Live Lessons

Seven tracks, from one resistor and one capacitor to the edges on a circuit board. Every lesson runs on a live circuit: predict the waveform, probe it, then prove it with the math.

13 live · 1 in the lab

Time & energy

1 · LIVE

The RC network →

One pole, four views. Probe loading.

2 · LIVE

RL and the inductive kick →

Why relays need flyback diodes.

3 · LIVE

RLC: damping and Q →

Poles leave the real axis.

Frequency domain

4 · LIVE

Impedance as geometry →

Phasors you can drag.

5 · LIVE

Filter families →

Butterworth vs Bessel vs Chebyshev, in the time domain.

Feedback

6 · LIVE

The op-amp is a pole →

GBW, slew and the ideal-model lie.

7 · LIVE

Phase margin you can see →

Ringing, peaking and the Nyquist point.

Mixed signal

8 · LIVE

Sampling and aliasing →

Folding, from the spectrum's point of view.

9 · COMING SOON

Driving an ADC

Kickback, settling and the charge bucket.

Digital is analog

10 · LIVE

Edges and reflections →

When a trace becomes a transmission line.

11 · LIVE

Ground bounce →

L·di/dt in every package pin.

12 · LIVE

Metastability →

The flip-flop as a balanced ball.

Power

13 · LIVE

The buck converter →

Volt-seconds, ripple and the LC corner.

Measurement

14 · LIVE

What your probe adds →

The ground lead's ring and the rise-time budget.