Use Transient to compare the AC input, reservoir output, charge current, and settled efficiency.
Open and run
- Open Examples from the Home ribbon.
- Choose Full-wave bridge rectifier.
- Open Simulate and choose Setup to review the analyses.
- Choose Run for one analysis or Run All for the complete configured set.
- Select a matching Scope view after the run. Use Save as sheet to keep the example or Discard to close it.
Sheets, analyses, and Scope
Bridge + reservoir
Setup: Bridge + reservoir transient
| Analysis | Configuration |
|---|---|
| Bridge + reservoir transientTransient |
|
Scope views and expected results
AC input and reservoir output
Analysis: Bridge + reservoir transient
Waveforms
V(acp)V(vout)- Current
I(C1)
Input and output power
- Pout
R1.power.instantaneous - Pin
-V1.power.instantaneous
Readouts
- Settled DC outputAverage
V(vout) - Settled reservoir ripplePk-Pk
V(vout) - Settled source peakMax
V(acp) - Settled efficiency (Pout / Pin)ratioOfAverages
R1.power.instantaneous / -V1.power.instantaneous
Python scripts
These scripts are included with the example. Review trusted project code before choosing Run.
Capacitor ripple sweep.py
Default sheet: Bridge + reservoir
capacitances = ["100u", "220u", "470u"]
sheet = get_sheet("Bridge + reservoir")
runs = sheet.sweep(C1=capacitances).tran("250m", step="50u", max_step="50u", save="V(vout)")
fig, ax = subplots(1, 1, title="Reservoir capacitor ripple")
ax.set(xlabel="Time", xformat="time", ylabel="Output voltage (V)")
# Compare the last three mains cycles, after startup has settled.
for capacitance, result in zip(capacitances, runs):
output = result.v("vout").window(start="200m")
ax.plot(output, label=f"C={capacitance}")
print(f"C={capacitance}: {output.mean():.2f} V average, {output.pkpk():.2f} V peak-to-peak ripple")
fig.show()