Transformers and Power Supplies
Power Supply Ripple Calculator
Power Supply Ripple Calculator is meant for one defined transformers and power supplies case. Run a separate case when the equipment, period, or connection changes.
Build the Ripple voltage case
Power Supply Ripple updates live after each input change.
Inputs to verify for Power Supply Ripple
Collect Load current, Capacitance, and Ripple frequency from the same operating case before reading ripple voltage.
- Load current
- Enter load current in A. Default shown: 2 A.
- Capacitance
- Enter capacitance in µF. Default shown: 4700 µF.
- Ripple frequency
- Enter ripple frequency in Hz. Default shown: 100 Hz.
When load current is uncertain, run a low and high case instead of hiding that uncertainty in one entry.
How ripple voltage is calculated
The Ripple voltage value and any supporting metrics belong to this same Power Supply Ripple case, not to a nearby run with different inputs.
Read the Power Supply Ripple equation from the units on this page. A familiar symbol can shift meaning between DC, AC, energy, component, or billing work.
A clean Power Supply Ripple result confirms the arithmetic for ripple voltage; it does not prove the equipment rating or source data is the right one.
Only the entries shown on Power Supply Ripple feed ripple voltage. If another correction factor matters, keep it in the notes or make a separate run.
Boost Converter is a separate worksheet; carry over ripple voltage only with its units and source note.
Applying ripple voltage carefully
The result card gives a comparison point for Power Supply Ripple. Equipment ratings, safety margins, and manufacturer limits still need their own check.
Power Supply Ripple depends on topology, duty cycle, thermal path, ripple, and input voltage range.
A separate Autotransformer Rating run is cleaner when that result becomes the real design question.
Records for load current
Record topology, input range, output load, switching frequency, and thermal assumptions for Power Supply Ripple.
If a later Power Supply Ripple run changes only load current, label it as sensitivity work. Several changed conditions deserve a new baseline.
When your notes point to Smoothing Capacitor, open it after saving this baseline so the two cases do not get mixed.
Detail checks for ripple voltage
Power Supply Ripple depends on topology and thermal path. The equation does not guarantee ripple, EMI, or transient performance.
When ripple voltage becomes an input to another worksheet, copy the value only after the units and source condition have been verified.