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Zener Diode Resistor Calculator Home›Electronics Calculators›Zener Diode Resistor Calculator This calculator requires JavaScript. Key formula:R = (V_in – V_z) / I_z Find the Series Resistor for Your Zener Diode 5.1V… read more

Voltage Divider with Zener Calculator Home›Electronics Calculators›Voltage Divider with Zener Calculator This calculator requires JavaScript. Key formula:R = (V_in – V_z) / (I_z + I_load) Size the Series Resistor for… read more

LED Driver Calculator Home›Electronics Calculators›LED Driver Calculator This calculator requires JavaScript. Key formulas:P_out = V_out × I_out | P_in = P_out / Efficiency Size a Constant-Current LED Driver 12V LED… read more

LED Power Calculator Home›Electronics 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 Energy… read more

LED Resistor Calculator Home›Electronics 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 common… read more

Resistor Noise Calculator Home›Electronics Calculators›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 Home›Electronics Calculators›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 Home›Electronics Calculators›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

Bleeder Resistor Calculator Home›Electronics Calculators›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 Home›Electronics Calculators›Current Sense Resistor Calculator This calculator requires JavaScript. Key formulas:V_sense = I x R | P = I² x R | R = V /… read more