Electronics Tools Resistor Series / Parallel Calculator Calculate the equivalent resistance of two or more resistors connected in series or parallel. Add your resistor values, choose the connection type, and optionally enter a voltage to check current and power. Resistor network diagram Clean schematic drawings showing two resistors in series and two resistors in parallel. … Read more
Electronics Tools LED Resistor Calculator Choose a current limiting resistor for a single LED. Enter the supply voltage, forward voltage, and target LED current to estimate resistance, heat, and a practical standard resistor value. LED with current limiting resistor A simple DC circuit showing a supply, resistor, LED, and ground return. +Vs R LED GND … Read more
Electronics Tools Voltage Divider Calculator Calculate a two-resistor voltage divider. Solve for output voltage, input voltage, R1, or R2, then check divider current and resistor power before using the values in a real circuit. Voltage divider schematic Two resistors in series from input voltage to ground with output taken from the middle node. Vin R1 … Read more
Electronics Tools Resistor Color Code Calculator Decode 4-band and 5-band resistor color codes into resistance and tolerance. Use it when reading through-hole resistors in Arduino, ESP32, sensor, and breadboard circuits. Resistor with color bands A through-hole resistor with live color bands and metal leads. color bands to value significant digits x multiplier, then tolerance What … Read more