Want to know the exact current limiter resistor value for a specific LED series string? You can now use this calculator toll to quickly get the precise LED series string resistor value. Calculator by homemade-circuits.com LED Series Resistor Calculator Supply Voltage (Volts) LED Forward Voltage (Volts) LED Current (mA) Number Of LEDs In Series Calculate […]
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LC Resonance Calculator for EV Battery Charger Circuits
This calculator helps estimate resonant frequency or compensation capacitor for a wireless EV charging primary coil. It is for first-step design and learning, not final tuning… Calculator by homemade-circuits.com EV Wireless LC Resonance Calculator EV Wireless LC Resonance Calculator Calculate: Resonant Frequency (Hz)Capacitance (µF)Inductance (µH) First Value: Primary Inductance µHCapacitance µFFrequency Hz Second Value: Primary […]
Calculator to Design a High Power 3kW PFC (Power Factor Correction) Circuit
In this post I will explain how to use this active PFC calculator for calculating high current, high PFC designs. In our example we will be using 230 VAC input and 3 kW output and Vout equal to around 390 V, and we will try to see how each resistor and capacitor gets calculated in […]
SMPS Flyback Boost Converter Calculator
This calculator tool supports a Boost Converter Flyback setup which means now the code considers: Corrected turns ratio and primary voltage logic since the flyback works by storing energy during “ON” time and transferring to secondary during “OFF” time. Flyback boost topology where output voltage is higher than input. An accurate duty cycle formula for […]
Ferrite Core Air Gap Calculator Tool
You can use this calculator in your workshop or while designing an SMPS prototype, to find the exact physical gap required between your ferrite core pieces to hit your target inductance. Flyback Transformer Air Gap Calculator Flyback Transformer Air Gap Calculator Target Primary Inductance (Lp in µH): Primary Winding Turns (Np): Core Cross-Section Area (Ae […]
Shunt Resistor Calculator for Ammeters
Ok so here we have one simple calculator which can help us to calculate the shunt resistor value that we need to connect across a normal ammeter when we want to use that ammeter to measure high current, more than its actual range. So normally, ammeter can measure only small current, like 1 amp or […]