Calculates the resistance and global dispersible power of two or more resistors in series, this configuration is normally used to obtain not-standard ohmic values or high powers.

Data input

Dissipable nominal power of each resistor

W

Insert the values of the resistors needed, leaving empty the others.

Value resistor R1

ohm

Value resistor R2

ohm

Value resistor R3

ohm

Value resistor R4

ohm

Value resistor R5

ohm

Results |
|||

Global resistors value | ohm | ||

Global dissipable power by the resistors | W |

**Notes.**

- The global value of the dispersible power refers to the nominal (1/4 W = 0.25 W -- 1/2 W = 0.5 W etc.. ), obviously it is only a limit value that you have to avoid to reach, especially with high ambient temperature. This value directly influences the useful life of resistors.
- Nominal power dissipable by the resistors refers to 25 °C ambient, with positioning in free air and functioning into tolerance guaranteed for x hours.
- To calculate resistors pack of higher number is necessary to proceed with multi-step procedure: calculate the first group and store the values, calculate the second and store the values, at the end insert the values of the first and the second calculate to obtain the resistance and the global dissipable power.

Instructions

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Notices

Apps for the resistances.

Parallel resistors.

Series resistors.

Capacitive reactance.

Inductive reactance.