RF Transformer Calculator
This calculator gives the turns ratio of an RF transformer. Enter the input and output impedance. Formula Np/Ns = √(Zp/Zs) where Background What is an RF Transformer? An RF transformer …
Calculators
5V LED Resistor Calculator (with Examples)
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 Calculator
The Arduino [1] 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 for an AC waveform. Referring to the picture of a sine wave above, there are three different voltage levels: Formula Vp …
Total Resistance Calculator
This calculator determines the total effective resistance of any number of resistors in series and parallel configurations. Contents1 Series Resistance Calculator2 Series Resistance Formula3 Example Calculation4 Parallel Resistance Calculator5 Parallel …
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 …
Current Through Voltage Divider Calculator
This tool calculates the current through a voltage divider network consisting of any number of resistors. Enter Formula Using Ohm’s Law, the total current is given by Itotal = Vin/(R1+R2+R3+…) …