Physics A-Level
Voltage reference
What Voltage reference means in Physics A-Level, as defined for AQA.
Definition of Voltage reference
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Reference: AQA
The steady voltage across a Zener diode in reverse breakdown, against which other parts of a circuit compare their signals or use as a fixed level.
Topics that use Voltage reference
- Zener diode (A-level only) (AQA A-Level)
Related terms
- Cathode
- Circuit application
- Current limiting
- Current limiting and power dissipation
- Forward bias
- Minimum operating current
- Reverse bias
- Reverse breakdown
Using Voltage reference in the exam
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