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Supply voltage supervisor

Circuit that detects under voltage conditions

Supply voltage supervisor (SVS, or supply voltage supervisory circuit) circuits are used to monitor the supply voltage to embedded and electronic systems for under voltage conditions. If an under voltage condition is detected then the supervisory circuit will reset the controller and keep it in that state as long as the under voltage condition persists. This type of reset is called brown out reset (BOR). In many modern day microcontrollers, brown out reset protection is used to prevent erratic behavior or damage due to unstable supply voltages.

Application

Supply voltage supervisors are used to protect circuitry such as MPUs, DRAM, and other devices that are easily damaged by high voltages or will operate incorrectly at low voltages. They can be specialized ICs, but are often found integrated into a microcontroller on the same chip.

Features and functions that can be included with voltage supervisors are:

Watchdog timer
Battery switch-over (UPS)
Window comparator circuit (window detector)

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

electronic-circuits

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