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⚡ BJT / MOSFET Transistor

I-V characteristic curves · Drag load line to move Q-point · Switch BJT / MOSFET

Transistor Type

BJT Parameters

Q-Point (Operating Point)

V_CE —
I_C —
Region —

🔧 BJT / MOSFET Transistor — I-V Curves

Visualise BJT and MOSFET transistor I-V characteristic curves. Drag the load line to set the quiescent point (Q-point). Switch between NPN BJT and N-channel MOSFET models.

🔬 What It Demonstrates

A transistor's I-V curves map the relationship between collector/drain current and voltage for different base/gate inputs. The Q-point — where the load line intersects the active characteristic — determines the operating region: cutoff, active, or saturation.

🎮 How to Use

Switch between BJT and MOSFET modes. Adjust the base current (BJT) or gate voltage (MOSFET) to see different I-V curves. Drag the load line to move the Q-point between regions.

💡 Did You Know?

The MOSFET is the most manufactured device in human history — over 13 sextillion (1.3 × 10²²) have been produced since 1960. A modern CPU contains billions of MOSFETs, each switching billions of times per second.