Resistor calculator
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Description
Calculation of series and parallel connection of resistors. Taking into account tolerance, voltage, and power.
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Resistor combinations
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Get to know the generatorAbout the calculation results
The tolerance shows the possible percentage deviation of resistance from the obtained result. The voltage shows the maximum operating voltage of the resistor. Power - the maximum power that the node can dissipate. Note that the maximum voltage of the resistor may be limited by its power. Also, the maximum power may be limited by the permissible voltage of the node.
This calculator is designed for quick and accurate resistance calculation for any number of resistors connected in series or parallel.
Unique Features of the Calculator
This calculator has important settings that will help you get advanced results.
- Calculation of the tolerance for the obtained resistance.
- Calculation of the maximum permissible voltage for the obtained resistance.
- Calculation of the maximum permissible power for the obtained resistance.
- You can set the desired limit for rounding. Since all calculations are made through a special mathematical library, you will get high accuracy results.
Please note that the maximum permissible power and the maximum permissible voltage are interrelated. For example, a resistor has high power but low permissible voltage, then the maximum power will be indirectly limited by the maximum voltage.
Use this handy series and parallel resistance calculator to quickly and accurately calculate resistance values in various electrical circuits. Our tool will help you save time and confidently work with resistors in your projects.
Series and Parallel Connection of Resistors
Series Connection: When using a series resistance scheme, resistance values are simply summed. This means that the total resistance equals the sum of all individual resistances. The calculator allows easy determination of the total series resistance for given values.
Parallel Connection: In a parallel scheme, resistors are connected parallel to each other. In this case, the total resistance is calculated differently. The calculator provides the ability to quickly determine the total parallel resistance for given values.
Resistor Tolerance
Tolerance in resistors defines the range of resistance values within which the resistor is considered to match its nominal characteristic. Resistors can have different levels of tolerance, indicated in percentages or absolute values.
Tolerance defines the deviation of the actual resistance value from its nominal value. For example, if a resistor has a nominal resistance of 100 Ohms with a tolerance of 5%, it means that the actual resistance value can be in the range of 95 Ohms to 105 Ohms.
Resistor Power
The power of a resistor defines the maximum amount of energy it can dissipate without damage or changes to its characteristics.
Resistors have a certain resistance, and when an electric current passes through them, they convert electrical energy into heat. Exceeding the maximum power of the resistor can cause it to heat up too much, leading to overheating, damage, and even ignition.
When choosing a resistor for a particular application, the power requirements must be taken into account. The resistor must have a power rating that exceeds or matches the maximum power it will experience under real operating conditions. When connecting resistors in series or parallel, care must be taken with the power that will be dissipated on the resistors.
Resistor Voltage
The maximum voltage across a resistor indicates the maximum voltage that the resistor can withstand without damage or changes to its characteristics. This is an important parameter to consider when choosing and using a resistor.
When choosing a resistor, ensure that its maximum voltage is higher than the maximum voltage that will be present under real operating conditions. This is important for ensuring reliable and safe operation of the circuit or device.
When connecting resistors in series or parallel, care must be taken with the voltage that will be present on the resistors.