElectronicsTasks.ComponentCombinations.Init]
    • None: simulation needs to be done using e-series
    • InputTab: available values are taken from the interpreters application input tabsheet
    • TextFile: available values are taken from the file: Filename= in section [ElectronicsTasks.AvailableValues.TextFile]
• With UseESeries=1 in section [ElectronicsTasks.CombinationParameters] simulation is done with a several decades of e-serie values.
  • MaxESerie=E1|E3|E6|E12|E24|E48|E96|E192 in [ElectronicsTasks.CombinationParameters] can limit the max used e-serie
  • Available values (when supplied) are used to discard unavailable e-serie values