Highfields Amateur Radio Club
Constructors Corner.

Calculator pages.
Series / Parallel Resistor Calculator.
Source code supplied by: www.electronics2000.co.uk © Simon Carter.

The first two calculators below calculate series or parallel combinations of resistors.
Enter the resistor value and press 'Add to Total'.
Repeat until all resistors have been entered.
Press 'Clear Total' to start a new calculation.
The third calculator will find a resistor value to place in parallel with a given resistor value to produce a specified total.

Resistors in Series - Calculate Total:
Enter Resistance, press 'Add to Total' to add to total. Press 'Clear Total' to reset.

                  

Arrow

Arrow

 Total R =

Ohms

Resistors in Parallel - Calculate Total:
Enter Resistance, press 'Add to Total' to add to total. Press 'Clear Total' to reset.

                   

Arrow

Arrow

 Total R =

Ohms

2 Resistors in Parallel - Calculate One Resistor from Other and Total:
Enter R1 and total, press 'Calculate R2' to find the value of the other resistor needed to produce the required total.

R1:             

Total R:     

Arrow

Arrow

 R2 =

Ohms

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