Ohms Law calculator

Ohms Law Calculator

Mark Li
Mark Li
18/10/23 ·

Ohm’s Law and Its Application in FIRGELLI Electric Actuators

Ohm’s law, a fundamental principle in electronics and electrical engineering, is crucial in understanding and optimizing the performance of FIRGELLI Electric  Actuators. These actuators, often employed in automation systems, robotics, and other applications requiring precise motion control, operate on electrical principles that are well-described by Ohm’s law.

The Basics of Ohm’s Law

Ohm’s law states that the current passing through a conductor between two points is directly proportional to the voltage across the two points. It is expressed mathematically as V = I x R, where:

  • is voltage
  • is current
  • is resistance

    Application to Actuators and Motors

    When powering a FIRGELLI Electric Linear Actuator, understanding Ohm’s law aids in choosing the appropriate power supply, managing heat dissipation, and ensuring efficient operation. The actuator’s motor has inherent resistance, and by applying Ohm’s law, users can predict the current draw under various loads, contributing to efficient power management and performance optimization.

    Implications for Performance and Safety

    Knowing the relationship between voltage, current, and resistance aids in safeguarding the actuator from overcurrent scenarios, potentially resulting from low resistance or high voltage, ensuring the durability and safety of the device. By adhering to Ohm’s law, the risk of overheating and other electrical failures is minimized, ensuring consistent performance and extending the lifespan of the actuator.

    Three-Phase Power and Ohm’s Law

    Three-phase power is commonly used in industrial applications and large motors due to its ability to transmit more power with fewer wires and higher efficiency. In the context of Ohm’s Law, the formulas are modified to accommodate the complexity of three-phase systems, which are essential for running large FIRGELLI electric linear actuators efficiently.

    Calculating Current in Three-Phase Power

    In a three-phase power system, the formula to calculate the current is given by:

    Current (I) = Power (P) divided by  (Voltage (V)  x Power Factor (PF)  x 1.732)


    • Power (P): The total power consumed by the system.
    • Power Factor (PF): It is the ratio of real power flowing to the load, to the apparent power in the circuit. It tells us how effectively electrical power is being converted into useful work output.
    • Voltage (V): The voltage supplied to the circuit.
    • √3 (1.732): A constant derived from the three-phase power system.

    Built-In Ohm’s Law Calculator

    Our article also features a built-in Ohm’s law calculator for real-time computations, assisting engineers, technicians, and hobbyists in making quick and accurate electrical calculations pertinent to the operation of FIRGELLI Electric Linear Actuators. Input your parameters, and the calculator provides instantaneous results, facilitating seamless planning and operational adjustments.


    A comprehensive grasp of Ohm’s law is instrumental in harnessing the full potential of FIRGELLI Electric Linear Actuators. It serves as a guide for appropriate electrical provisioning, safety protocols, and performance optimization, ensuring that the actuators function efficiently, safely, and effectively in various applications.

    Feel free to use the embedded Ohm’s law calculator for instantaneous results to facilitate your projects and applications. Enter any two knowns in the calculator below to find the 3rd

      Ohm's Law Calculator

      Ohm's Law Calculator


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