Download Resistor Workshop calculator. This Program is used to calculate resistor combinations for use in voltage divider circuits In The “Variables” section, one can fill in the values that are known, and press “solve” at the variable
that is unknown. If the Variables in the edit boxes are not correct, the “not balanced” sign will appear. The divider is then balanced by pressing one of the “solve” buttons. The divider is said to be balanced when the shown values of R1 and R2 will result in V2 if V1 is applied to the divider.

At any time, one can press a “Get Standard” button to get the closest corresponding standard value. The Standard of Resistor to be used, can be selected in the “Select STD” section. Here you can choose between the different E-ranges of resistor available.

The Optimization section at the bottom is used to automatically find the best combination for a certain division ratio. Simply type in the required values of V1 and V2, and press “Go”. The Software will automatically suggest values for R1 and R2 between the minimum and maximum values. The results will be displayed in the “single resistor possibilities” section. Combinations of values will only be added to the results tables if they satisfy the minimum accuracy specified in the “min Accuracy” Edit Box.

In the “multi resistor possibilities” section, there are suggestions for combinations evolving two resistors to make up a value for R2. Both parallel and series combinations are calculated. By double-clicking on any of the calculated values in the table, the set of values for R1 and R2 can be loaded into the “variables” section. In the Variables section, you can then simply press “solve” at V1 or V2 to get the divider in a balanced state. When loading values from the “multiple resistor possibilities” into the variables section, the software uses the combined value of R2 to put into the Edit Box for R2.

Xtronic.org blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

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