Diacs Breakover Voltage Calculator
Extract two observed DIAC sweep thresholds from caller current criterion and compare directional asymmetry; threshold evidence not an ideal device knee model, unsafe test instructions or a universal DB3 voltage.
Description
DIAC directional breakover evidence can be extracted at a chosen current criterion.
DIAC directional breakover evidence can be extracted at a chosen current criterion. The two sweep magnitudes expose asymmetry.1
Enter two nonnegative increasing voltage-magnitude sweeps and aligned nonnegative strictly increasing currents with at least two points each, plus positive detection current. Both crossings must be bracketed. Interpolate and return directional voltages and signed asymmetry.
When to use Diacs Breakover Voltage Calculator
Use Diacs Breakover Voltage Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No universal device knee, default DB 3 rating or test procedure is supplied.
Prepare measured device or circuit evidence with matched frequency, temperature, waveform and calibration conditions. Supply explicit caller ratings and limits.
How to use Diacs Breakover Voltage Calculator and understand its results
- Prepare measured device or circuit evidence with matched frequency, temperature, waveform and calibration conditions. Supply explicit caller ratings and limits.
- Enter positiveVoltageSweepV, positiveSweepCurrentMa, negativeVoltageMagnitudesV, negativeSweepCurrentMagnitudesMa, callerBreakoverDetectionCurrentMa using the field table and calculation rules, then run the tool.
- Read observedPositiveBreakoverV, observedNegativeBreakoverMagnitudeV, signedBreakoverAsymmetryV. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| positiveVoltageSweepV | Positive voltage sweep v | list of number | Required |
| positiveSweepCurrentMa | Positive sweep current ma | list of number | Required |
| negativeVoltageMagnitudesV | Negative voltage magnitudes v | list of number | Required |
| negativeSweepCurrentMagnitudesMa | Negative sweep current magnitudes ma | list of number | Required |
| callerBreakoverDetectionCurrentMa | Caller breakover detection current ma | number | Required |
Enter two nonnegative increasing voltage-magnitude sweeps and aligned nonnegative strictly increasing currents with at least two points each, plus positive detection current. Both crossings must be bracketed. Interpolate and return directional voltages and signed asymmetry.
asymmetry=positiveThresholdVoltage−negativeThresholdMagnitude Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedPositiveBreakoverV | Observed positive breakover v | number |
| observedNegativeBreakoverMagnitudeV | Observed negative breakover magnitude v | number |
| signedBreakoverAsymmetryV | Signed breakover asymmetry v | number |
{
"input": {
"positiveVoltageSweepV": [
20,
30,
40
],
"positiveSweepCurrentMa": [
0,
1,
9
],
"negativeVoltageMagnitudesV": [
20,
30,
40
],
"negativeSweepCurrentMagnitudesMa": [
0,
1,
5
],
"callerBreakoverDetectionCurrentMa": 5
},
"output": {
"observedPositiveBreakoverV": 35,
"observedNegativeBreakoverMagnitudeV": 40,
"signedBreakoverAsymmetryV": -5
}
}Limitations and assumptions
No universal device knee, default DB 3 rating or test procedure is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Reed Switch Operate Distance Calculator: Reed operate distance can be bracketed on a measured axial-field curve. Lack of a crossing should remain explicitly unknown. For a complementary task, use Latchup Holding Voltage Calculator: A descending latchup sweep can bracket a release threshold between samples. Subsample voltage should not be invented.
References
-
Diacs Breakover Voltage Calculator — tool.io
Similar or alternative tools
- Reed Switch Operate Distance Calculator
Reed operate distance can be bracketed on a measured axial-field curve. Lack of a crossing should remain explicitly unknown.
- Latchup Holding Voltage Calculator
A descending latchup sweep can bracket a release threshold between samples. Subsample voltage should not be invented.