Interactive Bioinstrumentation.

A growing set of interactive demonstrations for BMEN90033 — built in JavaScript and HTML by Dr. Callum Vidler to make the ideas behind biomedical circuits visible, tunable, and intuitive.

biopotentials semiconductors amplifiers transfer functions

02week 2 · biopotentials

01 Myelination → 02 Action Potential Dipole → 03 Volume Conductor →

03week 3 · diodes

00 Electron Cloud Model → 01 Semiconductor Bands → 02 Semiconductor Doping → 03 P-N Junction → 04 Light Emitting Diode → 05 Laser Diode → 06 Cochlear Implant →

04week 4 · transistors

01 BJT Semiconductors → 02 BJT as a Switch → 03 NPN BJT as an Amplifier →

05week 5 · amplifiers

01 Amplifier Classes → 02 Total Harmonic Distortion → 03 Class D Amplifier → 04 Amplifier Bandwidth → 05 Lab · Interactive Walkthrough →

06week 6 · operational amplifiers

01 Op-Amp Slides →

07week 7 · passive filters

01 Laplace Transform → 02 Modeling Filters → 03 High-Order Filters → 04 Removing Powerline Noise →

extras(transfer functions)

01 Intro to Transfer Functions → 02 The Inverted Pendulum → 03 Pupillary Light Reflex →

08week 8 · active filters

01 Complex Multiplication and Division → 02 Interactive Transfer Function → 03 Cascading Low-Pass Filters → 04 Active Filter Families → 05 Sallen-Key Filters → 06 Filter Applications → 07 What Can Go Wrong →

09week 9 · comparators and signal conditioning

01 Comparators and Timers in Practice → 02 Op-Amp as a Comparator → 03 Schmitt Trigger → 04 Op-Amp as an Oscillator → 05 Multivibrators → 06 Analog-to-Digital Conversion → 07 555 Timer →

10week 10 · Analysis circuits, case studies and digital logic

01 Case Study · Pre-Seizure Spike Detection → 02 Passive Peak Detectors → 03 Active / Precision Peak Detectors → 04 Digital Logic · Gates, Adders, Multiplexers, Decoders → 05 Apple 1 CPU · The MOS 6502 → 06 Case Study · Mean Absolute Value of an EMG Signal → 07 Case Study · Strain-Sensing Robotic Hand →

Extras

// Extras

Nodal Analysis Tool

Build circuits and step through nodal-analysis solutions.

Simulate ECG Data

Synthesise a single-lead ECG with configurable physiological noise and export as CSV for use as a stimulus in NI Multisim simulations.