Transient Overvoltage Clamp
CI
CircuitSim
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Created May 10, 2026
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Updated Jun 30, 2026
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Details
Components
1
Schematic
Yes
Simulation
Transient analysis
Copies
Not copied yet
About this circuit
A Zener clamp limiting a sine overvoltage transient at a protected load node.
Circuit notes
Transient Overvoltage Clamp
Application
Use this circuit as a low-energy input protection example for sensor or ADC pins.
Design Context
A high-amplitude sine source drives the protected node through a resistor while the Zener clamps the load node.
Expected Behavior
The input waveform exceeds the Zener voltage, but the protected node is limited near the clamp level.
Key Values
- VIN is a 10 V, 1 kHz sine source.
- RSRC is 220 ohm.
- DZ1 is 5.1 V.
Suggested Experiments
- Change source amplitude.
- Change RSRC to limit clamp current.
- Change Vz to select a different protection level.
Featured Component
The Zener diode component demonstrates reverse breakdown clamping in a transient protection circuit.
Components used
Components used
1 component
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