Interactive Power Supply Oscilloscope Simulator

📈 Interactive Power Supply Oscilloscope Simulator

A four-channel virtual scope probing every stage of a live power supply. The waveforms are computed numerically — the capacitor really charges through the diodes and really discharges through your load, so the ripple you see obeys V_r(pp) ≈ I/(fC) exactly. Toggle traces like moving a probe; the readout is your DMM.

CH1 AC Input CH2 Rectified CH3 Filtered CH4 Regulated

Rectifier Topology

Input Peak Voltage 17 V

Filter Capacitor 470 µF

Load Resistance 220 Ω

Enable 5 V Regulator (7805, 2 V dropout)

💡 Guided Explorations

1. Dead zones: Set rectifier to HALF with capacitor at 0 µF — count the flat gaps and confirm 60 Hz ripple in the readout. Switch to FULL BRIDGE and watch the gaps fill in at 120 Hz. 2. The ripple equation live: With FULL bridge and a 100 Ω load, step the capacitor 100 → 220 → 470 → 1000 µF and record V_r(pp) each time — it should roughly halve as C doubles. 3. Half vs. full, same cap: Fix C = 470 µF and toggle HALF ↔ FULL: ripple doubles and halves before your eyes. 4. Dropout hunt: Enable the regulator, then lower the capacitor until CH4 develops dips — note the readout flipping from REGULATING to DROPOUT the instant the trough crosses 7 V. 5. Load test: With everything healthy, drag the load from 1 kΩ down to 50 Ω and watch ripple grow linearly with current.