# Window voltage supervisor

Canonical URL: https://eloragrid.ai/symbols/window-voltage-supervisor
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: V WIN
Drawing use: Schematic
Reference families: Manufacturer

A window supervisor checks whether a monitored voltage stays between its specified lower and upper limits.

## 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.

### 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.

### Terms

- Window: The permitted range between two specified boundaries.
- Hysteresis: Different transition conditions used to avoid repeated switching near a boundary.

Concept diagram: Monitored supply voltage → Lower/upper window check → In-window or fault indication
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

- [Supply supervision and reset](https://www.ti.com/product-category/power-management/supervisor-reset-ics/overview.html)


## What it represents

A window supervisor checks whether a monitored voltage stays between its specified lower and upper limits.
A circuit can indicate both an undervoltage and an overvoltage condition using the selected supervisor.
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. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify the monitored voltage and both limits.
- Define the output’s in-window or fault meaning.
- Reference timing and hysteresis where provided.
- The permitted window and response time must be specified independently of the symbol.

## Information to show or reference

- Identify the monitored voltage and both limits.
- Define the output’s in-window or fault meaning.
- Reference timing and hysteresis where provided.

## Important distinction

The permitted window and response time must be specified independently of the symbol.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Monitored supply voltage
- Concept output: In-window or fault indication

## Public references

- [Supply supervision and reset](https://www.ti.com/product-category/power-management/supervisor-reset-ics/overview.html) — Texas Instruments. Supply supervision and reset: public technical context for the named function. Product and compliance details remain with the publisher.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.