E-Light: Circuit Simulator

E-Light looks simple. It solves like an engineer.

Learn electrical engineering by building real circuits.

E-Light combines an interactive circuit simulator with professional electrical calculators in one modern learning platform.

At the heart of E-Light is a circuit simulator powered by a real Modified Nodal Analysis (MNA) physics engine. Place industrial electrical components onto the canvas, connect them terminal-to-terminal, press *Run*, and watch your circuit come alive with live voltage, current, and power calculations.

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◆ THE SIMULATOR ◆

The heart of E-Light

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▸ A real MNA physics engine solves the entire circuit on every change — series, parallel, and three-phase

▸ 125+ real industrial components: contactors, MCBs, RCDs, overload relays, VFDs, timers, 3-phase motors, sensors, CTs, energy meters and more

▸ Two wiring styles: clean 90° straight runs or classic curved wires — switch anytime, your circuits keep both

▸ Lock components in place: tap the padlock to keep panels and components fixed while you wire — locked components still work and can still be edited

▸ Clear terminal colors: L, N, phases, DC and earth share one consistent color on every component

▸ Make it fail safely: overload a breaker, and it trips; drop a phase, and the relay reacts — zero risk, zero smoke

▸ Live readouts for voltage, current, power, and energy, like a real test bench

▸ Practice motor-control wiring: Start/Stop, On-Time Delay, reversing, and seal-in circuits

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◆ PLUS PROFESSIONAL ENGINEER-GRADE CALCULATORS ◆

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When you need a fast, defensible answer, *20 are built in*:

◈ Ohm's Law

◈ Power (1Φ / 3Φ)

◈ Voltage Drop

◈ Wire Size

◈ Motor FLC

◈ Breaker Sizing

◈ Short Circuit

◈ Ground Fault Loop

◈ Relay IDMT

◈ Power Factor Correction

◈ VFD Speed

◈ Earthing Conductor

◈ Busbar Sizing

◈ UPS Sizing

◈ Battery Backup

◈ Generator Sizing

◈ Generator Fuel

◈ Residential Load

◈ Lighting Design

◈ Resistor Colour Code

— built to recognized standards. With *Pro*, each calculator also reveals the equation behind the result, so you can check the formula, not just the number.

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◆ IN YOUR LANGUAGE ◆

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E-Light speaks *10 languages*: English, العربية, Español, Français, Português, 简体中文, हिन्दी, Bahasa Indonesia, Deutsch and Русский.

Component names, calculator labels, and simulation messages are all translated, with technical terminology chosen to match how electricians and engineers actually speak in each language. Switch anytime from the globe on the home screen or in Settings.

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◆ BUILT FOR LEARNING ◆

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Designed for engineers, technicians, educators, and students who want to learn, and instructors who want a safe, zero-equipment lab in the classroom. Practice and better understand electrical systems in a safe digital environment.

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◆ A MODERN ELECTRICAL LAB ◆

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✦ No physical equipment required

✦ Safe experimentation with no live voltage

✦ Learn anywhere, on phone or tablet

✦ Designed to support practical electrical education

✦ Light, Dark or System theme — comfortable on the eyes, day or night

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◆ WORKS ACROSS YOUR DEVICES ◆

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Sign in once, and your projects sync across *Mobile ▸ Desktop ▸ Tablet*. Start a circuit on one device and continue on another.

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◆ E-LIGHT PRO ◆

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E-Light Pro is an optional subscription that removes ads, reveals the formula behind every calculator, and unlocks the full 125+ component library and cloud sync. The simulator and all 20 calculators are available without a subscription, with a starter set of components and local saves. Manage subscriptions in Google Play.

✉ Questions or feedback: support@elight.app