HOW TO CALCULATE EFFECTIVE AND LOW IMPEDANCE

How to calculate a 90-degree bend in the pigtail channel

How to calculate a 90-degree bend in the pigtail channel

The calculation formula is: BA = (Angle × π/180) × (Radius + K-factor × Thickness) Where Angle: is the bending angle in degrees (for a 90-degree bend, it is 90°). Then input the bend angle to get the arc length, bend allowance and bend deduction. With this bend allowance calculator, you will learn how to calculate the length of a sheet metal bend so you can optimally create metal bendings without a bend allowance chart. It works as a bend deduction calculator too! This tool calculates bend allowance/deduction based on material thickness.

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How to calculate a short circuit in an optical cable

How to calculate a short circuit in an optical cable

Step-by-step method with adiabatic equation, I²t let-through energy & worked examples. Understanding short-circuit current in cables is essential for ensuring safety, reliability, and IEC compliance. Accurate calculations help select correct cable sizes and protective devices, preventing failures in electrical systems. The following calculator computes the expected time for a cable, conductor, or bus bar to rise in temperature under short circuit or short-time overcurrent conditions.

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How to calculate a 10dB optical attenuator

How to calculate a 10dB optical attenuator

A dB = 10 · log 10 (P in /P out) If you know attenuation in dB, switch to "Output values from known dB attenuation". Of course, you also need to be able to determine the attenuator value in decibels required for your application. In this example let's assume that the maximum optical input power a fiber-optic receiver can operate with is -6dBm. The tool computes resistor values in different configurations: R1 = Zo [10dB/20 + 1] / [10dB/20 – 1] R2 = Zo/2 [10dB/10 – 1] / [10dB/20] where R1 is the shunt resistor (to ground). Determine output power in dBm and milliwatts, power reduction ratio, transmittance percentage, and total system loss including insertion loss.

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How to calculate the fill degree of cable trays

How to calculate the fill degree of cable trays

Size the tray by calculating total cable cross-sectional area and dividing by the allowable fill percentage (typically 40%). Our free calculator helps you determine the correct tray size based on NEC and IEC standards. Follow these simple steps: Define Tray Dimensions: Enter the width and depth of your planned cable tray (in mm or inches). NEC Article 392 limits fill ratios based on cable type and arrangement — single-layer or stacked — to ensure adequate ventilation, maintain current-carrying capacity, and provide space.

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