WDT
Watchdog timer
Supervises a qualifying activity signal and operates its output when the documented watchdog timing condition is violated.
Schematic
Symbols · V WIN
Window voltage supervisor
In plain English
What does Window voltage supervisor mean?
A window supervisor checks whether a monitored voltage stays between its specified lower and upper limits.
A simple example
A circuit can indicate both an undervoltage and an overvoltage condition using the selected supervisor.
What the drawings help you do
Show the monitored voltage together with its lower and upper acceptable limits in the documentation. The window function checks both sides of that range. Label whether the output represents an in-window condition or a fault so the meaning is not reversed by an ambiguous signal name.
- Window
- The permitted range between two specified boundaries.
- Hysteresis
- Different transition conditions used to avoid repeated switching near a boundary.
Before using this reference
- Identify the monitored voltage and both limits.
- Define the output’s in-window or fault meaning.
- Reference timing and hysteresis where provided.
How does this differ from a single undervoltage supervisor?
A window supervisor checks a lower and an upper boundary. A single undervoltage function only addresses its specified low-voltage condition. The selected device determines how each result is reported.
Read the source: Supply supervision and reset
Schematic · V WIN
A distinction that matters
The permitted window and response time must be specified independently of the symbol.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Supply supervision and reset
Supply supervision and reset: public technical context for the named function. Product and compliance details remain with the publisher.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
Explore related references
SVS
Supply voltage supervisor
A voltage supervisor checks a supply against specified conditions and produces a status or reset signal.
Schematic
PG
Power-good indication
A power-good signal reports whether the source's specified acceptable-supply conditions are satisfied.
Schematic
PCS
Power converter / inverter
An identified interface converting electrical power between documented circuit forms.
SLD / Schematic
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