Parallel Resonant Frequency Calculator

This tutorial presents an overview of the concept of Parallel Resonant Frequency, a key principle in the field of electrical engineering and physics. This topic centers on the relationships and calculations related to the value of a capacitor and inductance. Understanding this principle is critical in designing and analyzing electric circuits, particularly those involving alternating current (AC).

Parallel Resonance in LC Circuit Calculator
Parallel Resonant Frequency Calculator Results
Resonant frequency = Hz

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Example Formula

The formula for the resonant frequency (f) in a parallel LC circuit (a circuit with a capacitor and an inductor) is given by:

f = 1 / (2π√(LC))


  1. f: The resonant frequency of the circuit
  2. L: The inductance of the inductor in the circuit
  3. C: The capacitance of the capacitor in the circuit

Who wrote/refined the formula

The resonant frequency formula for a parallel LC circuit is a natural outcome of the principles of electromagnetism, specifically the laws governing inductive and capacitive reactance. Its difficult to attribute the formula to a single individual, as it has been refined over time with the progression of our understanding of electric circuits.

Real Life Application

One practical application of parallel resonant frequency is in tuning circuits for radios and televisions. These circuits must be able to select the correct signal from the many that are broadcast simultaneously. By adjusting the resonant frequency, a device can be tuned to pick up a specific signal while ignoring others.

Key individuals in the discipline

Oliver Heaviside, a self-taught English electrical engineer, made substantial contributions to the field of electrical circuit analysis during the late 19th century. His work greatly improved our understanding of capacitive and inductive effects in transmission lines, laying the groundwork for modern electrical circuit theory.

Interesting Facts

  1. Resonance is a fundamental principle not only in physics and electrical engineering, but also in various fields like mechanical engineering and acoustics.
  2. The manipulation of resonant frequencies is what allows us to receive clear broadcasts on our radios and TVs, fundamentally changing the way we access information and entertainment.
  3. The understanding of resonant frequencies has greatly expanded our ability to create sophisticated electronic devices and has greatly contributed to the digital revolution.


Understanding the principle of parallel resonant frequency and the related calculations are vital in the fields of physics and electrical engineering. These concepts have provided the basis for many technologies we rely on today, including radios, televisions, and many other electronic devices.

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