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For Engineers · Audio Amplifier

Audio Amplifier for a fuse rating

Built for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed. Simulate a fuse rating live below — adjust the inputs and watch it respond, right in your browser.

Op-Amp CircuitsLive

Controls

Presets

The op-amp is the fundamental building block of analog electronics. With negative feedback, its gain is set entirely by external resistors: an inverting amp gives −R2/R1, a non-inverting amp 1+R2/R1. An integrator uses a feedback capacitor to output the running integral of its input.

▶ Run in Python

Data Inspector

Configurationinverting
Gain-10.00×
Output-10.00 V
Statuslinear

Governing equation

Reading this result: Inverting gain is −R2/R1 = -10.00×: the output is a scaled, flipped copy of the input, set entirely by the resistor ratio.

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

2

Filter Designer

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Analog Filter DesignerLive

Controls

Presets

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

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.

Sound Levels (dB SPL)Live

Controls

Presets

Decibels are logarithmic, so loudness does not add the way you expect: two identical sources are only 3 dB louder than one, and ten are 10 dB. Meanwhile a point source drops 6 dB every time the distance doubles (the inverse-square law). Sustained exposure above 85 dB risks hearing damage.

▶ Run in Python

Data Inspector

Combined at 1 m85.0 dB
At 4 m73.0 dB
Doubling sources+3 dB
Risksafe range

Governing equation

Reading this result: A single source falls from 85 dB to 73 dB across 4 m — about 6 dB lost each time the distance doubles.

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

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Frequently asked questions

Is this good for engineers?
Yes — this version of "Audio Amplifier for a fuse rating" is framed for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.