Interactive 3D simulators for electric machines and electronics
Open a motor, generator, transformer or semiconductor, change its real parameters and watch the 3D model and live charts respond.
- Free
- No sign-up
- 6 languages
- Classroom-ready
Find a simulator
Search by name or topic, or filter by category. Popular models come first.
22 simulators
Electrical machines
3-phase inductionExplore how a rotating magnetic field produces torque in a squirrel-cage rotor.Open simulator 
Electrical machines
Brushed DCExplore how brushes and a commutator keep the armature torque rotating in one direction.Open simulator 
Electrical machines
Brushless DCObserve how the inverter energizes three-phase stator windings in sequence to rotate a permanent-magnet rotor.Open simulator 
Semiconductors
P–N junction diodeSee how the depletion region enables forward current, blocks reverse current and changes during breakdown.Open simulator 
Semiconductors
N-channel MOSFETSee how gate voltage creates a conductive channel and controls drain current between source and drain.Open simulator 
Semiconductors
LEDSwitch between real LED colors and watch why the current, not the voltage, is what you actually control — and why a bare LED on a supply is always one step from burning out.Open simulator 
Passive components
ResistorObserve how resistance limits current, drops voltage and converts electrical energy into heat.Open simulator 
Transformers & magnetics
TransformerObserve how alternating magnetic flux transfers energy from the primary winding to the secondary winding.Open simulator 
Electrical machines
Single-phase inductionSee why a single winding cannot start a motor on its own — and how a second winding, a capacitor and a centrifugal switch give it a push.Open simulator 
New
Electrical machines
Wound-rotor inductionAdd resistance to the rotor through the slip rings and watch the torque–speed curve shift: higher starting torque, lower starting current, adjustable speed — paid for in slip power.Open simulator 
Electrical machines
Synchronous (PMSM)See why a synchronous rotor locks exactly to the rotating field — and what happens when the load pulls it out of step.Open simulator 
Electrical machines
StepperWatch the rotor advance one discrete step per pulse — and see what happens when the pulse rate outruns the available torque.Open simulator 
Electrical machines
ServoSee how a closed loop holds the rotor on the commanded speed — and how the following error grows with speed until you raise the loop gain.Open simulator 
New
Electrical machines
Synchronous (wound-field)Turn the DC field current and watch the power factor swing from lagging through unity to leading — the motor that can also correct the grid. See the V curves, the load angle and the pull-out limit.Open simulator 
New
Electrical machines
Universal motorSwitch between AC and DC and watch a series motor keep turning the same way, because torque follows the square of the current. See the speed drop on AC, the runaway at no load and how a triac sets the speed.Open simulator 
New
Electrical machines
Synchronous reluctanceA rotor of plain laminations, cut by flux barriers, makes torque from saliency alone: no magnets and no windings. Change the saliency ratio, the current angle strategy and the speed to see MTPA, the power factor ceiling and field weakening.Open simulator 
New
Electrical machines
Switched reluctanceStator and rotor both have salient poles, and the rotor carries neither magnets nor windings. A converter energises one phase after another as a rotor pole approaches alignment. Move the turn-on and turn-off angles to see the current pulse, the torque ripple and the negative torque of a late turn-off.Open simulator 
New
Electrical machines
Linear inductionAn induction motor cut open and rolled flat. The stator makes a field that travels at 2·τ·f instead of rotating, and a conductive plate on back iron is dragged along with slip, giving thrust instead of torque. Change the air gap, the plate and the track to see the poor power factor, the end effect and a launch run.Open simulator 
New
Electrical machines
DC generatorA DC generator turns shaft power into direct-current power. Its EMF is E = k·Φ·ω, so it follows the speed and the field flux. Change the connection, the field rheostat, the speed and the lamp load to watch a shunt machine build up from residual magnetism, to find the critical resistance and speed beyond which it fails, and to compare the load characteristics and the voltage regulation.Open simulator 
New
Electrical machines
Synchronous generator (alternator)A turbine turns the salient-pole rotor while the DC field sets the EMF E_f = V + jXs·I. Run it islanded to see how load size and power factor move the voltage, or parallel it with the grid: the turbine sets P, the field sets Q, and the load angle shows how close you are to pole slipping.Open simulator 
New
Electrical machines
Doubly-fed induction generator (DFIG)A wind-turbine generator: the stator is tied to the grid while a back-to-back converter feeds the slip rings with only about a third of the power. See the speed follow the wind, the rotor power reverse at synchronous speed and the stator reactive power follow its set-point.Open simulator 
Semiconductors
Zener diodeSee how a Zener diode is built to survive reverse breakdown on purpose — once the knee is reached, the voltage across it barely moves even as the current swings.Open simulator Built for classrooms
From the projector to the homework folder
Everything a teacher or student needs to take an experiment out of the browser.
Share a link
Send an exact setup to your class. Paste the link into Google Classroom, your LMS or a chat and everyone sees the same experiment.
PDF report
Export parameters, readings, curves and a 3D snapshot as a one-page PDF, or download the data as CSV.
6 languages
English, Türkçe, Español, Português, Deutsch and Italiano, switchable at any time.
Learn with guides
Short, practical explanations that go with the simulators.
What is Curvo Studio?
Curvo Studio is a free, browser-based app with interactive 3D simulators for motors, diodes, LEDs, MOSFETs and transformers. See what it does and who it is for.
Read the guide →How the simulations in Curvo Studio work
The equations behind each Curvo Studio simulator, from the Shockley diode model to motor slip, and why they are lesson models rather than SPICE simulations.
Read the guide →Using Curvo Studio in the classroom
Ideas for teachers: live demos, student activities and PDF or CSV lab reports with Curvo Studio's free browser-based electronics and electrical simulators.
Read the guide →