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Electrical Calculators

This copper loss calculator finds the resistive (I²R) power loss in a winding, the main load…

This coaxial cable impedance calculator finds the characteristic impedance Z₀ from the inner and outer conductor…

This specific absorption rate calculator finds the SAR — the RF power absorbed per unit mass…

This cable size calculator finds the conductor cross-section needed to keep the voltage drop within a…

This figure of merit calculator finds the quality factor (Q) of a resonant system from its…

This helical antenna calculator estimates the gain and key dimensions of an axial-mode helix. Enter the…

This instrumentation amplifier calculator finds the gain of the classic three-op-amp in-amp from the gain-setting resistor.…

This 555 timer calculator covers both astable (oscillator) and monostable (one-shot) modes. Enter your resistor and…

This wire diameter calculator finds a conductor’s diameter from its cross-sectional area, or from its AWG…

This nichrome wire calculator finds the resistance of a length of nichrome, or the length needed…

This zener diode calculator sizes the series resistor for a zener voltage regulator and checks the…

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