Electronics Calculators

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

Pull-Up Resistor Calculator Home›Electronics Calculators›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 Home›Electronics Calculators›Shunt Resistor Calculator This calculator requires JavaScript. Key formulas:R = V / I | P = I x R | V = I x R V… read more

Series & Parallel Resistor Calculator Home›Electronics Calculators›Series & Parallel Resistor Calculator This calculator requires JavaScript. Key formulas:Series: R_total = R1 + R2 + R3 + …  |  Parallel: 1/R_total =… read more

Electrical Power Calculator Home›Electronics Calculators›Electrical Power Calculator This calculator requires JavaScript to function. Here are the key formulas for manual calculation: P = V × I  |  P = I²… read more

Voltage Divider Calculator Home›Electronics Calculators›Voltage Divider Calculator This calculator requires JavaScript to function. Here is the key formula for manual calculation: Vout = Vin × R2 / (R1 + R2)… read more