Active Semiconductor simulations, animations and java applets

Astable Multivibrator built using Bipolar Transistors This schematic has two astable states. In state 1 transistor T2 is conducting and transistor T1 is non-conducting. The feedback between the two transistors is achieved using capacitors C1 and C2. The time period for each state can be adjusted

Astable Multivibrator with Field Effect Transistors (FETs)

Astable Multivibrator (Oscillator)

Bistable Multivibrator Applet The circuit is a bistable multivibrator circuit, also known as a flip-flop

Body effekt FET, change Ugs and Uds

Class-D Amplifier

CMOS

CMOS basic gate demonstration this page demonstrates how CMOS transistors and basic gates work

Colpitts Oscillator

Curve tracer on-line transistor characteristic curve tracer, NPN Bipolar, e.g., 2N3904, PNP Bipolar, e.g., 2N3906, n channel JFET, e.g., 2N5457, p channel JFET, e.g., 2N5460, n channel MOSFET, e.g., 2N7000, p channel MOSFET, e.g., BS250

Darlington Pair

Diac

Differential Amplifier

Electrostatics of MOS capacitor inversion channel and threshold voltage

Emitter-Coupled LC Oscillator

Energy levels in semiconductors Energy levels in semiconductors, swf file

FET the FET is controlled by its gate voltage

Générateur de courant constant en Français

Générateur de courant à transistor bipôlaire en Français

Hartley Oscillator

Inductive Proximity Sensor

Inductive proximity switch

JFET

JUNCTION FIELD EFFECT TRANSISTOR (JFET) Applet

LDR transistor circuit (dark on)

LDR transistor circuit (light on)

Modes de fonctionnement d'un transistor NPN en Français

Monostable en Français

Monostable multivibrator Monostable multivibrator with transistors

MOSFET Characteristics n-channel MOSFET output characteristics. This applet calculates and plots the output characteristics of an n-channel (enhancement-mode) MOSFET

MOSFET operation 1 dependence of inversion channel on the gate source voltage and on the gate drain voltage

MOSFET operation 2 output characteristics: Id versus Vds

N-channel enhancement MOSFET N-channel enhancement MOSFET

N-channel JFET

NPN transistor amplifier NPN transistor common-emitter amplifier

Push pull amplifier Push pull amplifier

Relaxation Oscillator

Schmitt trigger This circuit is a Schmitt Trigger, a type of comparator. It measures the input to see if it is above or below a certain threshold. The threshold varies to make it less likely that the output will switch rapidly back and forth due to a noisy input near the threshold

Schottky barrier Schottky barrier, swf file

Selbstsperrender PMOS-Transistor

Selbstleitender NMOS-Transistor

Selbstleitender PMOS-Transistor

Semiconductor Device Movies

Semiconductor Diode

Semiconductors Semiconductors junction potential

Sine Wave Generator Sine Wave Generator

Single-stage BJT amplifier circuits (CE, CB, and CC) Single-stage BJT amplifier circuits

Single-stage MOSFET amplifier circuits (CS, CG and CD)

Thyristor Thyristor animation

Tunnel Diode Relaxation Oscillator