RC discharging circuits use what is called the RC time constant which is an inherent property exhibited by an resistor-capacitor combination. This time constant determines how fast the capacitor discharges and it does so in an exponential way, meaning the voltage does not just drop steadily; it decreases more and more quickly as time gradually […]
Calculate
Pull-up Resistors and Pull-down Resistors: How to Calculate
In my practical works, when connecting digital logic gates to external circuits or devices, I personally ensure that their inputs and outputs are properly set to provide the correct switching conditions. This is where Pull-up Resistors come into play, because they help make sure that the inputs or outputs are functioning as per the expectations. […]
How to Calculate Star Delta Transformation
With methods like Kirchhoff’s Law, Mesh Current Analysis, and Nodal Voltage Analysis, we’ ve already mastered fundamental circuit analysis and can easily address problems with simple resistive networks. But how about complex three phase circuits? This is where the Star- Delta Transformation becomes so useful. This effective method greatly reduces the mathematical complexity of balanced […]
How to Calculate Mesh Current in a Circuit
Mesh current analysis calculates currents in closed loops of a circuit by assigning hypothetical loop currents and using Kirchhoff’s Voltage Law. Although the basis for evaluating any electrical circuit is provided by Kirchhoffs Current Law (KCL) and Voltage Law (KVL), other methods such as Mesh Current Analysis and Nodal Voltage Analysis are also available. These […]
How to Calculate Power Factor Correction
Power Factor Correction (PFC) is a technique, which addresses this current-voltage mismatch in AC circuits. It uses capacitors which have an opposite reactive effect to inductors (common in motors and transformers), to bring the current and voltage back into alignment. This improves the overall efficiency of the circuit, by reducing the reactive power component and […]
How to Calculate Sinusoidal Waveforms
In this post we comprehensively discuss sinusoidal waveforms and learn how to calculate the involved specifications and parameters. What are Sinusoidal Waves? Basically, sinusoidal waveforms are periodic waveforms whose shape can be plotted using the sine or cosine function of trigonometry. We commonly refer to electrical circuits supplied by sinusoidal waveforms as “AC” voltages and […]