How do I simulate an LED driver?

Open this page and use the live Power Supply Designer tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive an LED driver from your own measurements.

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Power Supply Designer for an LED driver

Simulate an LED driver live in your browser. This runs the real Power Supply Designer solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

RLC Circuit

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RLC Circuit StudioLive

series RLC step response

Controls

Apply a step voltage to a series RLC circuit and watch charge and current respond — under-, over-, or critically damped.

Presets

Resistance R

Inductance L

Capacitance C

▶ Run in Python

Data Inspector

Damping ζ0.750

Regimeunderdamped

ω₀1.000

Governing equation

1 \overset{q}{¨} + 1.5 \overset{q}{˙} + \frac{q}{1} = V_{0}, ω_{0} = \frac{1}{L C} = 1.000, ζ = \frac{R}{2} \frac{C}{L} = 0.750

Reading this result: ζ = 0.750 < 1: underdamped. With ω₀ = 1.000 rad/s the charge overshoots and rings, oscillating while it decays toward its steady value. Lower ζ means more ringing.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Filter Designer

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Analog Filter DesignerLive

RC & RLC frequency response

Controls

Presets

Resistance R (Ω)

Capacitance C (nF)

Passive filters shape a signal's frequency content with resistors, capacitors, and inductors. An RC low-pass or high-pass has a cutoff at 1/(2πRC) where the response drops 3 dB; an RLC bandpass resonates at 1/(2π√(LC)) with sharpness set by its quality factor Q.

▶ Run in Python

Data Inspector

Cutoff fc1.6 kHz

Resonance f₀5.0 kHz

Quality factor Q0.32

Governing equation

∣ H (f) ∣ = \frac{1}{1 + ( f /1592 ) ^{2}}

Reading this result: Low-pass: signals below the 1.6 kHz corner pass, above it they roll off at 20 dB/decade, and the response is exactly 3 dB down right at the corner.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Thermal Resistance

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Composite Wall Heat TransferLive

R-value & U-value

Controls

Presets

Drywall (mm)

Insulation (mm)

Brick (mm)

Inside temp (°C)

Outside temp (°C)

Heat flows through a wall like current through resistors in series. Each layer's thermal resistance is its thickness over its conductivity; adding them gives the total R-value, and the heat flux is the temperature difference divided by it. Insulation, with very low conductivity, dominates the R-value — the steep temperature drop shows where it does its work.

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Data Inspector

Total R-value2.71 m²K/W

U-value0.37 W/m²K

Heat flux9.6 W/m²

Governing equation

R = \sum \frac{L _{i}}{k _{i} A} = 2.71 \frac{m ^{2} K}{W}, Q = \frac{Δ T}{R} = 9.6 \frac{W}{m ^{2}}

Reading this result: The insulation layer carries the most thermal resistance, so the temperature falls most steeply across it. A total R-value of 2.71 m²K/W lets 9.6 W/m² flow for this 26°C difference.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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About this simulation

The full Power Supply Designer tool models an LED driver with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

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Other ways to simulate an LED driver

Fourier Transform for an LED driver Bode Plot for an LED driver Filter Designer for an LED driver PID Controller for an LED driver Transmission Line for an LED driver Op-Amp Circuits for an LED driver

Frequently asked questions

How do I simulate an LED driver?: Open this page and use the live Power Supply Designer tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive an LED driver from your own measurements.