For Engineers · Transistor Bias
Transistor Bias for a Class-D amp
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 Class-D amp live below — adjust the inputs and watch it respond, right in your browser.
BJT Transistor BiasLive
voltage-divider Q-point
Controls
Presets
Voltage-divider bias sets a transistor's operating point (Q-point) stably against variations in β. The base voltage fixes the emitter current, and the collector-emitter voltage falls on the DC load line. For a clean amplifier, the Q-point should sit near the middle of the active region.
Data Inspector
Collector current Ic2.52 mA
Vce8.22 V
Base voltage2.11 V
Regionactive
Governing equation
Reading this result: The Q-point sits near mid-load-line — the sweet spot for a linear amplifier, giving the largest symmetric output swing.
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Frequently asked questions
- Is this good for engineers?
- Yes — this version of "Transistor Bias for a Class-D amp" 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.