Interactive simulation
Sample a sine too slowly and watch the alias ghost appear.
Slow-motion live view (0.15x). Watch the red reconstruction collapse into a slow ghost sine when the signal frequency crosses the Nyquist limit (half the sample rate). Time is counted from the present sampling instant: 0 is now, at the right-hand edge, and the second already sampled runs to its left.
Battery dischargeLi-ion, LiFePO4, NiMH and alkaline curves under real load.
Bode plotGain against frequency on a log axis — where a filter actually stops working.
Boost converterCoil, switch and diode turning 12 V into 24 V — and the input current the load never sees.
Buck converterSwitch, coil and diode making 12 V into 5 V — watch the ripple and the CCM edge.
Class-AB crossoverThe notch you hear at every zero crossing, and the bias current that closes it.
Comparator & hysteresisWhy a noisy signal needs a Schmitt trigger — watch the chatter meter.
Current mirrorOne transistor sets the current, its twin copies it — until the load runs out of headroom.
DC motor start-upSwitch it on with the shaft stopped and nothing but the winding resistance limits the current.