Description
Calculate one ideal series capacitor’s reciprocal-capacitance voltage share and signed voltage.
Ideal electrical component relations assume a stated topology, fixed parameters and coherent units. A local voltage, current or transformation term can be algebraically valid without accounting for parasitics, ratings or safe practical connections.
Calculate one ideal series capacitor’s reciprocal-capacitance voltage share and signed voltage.
When to use this tool
Use Capacitor Series Voltage Share when checking one explicit ideal-component or divider relationship.
How to use the tool and how it works
- Enter capacitances, referenceIndex, supplyVolts. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read voltageShare, referenceVoltage. Use the output convention below.
Require a nonempty positive capacitances array and valid zero-based referenceIndex. Set weights[i] = min(capacitances)/capacitances[i]. voltageShare is selected weight divided by the total, using explicit zero-weight boundary branches; referenceVoltage = supplyVolts*voltageShare.1
After scaling reciprocal capacitances, the selected and remaining weights are passed to the pair-divider operation at unit supply. Explicit zero-weight branches handle underflow and single-element boundaries before that call.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| capacitances | Capacitances | Required. Array of finite number; maximum items 256. |
| referenceIndex | Zero-based index of the capacitor whose voltage share is requested. | Required. Safe integer; minimum 0. |
| supplyVolts | Supply Volts | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| voltageShare | Voltage Share | Required. Finite number. |
| referenceVoltage | Reference Voltage | Required. Finite number. |
{
"input": {
"capacitances": [
2,
4,
4
],
"referenceIndex": 0,
"supplyVolts": 12
},
"output": {
"voltageShare": 0.5,
"referenceVoltage": 6
}
}Limitations and assumptions
- This assumes equal charge in an ideal series string with compatible capacitance units. Scaling reduces overflow risk but extreme ratios can underflow to zero; initial charge, leakage and transient safety are omitted.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a complete circuit model and qualified practical design when loading, nonlinearity, transients or safety limits matter.
References
Similar or alternative tools
- Current Divider Conductance Fraction
fraction = branchConductance/totalConductance; branchCurrent = totalCurrent*fraction.
- Delta Wye Single Impedance Branch
branch = adjacentFirst*adjacentSecond divided by that sum.