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How W55RP20 Can Add Industrial Ethernet Control to an Automated Variac and Stepper System

The original project uses local AVR control, but community members recommended W55RP20 as a practical Ethernet upgrade for remote industrial control.

jakelee

Published July 06, 2026

Original author: Gough Lui · AustraliaOriginal source (new tab)

How W55RP20 Can Add Industrial Ethernet Control to an Automated Variac and Stepper System

Project description

Introduction What Is a Variac? A Variac, also known as a variable autotransformer, is an adjustable AC power supply that allows users to manually increase or decrease output voltage. Unlike fixed transformers, a Variac provides smooth voltage adjustment, making it a valuable tool for: Electronics development and testing Equipment calibration Motor speed control Burn-in testing Laboratory experiments Repair and troubleshooting Because the output voltage is adjusted by rotating the Variac's shaft, precise motor control is often required when automating the process. Project Background This…

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