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.

<br>◆ THE SIMULATOR ◆<br>The heart of E-Light<br>
▸ 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
▸ 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

<br>◆ PLUS PROFESSIONAL ENGINEER-GRADE CALCULATORS ◆<br>
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

— 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.

<br>◆ BUILT FOR LEARNING ◆<br>
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.

<br>◆ A MODERN ELECTRICAL LAB ◆<br>
✦ No physical equipment required
✦ Safe experimentation with no live voltage
✦ Learn anywhere, on phone or tablet
✦ Designed to support practical electrical education

<br>◆ WORKS ACROSS YOUR DEVICES ◆<br>
Sign in once, and your projects sync across Mobile ▸ Desktop ▸ Tablet. Start a circuit on one device and continue on another.

<br>◆ E-LIGHT PRO ◆<br>
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