LED Power Calculator Home›Electronics Calculators›LED Calculators›LED Power Calculator This calculator requires JavaScript. Key formula:P = V_f × I_f | Efficiency = P_LED / P_system Calculate LED Power Consumption, Efficiency, and… read more
Blog
LED Resistor Calculator
LED Resistor Calculator Home›Electronics Calculators›LED Calculators›LED Resistor Calculator This calculator requires JavaScript. Key formula:R = (V_supply – V_LED) / I_LED Find the Right Current-Limiting Resistor for Your LED Quick-fill a… read more
Resistor Noise Calculator
Resistor Noise Calculator Home›Electronics Calculators›Resistors›Resistor Noise Calculator This calculator requires JavaScript. Key formula:V_n = √(4kTRΔf) Enter Resistance, Temperature, and Bandwidth Audio (10kΩ / 20kHz) RF (50Ω / 1MHz) Sensor (1MΩ… read more
Resistor Attenuator Calculator
Resistor Attenuator Calculator Home›Electronics Calculators›Resistors›Resistor Attenuator Calculator This calculator requires JavaScript. Supports T-pad, Pi-pad, and L-pad topologies. Enter Attenuation, Impedances, and Topology 50Ω / 6 dB T-pad 75Ω / 10… read more
RS485 Termination Resistor Calculator
RS485 Termination Resistor Calculator Home›Electronics Calculators›Resistors›RS485 Termination Resistor Calculator This calculator requires JavaScript. Key rule:R_term = Z_0 (cable impedance) | V_diff must exceed 200 mV Enter Cable and Bias Network… read more
Braking Resistor Calculator
Braking Resistor Calculator Home›Electronics Calculators›Resistors›Braking Resistor Calculator This calculator requires JavaScript. Key formula:R_min = V_DC² / P_brake | P_cont = P_brake × Duty% Enter Drive and Motor Parameters 230V /… read more
Bleeder Resistor Calculator
Bleeder Resistor Calculator Home›Electronics Calculators›Resistors›Bleeder Resistor Calculator This calculator requires JavaScript. Key formula:T = -RC × ln(V_safe / V_0) | R = -T / (C × ln(V_safe / V_0)) Enter… read more
Current Sense Resistor Calculator
Current Sense Resistor Calculator Home›Electronics Calculators›Resistors›Current Sense Resistor Calculator This calculator requires JavaScript. Key formulas:V_sense = I x R | P = I² x R | R = V /… read more
Pull-Up Resistor Calculator
Pull-Up Resistor Calculator Home›Electronics Calculators›Resistors›Pull-Up Resistor Calculator This calculator requires JavaScript. Key formulas:R_min = (Vcc – V_OL) / I_OL | R_max = (Vcc – V_OH) / (N x I_leak) Enter… read more
Shunt Resistor Calculator
Shunt Resistor Calculator Home›Electronics Calculators›Resistors›Shunt Resistor Calculator This calculator requires JavaScript. Key formulas:R = V / I | P = I x R | V = I x R V… read more
Series and parallel resistor calculator
Series & Parallel Resistor Calculator Home›Electronics Calculators›Resistors›Series & Parallel Resistor Calculator This calculator requires JavaScript. Key formulas:Series: R_total = R1 + R2 + R3 + … | Parallel: 1/R_total =… read more