## Capacitor Reactance Calculator

This tool calculates the capacitive reactance Xc Enter Formula Xc = 1/(2π*f*C) Example Calculation At a frequency of 10 kHz, with a Capacitance value of 1 μF has a reactance …

## 24V LED Resistor Calculator

This calculator finds the resistor value to be used with an LED and a +24 Volt supply. It also provides the power dissipation in the resistor – an important number …

## 5V LED Resistor Calculator

This calculator finds the resistor value to be used with an LED and a +5 Volt supply. It also provides the power dissipation in the resistor – an important number …

## Arduino LED Resistor

The Arduino  Input/Output (I/O) pins can be used to control an LED and make it blink. It does this, by turning the output pin on and off. Arduino Resistor …

## 12V LED Resistor Calculator

This calculator finds the resistor value to be used with an LED and a +12 Volt supply. It also provides the power dissipation in the resistor – an important number …

## Why is a Resistor Required for an LED?

A current limiting resistor is used in series with a Light Emitting Diode (LED). In this post we will explain why we need this resistor. LED Current and Voltage Specifications …

## Parallel Circuit Voltage Calculator

Use this tool to calculate the equivalent impedance of any number of resistors in parallel, the voltage drop across each and the total current. There are two configurations considered in …

## Vpp to Vp Calculator

This tool converts a peak-to-peak voltage to peak voltage. Referring to the picture of a sine wave above, there are three different voltage levels: Formula Vp = Vpp/2 Vp = …

## Total Resistance Calculator

This calculator determines the total effective resistance of any number of resistors in series and parallel configurations. Series Resistance Calculator Enter the resistor values separated by commas. Series Resistance Formula …

## Total Resistance Calculator – Series

This calculator determines the total effective resistance of any number of resistors in a series configuration. Series Resistance Calculator Enter the resistor values separated by commas. Series Resistance Formula Rtotal …